477-51-1-15111

TEXAS AGRICULTURAL-EXPERIMENT STATION '

BULLETIN NO. 166. I MAY, 1914

DIVISION OF CHEMISTRY

Digestion Experiments With Texas
Feeding Stuffs

 

POSTOFFICE
College Station, Brazos County, Texas

 

1914

AGRICULTURAL AND MECHANICAL COLLEGE 0F TEXAS

(lirAnLEs Punvraixn, President Pro Tem.

TEXAS AGRICULTURAL EXPERIMENT STATION
BOARD OF DIRECTORS

C. B. (Iusiuxu, President, Houston 

Joim I. GuloN, Vice-President, Bullinger.i.....m.l  I

ti. II. AsTrN, Bryan. 

1...]. IIART, San Antonio .... ..
H. L. BENNETT, Paris ...... .. .
l‘. IS. B.\'I‘TLI<I, Marlin .... ..

J. S. \\'u.1.1x.1us, Paris ...... ..

J. ALLEN KYLE, IIouston ...... ..

XI/Aixrnx PETEET, Waco ........................................... ..

.................................................. .. Term expires 1915

.. Term expires 1919

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..'. Term expires 1919
............................................... .. Term expires 1919

............................... .. Term expires 1917

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. Term expires 1917
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. Term expires 1917
.................................................... ..Term expires 1915
.................................................... ..Term expires 1915

GOVERNING BOARD, STATE SUBSTATIONS

CuAnLEs BouAN, Austin...“ .
V. A. (IQLLINS, Beaumont .... ..

t". L. UowNs, Vice-President, TGIIIDIU ................... ..

STATION STAFF

AIJ-NIINISPRATION
B. YOUNGBLOOD, M. S., Director
A. B. CoNNEn, B. S., Assistant Director
CuAs. A. FELKER, Chief Clerk
A. S. WARE, Secretary

DIVISION OF VETERINARY SCIENCE
M; FnANcxs, D. V. S., Veterinarian in
Charge _
II. Scrmmn‘, I). V. M., Assistant Veter-
inarian

iU-IVISION OF CHEMISTRY
(j. S. FRAPS, P11. D., Chemist in Charge
J. B. IRATEER, M. S., Assistant Chemist
WILLIAM LEVIN, A. B., Assistant Chemist_
J. W. CHEWNING, B. S., Assistant Chemist

IWIVISION OF HORTICULTURE

H. NEss, M. S., Horticulturist in Charge
W. S. HOTCIIKISS, Horticulturist

IEHVISION OF ANIIVIAL HUSBANDRY

J. (l. BURNS, B. S., Animal Husbandman
in Charge

, Animal Husbandman

DIVISION OF ENTOIVIOLOGY
\\'iLMoN NEWELL, M. S., Entomologist in
Charge
I’. B. PADDOCK, B. S. E., Entorrzologist

DIVISION OF AGRONOMY
A. B. CQNNER, B. S., Agronomist in Charge
.-\. II. LEIDIGH, B. S., Agronomist in Charge
of Soil Improvement
H. H. JoesoN, B. S., Assistant Agronomist
ti. \V. IIARRISON, B. S., Assistant Agron-
omist -
DIVISION OF PLANT PATHOLOGY AND
PHYSIOLOGY
F. II. BLOoQETT, P11. D., Plant Pathologist.
and Physiologist U1 Charge
‘DIVISION OF FABIII MANAGEINIENT

REX E. \V_1LI.Anr>. I\’I. S., Farm lvlanageizient
Hrpert in Charge

‘SUBSTATION NO. 3:

................................................... “Term expires 1919
.................................................. .. Term expires 1917
................................................ .. Term expires 191g)

.. .........’I‘erm expires 19

DIVISION OF FEED COPITROL SERVICE

NV. L. BOYETT, Feed Inspector in Charge
J. H. RouEnsFeed Inspector

\V. H. W001), Feed inspector

T. H. VVOLTERS, Feed Inspector

R. B. EHLINGER, Feed Inspector

SUBSTATION NO. 1: Beeviile, Bee County
E. E. BINFORD, B. S., Superintendent

SUBSTATION NO. 2: Troop, Smith County
W. S. Horcnruss, Superintendent
R. W. Cox, B. S., Scientific Assistant

Anglcton, Bruzoria

County
N. E. WINTERS, B. S., Serperintendent
J. W. JACKSON, B. S., Scientific Assistant
*SUBSTATION NO. 4:
County
H. H. LAUDE, B. S., Superintendent

SUBSTATION NO. 5: Temple, Bell County
A. K. SHORT, B. S., Superintendent

Beaumont, Jefferson

SUBSTATION NO. 6: Denton, Denton County
T. \V. BUELL, B. S., Superintendent

SUBSTATION NO. 7: Spur, Dickens County
B. E. DmKs0N,B. S., Superintendent
I

SUBSTATION NO. 8:
County

V. L. CORY, B. S., Superintendent

SUBSTATION NO. 9: Pecos, Reeves County
H. C. STEWART,  S., Superintendent
J. M. TTnomsoN, B. S., Scientific Assistant

SUBSTATION N0. l0:
Substation,
County

Lubbock, Lubbock

Feeding and Breeding
Coilege Station, Brazos

1———~—--—»——, Superintendent
SUBSTATION NO. 11: Nacogdoches, Nacog-
doches County _
G. T. McNEss, Superznteizdent

CLERICAL ASSISTANTS

S’I‘A'I‘ION
J. M. SCHAEDEL, Stenographer

C. A. CAsE, Stcnographer
C. L. DURST, [Malling Clerk

FEED CONTROL
DAISY LEE, Registration Clerk
IVL-VFTIE THOMAS, Stenograplzer
P. K. BROWNLEE, Shipping Clerk '

*In cooperation with Bureau of Plant Industry, United States Department of Agriculture.

TABLE OF CONTENTS._

PAGE
Definition of terms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  . . 5

Digestibility . . . . . . . . . . . .1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. e

Digestible nutrients in the feeds . . . . . . . . . . . . . L . . . . . . . . . . . . . . . . . '7

Productive values of feeds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 7

Method of conducting the experiments . . . . . . . . . . .' . . . . . . . . . . . . . . . 1O

Discussion of results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 11

Alfalfa hay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .' . . . . . . . . . . . . . 12

Bermuda hay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 12

Corn bran . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Cold pressed cotton seed . . . . . . . . . . . . . . . . . . . . . . . . . . .' . . . . . . . 12

Cotton seed hulls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 13

Cotton seed meal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 14

Kafir corn chops . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 16

Kafir head chops . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 16

Rice bran . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 16

Rice polish . . . ‘ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Sorghum and cowpea silage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 16

Sorghum hay . . . . . . . . . . . . . . . . . . . . _ . . . . . . . . . . . . . . . . . . . . . . . 17

Prairie hay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . El 1'7

Tabosa. grass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 17

Tables of composition and digestibility . . . . . . . . . . . . . . . . . . . . . . . .. 18

References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . _ .. 20

Tables of calculations . . . . . . . . . . . . . . . . . . . . . . . . . . . .  . . . . . . . . .. 21

Summary and conclusions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 26

BLANK PAGE IN ORIGINAL

DIGESTION EXPERIMENTS WITH TEXAS FEEDING STUFFS

BY G. S. FRAPS, Prr. D., Chemist.

L?

This bulletin contains the results of digestion tests with the ordi-
nary fodder groups of certain feeding stuffs, Other results have been
published in Bulletin 14:9 of this Station. The Work gives some in-
formation as to the relative values of some Texas feeding stuffs. More
detailed studies conducted in connection with the work here reported
will be presented in later bulletins.

DEFINITION OF TERMS.

The ordinary analyrsis of a feeding stuff gives its content of water,
ash, protein, ether extract, crude fiber and nitrogen-free extract, ex-
pressed in percentages. These terms are explained in the paragraphs
which follow.

Protein, is an important constituent of the food, which, when di-
gested by the animal, is used largely to form flesh, muscle, hair, liga-
ments, and other similar portions of animal body. It is used for the
purpose of replacing the material lost in the wear and tear caused by
life activities, and it furnishes material for the IOTIIhELlIIOII of flesh. as
in growing animals or in fattening animals. It may also be burned
in the body to produce heat, or it may serve for the production of fat,
but it is usually too expensive an ingredient of food to be used for this
purpose to any extent. With a given feed, the more protein it con-
tains, the better its quality compared with other feeds of the same kind.
Protein is estimated by multiplying‘ the nitrogen by 6.25.

Ether ea-tract from concentrated feeding stuffs is composed mostly of
fats and oils, but the ether extract from fodders and hays is composed
to a considerable extent of wax alcohols, coloring matters, and other
substances, as has been shoyvn in Bulletin No. 150 of this Station.

Fat is used in the animal body as a source of body heat, and to
furnish heat and energy. The animal requires heat to keep its body
warm, DMOTG being, of course, required in cold weather than in warm
weather. The animal requires energy to run the animal mechanism
or to do outside work. This heat or energy is furnished by the burn-
ing of food in the body, and the process is analogous to the burning of
coal or wood for the purpose of heating a. house, or for making steam
in a boiler to be used for the production of energy. One pound of
digested fat is equal to 2.25 pounds of carbohydrates. Fat. ranks next
to protein in its value in a feeding stuff. The more protein and fat a
feed contains, the better its quality as compared with other feeds of
the same kind, but (liifcrent feeds cannot be compared in this way.

(lrurle fiber is that part of the plant which is left after it has been
subjected, first to action of boiling one and one-quarter per cent sulphuric
acid and next to boiling‘ one and one-quarter pcr cent sodium

6 Tnxxs AGRICULTURAL EXPERIMENT STATION.

hydroxide. Crude fiber consists mostly of the cell wall and woody
material of the plant, and is the most indigestible part of the feed.
Some animals, such as the hog, have little power of digesting crude
fiber. Animals which chew the cud digest some crude fiber by means
of fermentation in the intestines. The digestion is accomplished by
means of bacteria which live in the digestive organs and not by the di-
gestive "juices. This process consumes so much energy that a large
portion of the value of the crude fiber is lost during the digestion.
The more crude fiber a feed contains, the poorer is its quality compared
with other feeds of the same kind.

Nitrogen-free extract is a group containing a number of substances
of widely differing properties. The nitrogen-free extract of concentrated
feeding stuffs consists very largely of sugars and starches. These sub-
stances are easily digested, and have considerable value to the animal-
The nitrogen-free extract of wheat skins, corn bran, corn cobs, rice
hulls, hays, straws, and similar feeds, is composed mostly of other sub-
stances than sugar and starch, which are not so readily digested, and
have a lower value to the animal after they have been digested, than
the sugars and starches. The nitrogen-free extract of these two groups
of feeds, therefore, cannot be compared directly. The nitrogen-free
extract is composed, to a considerable extent, of carbohydrates. A car-
bohydrate contains hydrogen and oxygen in the proportion to form
water, combined with carbon. The crude fiber of feeding stuffs also
contains carbohydrates. Both the nitrogen-free extract and the crude
fiber contain other substances in addition to the carbohydrates, so that
it is not correct to designate these two groups as carbohydrates.

Ash is the residue left when the plant burns. With the exception
of the nitrogen, the ash contains almost entirely that part of the plant
which comes from the soil, though small portions of ash ingredients
are driven off in the vapors during the comibustion. The ash of plants
is of value to animals. The lime, and also the phosphoric acid is used
for building up bones. Phosphoric acid and sulphur are also essential
constituents of animal cells. The ash constituents are necessary to
animal life. Sometimes feeding stuffs do not contain sufiicient ash,
so that the ration gives rise to disease, or even death, on account of such
deficiency. An excess of ash indicates contamination with dirt, sand,
or other mineral matter.

Water is always contained in feeding stuffs, but this water has no
value to the animal and detracts from the value of the feeding stuffs,
by decreasing the total nutrients in 100 pounds. If the feed contains
an excess of water, it is liable to be injured by mold, or by heating, or
fermentation. In Bulletin No. 152 of this Station, it is shown that
the heating of corn chops, which often occurs in Texas during the
spring, is caused by an excess of water in the corn, The more water
a feeding stuff contains, the less it contains of the nutrients, and the
lower, therefore, in feeding value.

DIGESTIBILITY.

The digested part of a feed is that portion of the different constitu-
ents which disappears while the food is passing through the animal.

DIGESTION EXPERIMENTS “713311 ilhsxas FEEDING STUFFS. '7

A portion of the food which disappears is converted into gases, and
escapes in the form of carbon dioxide and marsh gas. All of the so-
called digested nutrients do not pass through the animal membrane
into the animal proper. The digested nutrients of one feed do not
necessarily have the same value to the animal, pound for pound, as
the digested nutrients of another feed. This fact has been fully estab-
lished by experiments, although not generally recognized. For ex-
ample, a pound of digested nitrogen-free extract from corn has a much
greater value to the animal than a pound of digested nitrogen-free ex-
tract from alfalfa. This matter is discussed in a succeeding paragraph.

The digestibility of a feed, and its content of digestible nutrients, is,
nevertheless, of considerable significance in judging the nutritive value
of a feed. The feeding value can be calculated more or less accurately
from the digested nutrients.

TABLE 1. Average Composition of Feeding Stuff and Composition of Those
Used in the Experiments. "

Labora- _ Nitro-
tory Protein. Ether Crude gen-free Water. Ash.
No. . extract. fiber. extract.

Alfalfa hay, average . . . . . . . . . . . . . . . . . . . . . . . . . . .

6724-5 Alfalfa hay'No. 1 . . . . . . . . . . . . . . . . . , . . . . . . . . . . . . .

7005-6 Alfalfa hay N0. 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Bermuda hay, average . . . . . . . . . . . . . . . . . . . . . . . . . .

6027-8 Bermuda hay . . . . . . . . . . . . .‘ . . . . . . . . . . . . . . . . . . . .

Corn bran, average (Texas) . . . . . . . . . . . . . . . . . . . . .

6907-8 Corn bran . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Cold pressed cotton seed, average . . . . . . . . . . . . . . .

6747-8 Cold pressed cotton seed No. 1 . . . . . . . . . . . . . . . . . .

7034-5 Cold pressed cotton seed No. 2 . . . . . . . . . . . . . . . . . .

Cottonseed meals, meal and hulls . . . . . . . . . . . . . . . .

Cottonseed hulls, average . . . . . . . . . . . . . . . . . . . . . . .

7048-9 Cottonseed hulls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Cottonseed meal, Texas average . . . . . . . . . . . . . . . . .
7050-1 Cottonseed meal, average of 174, July to Jan. 1913. .
Kaffir corn chops, average . . . . . . . . . . . . . . . . . . . . . .

7009-10 Kaffir corn chops . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Kaffir head chops, average . . . . . . . . . . . . . . . . . . . . . .

7031-2 Kaffir head chops . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6064-5 South Texas prairie hay, cut before frost . . . . . . . . .

6123-4 South Texas prairie hay, cut after frost . . . . . . . . . .

Rice bran, average . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6770-1 Rice bran . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Rice polish, average . . . . . . . . . . . . . . . . . . . . . . . . . . .

6879-80 Rice polish . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Sorghunnsflage,average . . . . . . . . . . . . . . . . . . . . . . ..

6998-9 Silage (sorghum and cowpea) . . . . . . . . . . . . . . . . . . .

S0rghun1fodder,average . . . . . . . . . . . . . . . . . . . . . ..

6033-4 Sorghum hay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5912-13 DTabosa grass hay No. 1 . . . . . .' . . . . . . . . . . . . . . . . . .

wmwm H~H
wwmmw~55§Ew»wE:5$$w»wgq@p@@$&&&
""" "' m owwww wmmmwm~@m@
gg£%£g§$a§3£q8mmoww:$omQmmmummm
5-4 Pi?‘ F“!
m'w®Qomwmm~ow@mowmmmwwwwwwwflwww
~§oo~wwmmommmQwoo<wmmwoH#w#wwww
woomm r-Ar-AQJM wm-wwmwl-u-wwwwm
Nwmmma*N°“O©@“@w@@9@?9@995@99@@
""""" o m w waummwomwmmm
Zg$$$$$%$$§$o3m$$~§wwQ~m~w»o<wM
QQ$§$¥QDGFPQP§CJOQQCJO
$$3$55$3$$$fi3$3S$§§-m@@»w@@wwm
....................b.wp®HflwwNw
E8§3§3$$$%$$$§$$$$§3@$Qww~m@~»~
QDQ 0-‘ F-Ill-l 7"‘
amommwqwwomwowwwmmwwqmamwommmuw
""""""bmobmmwuwmm-~wwom~‘
§§G$$$8$£8£$@-Nm@@~<»w~@<<<oo~
5@@m-@moomqww-mmmmmw»mw~mqmmm
"""""&bb'&@§&#&@<m~wQmwwmw
$$§3§3$32$@»@3~mQmwm»mwo~©mw»w©

6288-9 Tabosa grass hay No. 2 . . . . . . . . . . . . . . . . . . . . . . . .

The coefiicienzf of digestibility is the percentage of the particular
nutrient which is digested. If the coefficient of digestibility of the
protein in a. given feed is given at 59.7, this means that of 100 pounds

of the protein in the feed., 59.7 pounds disappear during the passage of .

the food through the animal. Digestibility of the Texas feeds tested,
and the average coefficients of digestibility of these feeds, are given in
Table No. 2-. The averages are taken from the experiments made in
different parts of this country, and detailed in Table No. 6. The Texas
experiments are included in the averages given. Table N0, 1 contains
the composition of the feeds studied. r

8

Texas AGRICULTURAL EXPERIMENT STATION.

TABLE 2. Average Coefficients of Digestibility of Feeding Stufis and Those

Found in the Experiments.

Labora- _ Nitro-
tory Protein. Ether Crude gen-free Ash.
No. extract fiber. extract.
Alfalfa hay, average . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75.29 38.40 46.17 68.83 49.87

6724-5 Alfalfa hay N0. 1 (4) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 77.10 20.31 42.46 72.59 52.01

7005-6 Alfalfa hay No. 2 (4) . . . . . . . . . . . . . . . . . . . . .' . . . . . . . . . . . . . . 73.85 21.81 46.76 71.50 44.40

Bermuda hay, average . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53.10 41.60 53.17 50.63 33.73

6027-8 Bermuda hay (3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44.30 38.20 49.80 49.00 31.50

Corn bran, average . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58.20 76.63 59.56 77 .21 8.48

6907-8 Corn bran (2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71.80 84.38 94.72 86.10 33.92

Cold pressed cotton seed, average . . . . . . . . . . . . . . . . . . . . . . . . 74.28 85.98 39.55 63.23 54.22

6747-8 Cold pressed cotton seed No. 1 (2) . . . . . . . . . . . . . . . . . . . . . . . . 81.73 96.97 50.28 73.68 66.65

7634-5 Cold pressed cotton seed No. 2 (2) . . . . . . . . . . . . . . . . . . . . . . . . 80.21 94.39 45.67 70.88 41.78

Cottonseed meal, rich in hulls . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72.9 90.9 37.3 61.8 . . . . . .

Cottonseed meal and hulls (2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77.69 97.29 51.04 67.91 26.

Cottonseed hulls, average . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14.1 68.4 49.0 47 .7 25.

7048-9 Cottonseed hulls (2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 61.42 61.82 61.77 63.25 84.

Cottonseed meal, average . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85.93 94.84 15.22 71.88 18.

7050-1 Cottonseed meal (2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 85.14 98.84 11.90 71.94 54

Katfir corn chops, average . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56.2 47.2 27.4 68.8 43.

7009-10 Kaflir corn chops (2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81.22 75.58 52.06 92.13 48

7031-2 Kaffir head chops (2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63.41 74.3.5 61.08 80.41 36

6064-5 Prairie hay, cut before frost (3) . . . . . . . . . . . . . . . . . . . . . . . . . . 8.6 39.1 53.5 46.9 4.

6143-4 Prairie hay, cut after frost (3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9.0 57.3 66.7 57.1 28.

Rice bran, average . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64.35 80.85 19.05 81.92 15.

6770-1 Rice bran (2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67.83 88.95 33.73 79.37 28.

Rice polish, average . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67 .3 82.1 25.7 91.1 30.

6879-80 Rice polish (2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69.03 90.60 _ 29.39 89.58 28.

Sorghum silage,average . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9.0 56.0 58.0 64.0 . . . . . .

6998-9 Silage (sorghum and cowpea) (2) . . . . . . . . . . . . . . . . . . . . . . . . . 23.77 57 .93 49.24 63.67 19.82

Sorghum fodder, average . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35.5 62.2 60.6 61.5 . . . . . .

6033-4 Sorghum hay (3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13.9 54.0 55.6 55.9 23.4

5912-13 Tabosa grass hay No. 1 (2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17.0 27.2 52.5 41.8 18.4

6288-9 Tabosa grass hay No. 2 (2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22.9 46.7 56.5 53.1 21.4

The average quant

based

the composition shown in Table
The digestible nutrients
are also given in the tab
ing the feeds, but a bette

DIGESTIBLE NUTRIENTS IN THE FEED.

on the coefficients

contained in the feeds stu
le. This table contains the data for compar-
r method of comparison is given below.

ities of digestible nutrients in the various feeds,
of digestibility given in Table No. 2, and on
No. 1, are presented in Table No. 3..
died in this bulletin

Digestible Constituents of Feeding Stuffs and Average Digestible

TABLE 3.
Constituents.

Labora- _ Nitro-

tory Protein . Ether Crude gen-free Ash.

No. - extract. fiber. extract.

Alfalfa hay, average . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11.04 .32 13.01 24.63 4.18

6724-5 Alfalfa hay No. 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11.14 .32 12.08 28.49 4.51

7005-6 Alfalfa hay No. 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11.04 .31 14.29 27.75 3.66

Bermuda hay, average . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.81 .73 13.24 25.01 2.67

6057-8 Bermuda hay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.90 .55 13.22 24.38 2.66

Corn bran, avqrage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.23 3.77 6.57 48.73 .15

6907-8 Corn bran . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6. 64 4.59 9.77 55.66 .75

Cold pressed cotton seed, average . . . . . . . . . . . . . . . . . . . . . . . . 19.66 6.28 9.72 18.61 2.22

6747-8 Cold pressed cotton seed No. 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . 20.91 9.60 11.82 22. l0 2.81

7034-5 Cold pressed cotton seed No. 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . 22.22 6.73 11.77 20.43 1.57

Cotton-seed meal and hulls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22.92 7.24 12.72 19.64 1.05

Cottonseed hulls, average . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .60 .90 22.18 17.69 2.17

7048-9 Cottonseed hulls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.44 . .51 30.74 21.96 2.11

Cottonseed meal, average . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38.55 8.13 1.35 18.42 1.00

7050-1 Cottonseed meal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37.63 11.16 .97 17.23 3.15

Kaffir corn chops, average . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.09 1.42 .67 48.73 .72

7009-10 Kafiir corn chops . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.97 1.83 1.26 64.99 .76

Kafiir head chops, average. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.36 1.98 4.32 54 .07 1 . 15

caocncoocoi-Ucwxtp-Gov-iwm
o1 woo one weocc N,

DIGESTION EXPERIMENTS WITH TEXAS FEEDING SrUEEs. 9

U

TABLE 3. Digestible Constituents of Feeding Stuffs and Average Digestible
Constituents—continued.

Labora- - Nitro-
tory Protein. Ether Crude gen-free Ash.
No. extract. fiber. extract.

7031-2 Iiafiir head chops . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.07 1.75 4.88 54.23 1.18

6064-5 Prairie hay, cut before frost . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37 .80 15 .66 22.49 .35

6143-4 Prairie hay, cut after frost . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . i .33 1.23 20.14 26.57 2 .48

Rice bran, average . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7.88 9.37 2.25 36.51 1.54

6770-1 Rice bran . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.44 11.99 3.56 36.46 2.74

Rice polish, average . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.22 8.00 .74 55.14 1.52

6879-80 Rice polish . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 8.82 9.45 1.31 51.75 1.90

‘ Silage (sorghum), average . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14 .58 3.57 8. 07 . . . . . .

6998-9 Silage (sorghum) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53 .41 4.20 11.62 .37

Sorghum fodder, average . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.91 -1. 74 17.28 29.99 . . . . . .

6033-4 Sorghum hay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .59 .97 15.67 28.10 1.49

5912 Tabosa grass hay No. 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .63 .31 17.52 19.06 1.72

6288-9 Tabosa grass hay No. 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .81 .57 18.19 24.48 2.28

PRODUGTIVE VALUE OF FEEDS.

The digestion of food requires a certain amount of Work on the part
‘of the animal. The amount of work varies with different feeds. A
part of the work comes from the exertion of energy involved in chew-
ing. This is decreased by grinding feeds, and experiments have shown
that grinding or chopping the feed increases the actual production. A
portion of the energy is lost in other ways in addition to the loss in
chewing. Some of the dififerences in the values of different feeds is
no doubt due to differences in chemical composition of the difierent groups
of nutrients. The feeding stufis which have lower productive values
for their digestible nutrients do not contain the nitrogen-free extract
in the same forms as those which have a high productive value.

The disposition of the productive value of a feeding stuff is as
follows: _

First, a portion is lost in chewing, and by other work of digestion.

Second, a portion is lost by fermentation.

Third, a portion is eliminated in the undigested residues.

' Fourth, a portion is lost as organic materials in the liquid excrement.

Fifth, a portion is probably lost in changing material into forms suit-
able for the purposes of the animal.

Sixth, the remainder of the food is available for the uses of the

animal. It must first be used for the purpose of preserving the life

of the animal, performing the bodily functions, such as the beating of
the heart, movements of the lungs, etc., and keeping the animal warm.
The feed must do all of this before any portion of it can be used for
purposes that are useful to man.

Seventh, after all of the above uses are served, if there remains a
portion of the value of the food, it may be used for productive pur-
poses; that is to say, if the animal is a working animal, the remainder
of the digested food may be used for the production of work. If the
animal is a growing animal, it may be used for the production of flesh
or fat. If the animal is giving milk, it may be used for the formation

of milk. If the animal is fattening, it may be used for the production

of fat, and of the small quantity of flesh which accompanies the fat
Formation.

10 TEXAS AGRICULTURAL EXPERIMENT STATION.

But before the food may be used for Work, or milk, or flesh, or fat,
the bodily functions of the animal must be taken care of, and this and
the losses involved in digestion take up a very large percentage of the
food fed. The proportion taken up by the non-productive functions
depends upon the size of the ration, up to the limit of the ability of
the animal to digest and care for the food. The greater the ration, the
greater is the portion Which may be used for productive purposes.
Thus, on a light fattening ration, an animal may use only one-tenth
of the total food fed for productive purposes; but, on a heavy fattening
ration, the animal may use as much as one-fourth. The quantity of
food required to produce a given gain in Weight Will, therefore, de-'
pend to a considerable extent upon the size of the fattening ration.
Tl"; same applies to other productive purposes, so that, in order to
secure the most value from the food fed, it is necessary to feed a
heavy ration. This matter Will not be discussed in detail in the present
bulletin.

The productive value of the different feeding stuffs is presented in
Table No. 4. The calculations Were made according to the method
described in Fraps’ Principles of Agricultural Chemistry, page 425.
The factor used for corn bran is 0.77. Rice polish, cotton seed meal,
rice bran and kafir corn, Were given full values. Since the total crude
fiber in kafir head chops, in cold pressed cotton seed, in cotton seed
meal in excess of 5 per cent, and in rice bran in excess of 6 per cent
comes from hay-like material, this crude fiber Was multiplied by 0.14
and deducted. The total crude fiber in the havs and the cotton seed
hulls Was multiplied by 0.14 and deducted. The total crude fiber7in
sorghum silage, and sorghum and coWpea. silage, Was multiplied by
0.085 and deducted. These calculations place the silage on a parity
With grass or green feeds.

These figures-represent the productive values of these feeds accord-
ing to our best present knowledge. Further advances may modify some
of these conclusions.

The productive value of a feed is defined as the pounds of fat pro-
duced by 100 pounds of feed, When it is fed in addition to a ration
sufficient to maintain the animal. - I

It is difficult to combine protein value and productive value into a
single figure, as the value of protein is somewhat variable. We have
made this combination in the table on the assumption that the flesh-
forming value of protein is equal to its productive value. As the pro-
ductive value of the protein has been considered in estimating the pro-
ductive value of the entire feed, We simply add the fat value of the
protein again to secure a figure assumed to represent the total pro-
ductive value of the feed. Results are in Table No. 4.

METHOD OF CONDUCTING THE EXPERIMENTS.

The digestion experiments With the concentrates Were carried out
With several periods of twelve days each. In the first and last periods,
the roughage Was fed, consisting of alfalfa hay. In the other periods,
the roughage and concentrates to be tested Were fed, using 300 grams
of hay to 300 grams of concentrates per day. The rat-ion to be tested

DIGESTION EXPERIMENTS WITH TEXAS FEEDING STUEEs. 11

was fed twelve days, and the excrement collected during the last six
days. Enough hay was "WQIglIGCl out at the beginning of the experi-
ment, in paper bags, to last during the entire experiment. Each feed
was weighed out separately. Enough of the concentrate was Weighed
out at the beginning of the digestion period in which it is to be used,
to last the entire period.

In the digestion experiment with silage, the preliminary period was
six days, and the collecting period six days. The silage was brought
to thelaboratory daily, in the morning; mixed well in an iron tray,
and four rations of 750 grams each Weighed out for the two sheep; 500
grams were also weighed out and dried in the drying oven. At the
end of the preliminary period, the samjples taken during this period
were combined, and constitute sample No. 1. The samples taken dur-
ing the collecting period were combined. and constitute sample No. 2.
In other respects, this work was carried on as with the experiment on
roughage.

TABLE 4. Digestible Crude Protein and Productive Value of Feed Studied,
Pounds per Hundred Pounds Feed.

Labora- _ Produc- Relative
tory Protein, tive value.
N0. lbs. value.

v

Alfalfa hay, average . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6724-5 Alfalfa hay No. 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7005-6 Alfalfa hay No. 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Bermuda hay, average . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6057-8 Bermuda hay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Corn bran, average . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6907-8 Corn bran . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . '. . . . . . . . . . . . . . . . . . . . -

Cold pressed cotton seed, average . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . l

6747-8 Cold pressed cotton seed No. I . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7034-5 Cold pressed cotton seed No. 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Cottonseed hulls, average . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7048-9 Cottonseed hulls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

_ Cottonseed meal, average 1913 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7050-1 Cottonseed meal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Cottonseed meal and hulls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Kaffir corn chops, average . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7009-10 Kafiir corn chops . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .'. . . . .

Kafiir head chops, average . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7031-2 Kaflir head chops . . . . . - . . . . . . . . . . - . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6064-5 Prairie hay, cut before frost . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6143-4 Prairie hay, cut after frost
Rice bran, average . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6770-1 Rice bran . . . . . . . . . . . . .' . . . . . . . . . . ' . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Rice polish, average . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6879-80 Rice polish . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..

rghum silage, average . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..

6998-9 Silage (sorghum and cowpea) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Sorghum fodder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6033-4 Sorghum hay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5912 T abosa grass hay No. 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6288-9 Tabosa grass hay No. 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

FiPi
Pili
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mwwmqmmomo©oa@mmmQwwomwmummomm<

The methods used for roughage are the same as those described in
Bulletin No. 14'?’ of this Station.

DESCRIPTION -OF THE FEEDS AND DISCUSSION OF THE RESULTS.

The composition of the feeds used and the average composition of
the feeds are shown in Table No. 1. Coefficients of digestibility are
given in Table No. 2. The digestible nutrients are give in Table N o-
3, and Table No. 4 shows the digestible crude protein and the pro-

12 Texas AGRICULTURAL EXPERIMENT STATION.

ductive value as caculated from the best data available. A discussion
of the individual feeding stuffs is given below.

ALFALFA HAY.

The digestibility of two samples of alfalfa. hay was determined in
connection with the estimation of the digestibility of the concentrates.
The alfalfa hay was used merely as a medium with which to feed the
concentrates. Four digestion experiments were made with each sam-
ple. The alfalfa hay seemed to be of fair quality, and, with the excep-
tion 0f ether extract, its digestibility was close as could be expected, to
the average coefficients of digestibility.

BERMUDA HAY.

The Bermuda hay was purchased from a local dealer, and repre-
sents the hay as placed on the market. It contained a small quantity
of foreign grasses, which were removed as much as possible. It is
apparently below the average Bermuda hay in protein, but the writer is
inclined to believe that the average is a little high for the market hay.
The sample examined had a considerable lower digestibility for pro-
tein than the average of those previously reported. Bermuda hay is
poor in digestible protein, but has a fairly high productive value as

‘compared with some of the other hays.

CORN BRAN.

Corn bran is a product which is very variable in composition. This
appears to depend upon the quantity of the germ which comes in with
the bran, and also on the amount of the starchy material which goes
along with the outer skin of the bran, which is the corn bran proper.
The sample examined was a little above the average in protein and fat.
Its digestibility was determined in connection with alfalfa hay. The
protein of this particular corn bran was digested to a much greater
extent than the protein in corn bran previously reported by other
stations. Theother constituents of the corn bran were also more
highly digested, especially the crude fiber and the nitrogen-free extract.
In view of these facts, it appears that it would be desirable to make

- further determinations of the digestibility of this product. The di-

gestible protein and the productive value of the corn bran compares
favorably with that of some of the other concentrated feeding stuffs.
Corn bran in general seems to be a much richer feeding stuff than has
been generally supposed and is by no means to be placed in the same
class with peanut hulls and rice chaff.

COLD-PRESSED COTTON SEED

Cold-pressed cotton seed is a product obtained by compressing the
entire seed of the cotton for the extraction of oil, after they have been
cleaned and delinted. The word “cold-pressed” is not strictly true,
since the seed become very hot while passing through the rolls.

Digestion experiments were made with two different samples of
cold-pressed cotton seed, and also with a mixture of cotton seed meal
and hulls. The object of the latter test was to ascertain whether the

DIGESTION EXPERIMENTS WITH TnxAs FEEDING sifinirs. l3

cold-pressed cotton seed has a digestibility different from that of a
mixture of meal and hulls of approximately the same protein content.

The samples of cold-pressed cake were near the average in compo-
sition, excepting that sample No. 1 contained considerably more fat
than the‘ average. Twelve German digestion experiments have been
found in the literature. The crude fiber and the nitrogen-free extract
of cotton seed hulls were digested to a much greater extent in this
digestion experiment than, on an average, in the experiments previously
reported. The digestibility of the mixture of cotton seed meal and
hulls, corresponding to the cold-pressed feed, is very similar to the
cold-pressed product. We have no reason to believe, therefore, that
the cold-pressed product is any better digested than a mixture of meal
and hulls of the same composition. The hulls in this mixture, how-
ever, were digested to a much greater extent than in previous experi-
ments. The cold-pressed cotton seed, therefore, has a higher value
than has heretofore been assigned to it. .

The cold-pressed seed may be looked at from the point of. view of fl
mixture of cottonseed meal and hulls. The relative proportions of
cottonseed meal and hulls may be calculated from the percentage of

protein present, with some degree of accuracy, but will depend upon

the grade of meal for which the calculation is made.

If the calculations are based upon a protein content of 47.65 per
cent in the meal (average Texas meal of 1907), the cold-pressed cot-
ton seed would be composed of 48.6 per cent meal and 51.4 per cent
hulls. The calculated composition of this mixture, compared with the
average cold-pressed cotton seed, is as follows:

48.6 meal Cold-pressed
and 51.4 hulls. cotton seed.
Protein . . . . . . . . . . . . . . . . . . .. 26.48 26.47

Ether extract . . . . . . . . . . . . .. 5.72 7.31

Crude fiber . . . . . . . . . . . . . . . 25.33 24.58

Nitrogen-free extract . . . . . . . 30.25 29.43

Water . . . . . . . . . . . . . . . . . . .. 8.02 8.11

Ash . . . . . . . . . . . . . . . . . . . . .. 4.20 4.10

The cold-pressed cotton seed, therefore, contains more ether extract
(or fat) than would be present in a mixture of meal and hulls of the
same protein content. According to statistics, 713 pounds meal and
975 pounds hulls are secured from a ton of seed. These figures are in
the proportion of 42.2 per cent meal to 57.8 per cent hulls; if in this
porportion, the meal must contain 57.5 per cent protein to give the
protein content of the cold-pressed. cotton seed.

COTTON SEED HULLS.

The cotton seed. hulls were fed in connection with cotton seed meal
and alfalfa hay, as mentioned above. The ether extract of the hulls
used was lower than the average of previous analyses. but the analvsis
is probably nearer the composition of the hulls actually on the market
now than the average analysis given. Cotton seed hulls now on the
market contain less meats than was formerly the case. and also ‘a

14 Texas AGRICULTURAL EXPERIMENT STATION.

smaller quantity of absorbed oil, so that the average analysis usually
given for ether extract is now too high.

The digestion ‘experiments With the hulls give considerable higher
results than the average coefiicients of digestibility secured in experi-
ments previously reported. (See Table No. 3.) The protein has a

negative digestibility; that is, feeding the hulls decreased the digesti-

bility of the protein of the other feeds With Which it is fed. Similar
results Were secured by other Workers. The average coefficients of di-
gestibility of cotton seed hulls are increased by the experiments re-
ported in this bulletin. It seems probable that cotton seed hulls con-
tain much more digestible material than has been supposed from previous
experiments, and, therefore, the hulls have a higher feeding value. The
productive value of cot-ton seed hulls, calculated from the experiment
reported in this bulletin, is nearly '75 per cent greater than the pro-
ductive value calculated from the average co-efficients of digestibility,
and the latter 1's also somewhat higher than has previously been cal-
culated to ‘be the case, since the digestion experimenthere- reported has
been included in the average. Further studies of the digestibility of
cotton seed hulls are desirable.

COTTON SEED MEAL.

Cotton seed meal consists of the residue left after the extraction of
the oil from the kernels, together With such small quantities of hulls
as are necessary to the proper extraction of the oil. ’l‘he composition
of cotton seed meal varies according to the composition of the kernel
in the original seed, and according to the quantity of hulls which may
be present in the meal. The estimation of the crude fiber affords a
means of judging the quantity of hulls present. The kernels contain
only a small quantity of crude fiber, While the hulls, as shoWn in the
table of analyses, contain, on an average, about 45 per cent crude fiber.
The quantity of crude fiber Which is naturally present in the kernels
cannot, at present, be definitely stated, but apparently should be less than
5 per cent. If We assume that the kernels should contain 5 per cent fiber
after the oil is removed and that the hulls contain 45 per cent crude
fiber, the calculation of the quantity of hulls present, according to a
given fiber content, is a simple matter.

t Let x be the quantity of hulls in the meal; then 100—-x is the quan-
tity of meal from pure kernels in 100 pounds. —

Let b equalthe percentage of crude fiber. '

Then x multiplied by .45: the fiber from the hulls :O.45x.-

(100-—-X) ‘multiplied lay .05 is equal to the fiber from the pure meal;
that is (100-—x) .05:5-—.05x.

Then .45x-1,-5—.05x: crude fiber in the mixturezb.

x::b—5. According to this calculation, to estimate approximately

.4
the quantity of cotton seed hulls in a cotton seed meal on a basis of 5
per cent for the kernel, subtract 5 from the quantity of crude fiber
present in the meal and divide by 0.4. For example, suppose a cotton
seed meal co-ntains 9 per cent crude fiber; 9-—5:4.

4—I—0.4:10. Thus, a cottonseed meal With 9 per cent crude fiber

‘\_

DIGESTION EXPERIMENTS WITH TEXAS FEEDING STUFFS. 15

will contain approximately 10 pounds of cotton seed hulls and 90
pounds of meal from pure kernels. This estimation is only approxi-
mate, for two reasonsz- First, that the 5 per cent basis for the kernel
is not exactly correct, but is much too high. Second, the hulls contained-
in the meal are not the same as the hulls containing the 45 per cent
crude fiber, but really consists of hull bran. Hull bran is the Woody
part of the hulls, Without the lint. Cotton seed hulls as removed from
the seed carry some lint, which is high in crude fiber, While the hull
proper contains a lower percentage. ‘Since the hull bra-n contains less
than 45 per cent crude fiber, calculations based on this percentage will
be low. '

Table A shows the average composition of samples of cotton seed
meal collected by the Texas State Feed Inspectors between the dates
given, and the percentages of hulls calculated to be present.

The effect of" cotton seed hulls upon the nutritive value of cotton
seed meal may be calculated in a very simple manner. If one pound
of cotton seed meal, containing 0.4095 pounds digestible protein, is re-
placed by 1 pound cotton seed hulls, containing .006 pounds digestible
protein, then the net loss is 0.4035 pounds digestible protein for each
pounds of hulls added. If 1 pound of cotton seed meal having a pro-
ductive value of 0.1948 is replaced by 1 pound cotton seed hulls, hav-
ing a productive value of .0408, the result is a net loss of 0.154 pounds
of productive value. It is known that the digestibility of cotton seed

meal to- which hulls have been added is less than that of the high-grade
meal.

TABLE A. Average Composition of Texas Cottonseed Meal Samples Col-
lected by Feed Inspectors.

‘ Nitro- Hulls,
Protein. Ether Crude gen-free Water. Ash. No. per
extract. fiber. extract. , samples. cent.
July 1, 1907—Jan. 1, 1908 . . . . . . . . . . . 47.65 9.73 6.50 23.79 6.62 5.76 266 3.75

Jan 1, 1908——July 1, 1908 . . . . . . . . . .. 44.88 8.94 6.91 23.91 6.86 5.61 158 4.77

July 1, 1908—Jan. 1, 1909 . . . . . . . . . .. 47.42 " 8.99 6.78 25.21 6.05 5.71 159 4.45

Jan 1, 1909-July 1, 1909 . . . . . . . . . . . 44.86 9.09 7.65 26.31 6.24 5.81 98 6.62

July 1, 1909-Jan 1, 1910 . . . . . . . . . .. 47.41 9.13 7.66 23.49 6.90 5.53 212 6.65

Jan 1, 1910——July 1, 1910 . . . . . . . . . .. 45.75 8.91 7.85 24.97 7.09 5.25 74 7.10

July 1, 1910——Jan. 1, 1911 . . . . . . . . . .. 46.54 8.98 7.66 25.07 6.49 5.26 223 6.65

Jan 1,1911—July1,1911 . . . . . . . . . .. 45.55 8.87 8.11 25.10 6.97 5.28 112 7.78

July 1, 1911-Jan. 1, 1912 . . . . . . . . . .. 46.59 8.79 7.78 24.52 6.76 5.48 184 6.95

Jan 1, 1912—-July 1, 1912 . . . . . . . . . .. 45.21 8.33 8.79 24.72 7.42 7.42 163 9.48

July 1, 1912-Jan. 1, 1913 . . . . . . . . . . . 44.87 8.57 8.91 25.63 6.66 5.35 174 9.98

Jan. 1, 1913»—July 1, 1913 . . . . . . . . . . . 44.79 8.37 9.22 25.07 7.15 5.34 189 ‘ 10.55

The question has sometimes been asked us, what is the effect of the
crude fiber upon the value of cotton seed meal. If protein, fat, water
and ash remain constant, the increase in crude fiber means a decrease
in nitrogen-free extract. Of 1 pound nitrogen-free extract in cotton
seed meal, 0.719 pounds are digested; of 1 pound crude fiber, 0.152.

The substitution of 1 pound crude fiber per hundred thus involves a .

loss of digestible nutriment equal to 0.567 pounds. This would have
a productive value of 0.142 pounds. But for each per cent of crude
fiber above 5, there is a loss of 0.14 pounds in productive value. The
total loss is thus 0.282 in productive value. Since the productive value

16 TEXAS AGRICULTURAL EXPERIMENT STATION.

of 100 pounds of cotton seed meal is about 18, the loss is about 1.6
per cent of the productive value for each per cent crude fiber. This
calculation is perhaps a little high, since the crude fiber in cotton seed
hulls are digested more than the factor used above for crude fiber in
meal. If it be assumed that the crude fiber is digested to the same
l13;-'5"3+14=.1s5,
or about 1 per cent of the total productive value. On this basis, 1
per cent increase in crude fiber means 1 per cent loss in productive
value. The true loss is probably between these two figures. The average
would be a loss of 1.3 per cent of the productive value of each 1 per
cent excess of crude fiber. '

extent as in hulls (.49), the net loss would be

KAFIR CORN OHOPS.

Kafir corn chops consist of the grain of the kafir corn chopped up.
The sample used is a little better than the average in protein and fat.
The coeffieients of digestibility are considerably higher than the aver-
age coefficients previously secured by other Workers. Further studies
of the digestibility of this Product a1'e desirable.

KAFIR HEAD CHOPS.

The kafir head chops consist of the entire grain of kafir corn, to-
gether with stalk or woody material of the head, chopped up together.
The sample used is somewhat higher in crude fiber and a little lower
in protein and fat than the average of a large number of analyses 0f
kafir head chops made at this Experiment Station. We have found
no record of any other digestion experiment with this material. The
digestibility of the kafir head chops is considered above the average
of the estimations of. the digestibility of kafir head chops previously re-
ported, although it is lower than the coefficient of digestibility for the
kafir corn chops secured in our experiments.

RICE BRAN.

The sample of rice bran is somewhat better than the average in pro-
tein, and in crude fiber. The eoefficients of digestibility secured are
near the average, although somewhat better for fat. The sample ex-
amined has a higher productive value than the average, on account of
the higher quantity of fat contained in it.

RICE POLISH.

The rice polish is near the average in protein and fat, but contains
larger amounts of crude fiber than the average. The coefiicients of
digestibility are near the average with the exception of the fat, which
is somewhat better than the average. The digestibility of the cotton
seed meal in the experiments reported in this bulletin is very close to
the average results previously reported by other workers. excepting that
the ether extract is digested somewhat better.

DIGESTION EXPERIMENTS WITH TEXAS Itnnnrrve STUFrs. 17

SORGHUL/I AND COWPEA SILAGE.

The silage consisted of sorghum silage with approximately 10 per
cent cowpeas. It contained more protein and considerably less water
than average sorghum silage. Sorghum silage seems to vary consider-
ably in composition, especially in its content of nitrogen-free extract.
With the exceptionbf the protein, the coeflicients of digestibility
secured with the sorghum and cowpea silage are near those already
reported for sorghum silage. The protein is digested to a much greater
extent, although the digestibility is still very low.. The result of this
is, that the sorghum and cowpea silage contains a considerably higher
percentage of digestible protein and a considerably higher productive
value than average sorghum silage. The high productive value is due
to some extent to the smaller quantity of Water contained in this par-
ticular sample.

SORGHUM HAY.

The sorghum hay had about the average composition. The coeffi-
cients of digestibility are lower than the average for sorghum fodder;
especially is this true of the protein.

PRAIRIE HAY.

The samples of prairie hay were sent by Mr. J. W. Carson, Superin-
tendent of the Harris County Experiment Farm at Houston, and con-
sists of hay of Harris county, cut before frost and cut after frost. The
object of these experiments was to ascertain whether any appreciable
difference shows between these two kinds of hay in their digestibility.
The hay cut before frost was of good quality and free from dirt; the
hay cut after frost contained a large quantity of weeds, which were re-
moved as much as possible before the hay was prepared for the purpose
of the digestion experiment. There was little difference in the com-
position, but the sample of hay cut after frost was more digestible than
the other, and has a. higher feeding value.

TABOSA GRASS HAY.

Sample No. 1 ca.me from Valentine, Jeff Davis county.

Sample No. 2 was examined by Professor Ness, Horticulturist of the
Experiment Station; and identified as Tabosa grass or black bunch
grass, Hilaria J amesii, containing a very small amount of wire grass.

This is a different lot of hay from No. 1. The second sample was
digested to a large extent, and has a higher feeding value than the first.

ACKNOWLEDGEMENT.

Analytical and other work involved in the preparation of this bulle-
tin was taken part in by assistants, J. B. Rather, S. E. Asburv, L. C.
Ludlum, J. C. Kelly, T. L. Ogier, William Levin, H. B. Spaulding,
J. Cohen, and possibly others. Special mention should be made of the
services of Mr. J. B. Rather.

 

18 TEXAS AGRICULTURAL EXPERIMENT STATION.
TABLE 5. Composition of Feeds Compiled.

Labora - Nitro- ' Refer-
tory Protein. Ether Crude gen~free Water. Ash. ence
N0. extract. fiber. extract. No.

Alfalfa hay, average (34) . . . . . . . . . . .. 14.42 1.97 29.98 35.81 9.61 8.41 1

Alfalfa meal, average (52) . . . . . . . . . . . 14.81 1.90 27.54 38.48 8.80 8.38 2

Average 86 . . . . . . . . . . . . . . . . . . .. 14.66 1.93 28.42 37.35 9.12 8.39

Bermuda hay . . . . . . . . . . . . . . . . . . . . .. 8.75 2.19 21.65 48.81 10.00 8.60 3

Bermuda hay . . . . . . . . . . . . . . . . . . . . .. 9.16 1.83 20.16 46.06 14.30 8.49 4

Bermuda hay . . . . . . . . . . . . . . . . . . . . . . 8.75 2.90 21.64 48.46 10.36 8.60 4

Bermuda hay . . . . . . . . . . . . . . . . . . . . .. 10.75 2.19 25.02 50.71 7.14 3.46 4

Bermuda hay . . . . . . . . . . . . . . . . . . . . . . 6.43 1.60 27.62 46.70 9.74 7.88 1

Bermuda hay . . . . . . . . . . . . . . . . . . . . .. 5.54 1.44 26.54 49.75 8.27 8.46 5

4334 Bermuda hay . . . . . . . . . . . . . . . . . . . . . . 6.34 1.44 26.82 49.63 7.14 8.63 15~

4368 Bermuda hay . . . . . . . . . . . . . . . . . . . . . . 6.65 1.64 23.46 53.36 7.95 6.93 15

5723 Bermuda hay . . . . . . . . . . . . . . . . . . . . .. 5.75 1.36 27.44 50.83 6.56 8.06 15

6021 Bermuda hay . . . . . . . . . . . . . . . . . . . . .. 5.73 1.39 25.86 50.21 7.96 8.85 15.

888 Bermuda hay . . . . . . . . . . . . . . . . . . . . .. 5.06 1.22 27.65 48.75 8.18 9.14 15

Average (11) . . . . . . . . . . . . . . . . . .. 7.17 1.75 24.90 49.39 8.87 7.92

Corn bran, average (38) . . . . . . . . . . . . . 8.98 4.92 11.03 63.11 10.17 1.79 2‘
Cold pressed cottonseed cake, average \

(73).... . . . . . . . . . . . . . . . . . . . . .. 26.47 7.31 24.58 29.53 8.11 4.10 2'
Cottonseed meai (265) . . . . . . . . . . . . . . 47.90 9.40 8.18 24.55 6.93 5.48 16
Cottonseed hulls . . . . . . . . . . . . . . . . . . . 4.60 2.08 38.89 40.19 11.30 2.93 6.
Cottonseed hulls . . . . . . . . . . . . . . . . . . . 3.76 1.54 42.83 41.75 7.25 2.88 7
Cottonseed hulls, average of 7. . .. . . . . 4.87 2.07 38.00 44.11 8.03 2.92 8
Cottonseed hulls, average of 24. . . . . . . 4.36 2.22 43.28 36.88 10.53 2.73 8
Cottonseed hulls, average of 4_ _ _ _ _ _ _ _ 4.04 2.02 44.42 36.52 10.41 2.59 8
Cottonseed hulls . . . . . . . . . . . . . . . . . . . 3.56 0.75 51.40 32.03 9.96 2.30 9

Cottonseed hulls. . . . . . . . . . . . . . . . . . . 4.37 2.20 42.01 39.28 9.28 2.86 10-

Cottonseed hulls . . . . . . . . . . . . . . . . . . . 3.76 1.64 42.80 41.06 8.15 2.58 11

Cottonseed hulls . . . . . . . . . . . . . . . . . . . 4.18 2.01 46.61 32.91 11.80 2.59 12

Cottonseed hulls . . . . . . . . . . . . . . . . . . . 5.30 2.40 39.70 39.00 11.00 2.60 13'

Cottonseed hulls . . . . . . . . . . . . . . . . . . . 4.22 2. 74 43 .48 35.56 12.35 1.65 14

867 Cottonseed hulls . . . . . . . . . . . . . . . . . . . 4.70 0.94 48.91 33.60 8.52 3.33 15

3228 Cottonseed hulls . . . . . . . . . . . . . . . . . . . 4.66 1.60 44.15 36.50 10. 60 2.49 15.

3665 Cottonseed hulls . . . . . . . . . . . . . . . . . .. 4.56 1.80 46.76 35.22 9.21 2.45 15.. .

4360 Cottonseed hulls . . . . . . . . . . . . . . . . . . . 3.20 0.52 47.24 35.91 10.81 2.32 15

6016 Cottonseed hulls . . . . . . . . . . . . . . . . . . . 3.28 0.73 46.22 37.21 10.23 2.33 15

6152 Cottonseed hulls . . . . . . . . . . . . . . . . . . . 4.81 1.13 43.00 38.33 10.15 2.58 15

6153 Cottonseed hulls . . . . . . . . . . . . . . . . . . . 4.50 1.68 45.65 37.49 8.24 2.44 15.

6876 Cottonseed hulls . . . . . . . . . . . . . . . . . . . 2.63 1.12 48.96 36.50 8.59 2.20 15

6947 Cottonseed hulls . . . . . . . . . . . . . . . . . . . 3.35 0.77 47. 68 37.48 8.30 2.42 15

6984 Cottonseed hulls . . . . . . . . . . . . . .- . . . . . 4.02 0. 73 45.32 38.53 8.78 2.62 15

7048 Cottonseed hulls . . . . . . . . . . . . . . . . . . . 3.93 0.85 50.49 33.99 8.28 2.46 15

7049 Cottonseed hulls . . . . . . . . . . . . . . . . . . . 4.00 0.79 49.03 35.45 8.22 2.51 15»

Cottonseed hulls . . . . . . . . . . . . . . . . . . . 3.97 0.82 49.76 34.72 8.25 2.49 5

Average (24) . . . . . . . . . . . . . .. 4 11 1.46 45.27 37.09 9.51 2.56

Kafiir corn chops (156) . . . . . . . . . . . . . . 10.84 3.00 2.46 70.88 11.22 1.65 2

Kaflir head chops, average of 29 . . . . . . 10.03 2.67 7.07 67.07 9.82 3.17 2‘

Rice bran, average of 158 . . . . . . . . . . .. 12. 7 11.59 11.82 44.73 10.10 9.66 2

Rice polish, average of 97 . . . . . . . . . . . 12.22 9.74 2.89 60.38 9.55 5.07 2

Sorghum silage . . . . . . . . . . . . . . . . . . . . . 2.21 1.08 6.47 15.87 72.91 1.46 17

Sorghum silage, average of 3 . . . . . . . . . 1.05 1.26 5.97 9.04 81.09 . 0.99 18

Sorghum silage, average of 3 . . . . . . . . . 1.35 0.99 6.67 16.54 72.57 1.37 18

Sorghum silage . . . . . . . . . . . . . . . . . . . .. 1.49 1.18 5.75 15.79 74.37 1.13 18.

Sorghum silage . . . . . . . . . . . . . . . . . . . . . 1.99 0.89 7.07 9.40 79.30 1.35 19

Sorghum silage . . . . . . . . . . . . . . . . . . . . . 1.76 1.07 5. 69 11.07 78.89 1.52 19

Sorghum silage . . . . . . . . . . . . . . . . . . . . . 1.34 0.78 5.48 9.09 81.94 1.37 20

Average (7) . . . . . . . . . . . . . . .. 1.60 1.03 6.16 12.40 77.29 1.31

Sorghum fodder . . . . . . . . . . . . . . . . . . . . 5.80 1.55 23.26 55.47 5.75 8.17 21

Sorghum fodder . . . . . . . . . . . . . . . . . . .. 7.81 2.05 33.15 44.84 7.15 5.00 22

Sorghum fodder . . . . . . . . . . . . . . . . . . . . 3.69 5.47 27.76 49.64 10.02 3.42 23

Sorghum fodder . . . . . . . . . . . . . . . . . . . . 5.20 4.27 30. 68 45.16 10.49 4.17 23

Sorghum fodder . . . . . . . . . . . . . . . . . . . . 5.58 1.66 28.07 47.24 10.56 6.91 1

This bulletin . . . . . . . . . . . . . . . . . . . . . . . 4.23 1.79 28.19 50.27 9.17 6.35 5

Average (6) . . . . . . . . . . . . . . . . . . . . 5.38 2.80 28.52 48.77 8.86 5.67

Mixture, meal and hulls . . . . . . . . . . . . . 29.18 7.38 23.67 27. 96 7.27 4.54

DIGESTION EXEERIMENTs WITH TEXAS FEEDING STUEEs. 19

TABLE 6. Digestibility of Feeding Stuffs as Reported by various Experiment

Stations.
_ NitrO- Refer-
Proteln. Ether Crude gen-free Ash. ence
extract. fiber. extract. N0,
Alfalfa hay, average of 16 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75.27 40.57 46.37 68.43 50.08 1

Alfalfa hay No. 1, this bulletin . . . . . . . . . . . . . . . . . . . . . . . . . 77.10 20.31 42.46 72.59 52 . 00 5

Alfalfa hay No. 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73.85 21.81 46.76 71.50 44.40 5

Average (18) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75.29 38.40 46.17 68.83 49 87

Bermuda hay, average of 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . 57.50 43.30 54.86 51.45 34.84 1

Bermuda hay, this bulletin . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44.3 38 . 2 49.8 49 . 0 31.5 5

Average (3) . . . . . . . . . . . . . . . . . . . . . . . . . . . ..: . . . . . . .. 53.10 41.60 53.17 50.63 33.73

Corn bran . . . . . . . . . . . . . . . . . .- . . . . . . . . . . . . . . .- . . . . . . . . .. 52.24 67.17 25.75 68.19 . . . . . . .. 25

Cornbran . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  . . . . . . . . . .. 53.4 72.3 53.1 79.6 . . . . . . .. a 26

Corn bran . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55.35 82.71 64.66 74.94 . . . . . . . . 27

Corn bran, this bulletin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71.8 84.38‘ 94.72 86.10 33.9 5

Average (4) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 58.20 76.63 59.56 77.21 8.48
Kaffir corn ........................................ .. 43.6 44.8 45.7 40.8 63.9 29
Kaflir corn . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 40.2 38.8 35.2 38.0 65.7 29

Kaffir corn meal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53.3 46.1 . . . . . . . . 75.9 . . . . . . . . 29

Kafiir corn meal . . . . . . . . . . . . . . . . . . . . . . . . . .1 . . . . . . . . . . . . 54.8 . . . . . . . . . . . . . . . . 80.3 18.3 30

Kaffir corn chops . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 63.9 78.1 31.6 85.4 63.9 31

Kaffir corn chops, this bulletin . . . . . . . . . . . . . . . . . . . . . . . . . 81.2 75.6 52.0 92.1 48.6 5

Average (6) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 56.2 47.2 27.4 68.8 43.4

Cottonseed hulls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12.3 87.1 45.2 37.4 20.9 37

Cottonseed hulls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.2 89.3 47.3 45.7 21.5 37

Cottonseed hulls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.7 78 .1 52.1 30.4 20.6 38

Cottonseed hulls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46.5 51.2 28.2 39

Cottonseed hulls. . .- . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72.8 47.1 48.4 25.3 39

Cottonseed hulls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43.5 78.4 46.2 51.8 47.6 40

Cottonseed hulls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49.9 79.6 45.7 53.5 37.8 40

This bulletin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61.8 61.8 63.3 . . . . . . . .

Average (8) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14.1 68.4 49.0 47.7 25.2

Cottonseed meal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85.48 92.01 . . . . . . . . 55.06 3.01 14

Cottonseed meal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 88.12 94.37 46 83 43.84 19.77 14

Cottonseed meal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96.12 91.55 . . . . . . . . 71.02 37.98 14

Cottonseed meal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 83.50 90.10 19 50 60.50 34.10 14

Cottonseed meal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83.30 100.00 . . . . . . . . 95.9 . . . . . . . . 41

Cottonseed meal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82.20 97.20 . . . . . . . . 94. 7 . . . . . . . . 41

Cottonseed meal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83.60 94.64 43 .5 82.1 . . . . . . . . 41

This bulletin . . . . ..‘ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 85.14 98.84 11.90 71.94 54.67 5

Average (8) . . . . . . . . . . . . . . . . . . . . . . . . . . .1 . . . . . . . . . . . 85.93 94.84 15.22 71.88 18 69

Cottonseed meal, rich in hulls . . . . . . . . . . . . . . . . . . . . . . . . . . 73,4 90.8 22.7 46.2 . . . . . . . . 42

Cottonseed meal, rich in hulls . . . . . . . . . . . . . . . . . . . . . . . . . . 75.8 87 .8 14.7 54.5 . . . . . . . . 42

Cottonseed meal, rich in hulls . . . . . . . . . . . . . . . . . . . . . . . . . . 73.2 100.0 23 .1 54.6 . . . . . . . . 42

Cottonseed meal, rich in hulls . . . . . . . . . . . . . . . . . . . . . . . . . . 69.4 85.1 30.0 57.4 . . . . . . . . 42

Cottonseed meal, rich in hulls . . . . . . . . . . . . . . . . . . . . . . . . . . 69.3 80.9 42.8 63 . 3 . . . . . . . . 42

Cottonseed meal, rich in hulls . . . . . . . . . . . . . . . . . . . . . . . . . . 61.6 83.8 61.3 59.4 . . . . . . . . 42

Cottonseed meal, rich in hulls . . . . . . . . . . . . . . . 4 . . . . . . . . . . 74.6 96.0 31.4 62.6 . . . . . . . . 42

Cottonseed meal, rich in hulls . . . . . . . . . . . . . . . . . . . . . . . . . . 74.3 89.8 40.8 66.0 . . . . . . . . 42

Cottonseed meal, rich in hulls . . . . . . . . . . . . . . . . . . . . . . . . . . 71.9 82.4 55.4 68.6 . . . . . . . . 42

Cottonseed meal, rich in hulls. . . . : . . . . . . . . . . . . . . . . . . . . . 78.1 92.8 43.7 65.6 . . . . . . . . 42

Cottonseed meal, rich in hulls . . . . . . . . . . . . . . . . . . . . . . . . . . 78.4 95.5 55.3 70. 6 . . . . . . . . 42

Cottonseed meal, rich in hulls . . . . . . . . . . . . . . . . . . . . . . . . . . 74.7 106. 6 25.1 67.2 . . . . . . . . 42

Cottonseed meal and hulls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77.7 97.3 51.0 67.9 . . . . . . . . 5

Cold pressed cotton seed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81.7 97.0 50.3 73.7 . . . . . . . . 5

Cold pressed cotton seed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80.2 94.0 45.7 70.9 . . . . . . . . 5

Average. . . .' . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 74.28 85.98 39.55 63 .23 . . . . . . ..

Rice bran . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 64.7 54.8 13.3 78.1 33.0 32v

Rice bran . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 62.9 88.6 29.2 78.2 2.4 33

Rice mea1..._ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 62.0 91.0 . . . . . . .. 92.0 . . . . . . .. 34

Rice bran, this bulletin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67 .8 89.0 33. 7 79.4 28 5

Average (4) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64.35 80.85 19.05 81.92 15 98

20

TEXAS AGaRIGULTURAL EXPERIMENT STATION.

TABLE 6. Digestibility of FeedingStuffs aslReported by various Experiment

Stations——continued.

- Nitro- Refer:-
Protein. Ether Crude gen-free Ash. ence
extract. fiber. extract. No.
Ricepolish ........................................ .. 55.5 73.5 22.1 02.7 31.4 ‘"35
Rice polish, this bulletin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 69.0 90.6 29.4 89.6 28.6
Average (2) .................................... .. 57.3 32.1 25.7 91.1 30.0
Sorghumsilage ..................................... .. 9.0 55.0 53.0 54.0 ...... .. 35
Sorghum fodder, average of3lots . . . . . . . . . . . . . . . . . . . . .. 42.7 65.0 62.3 63.3 33.9 1
Sorghumhay ...................................... .. 13.0 54.0 55.5 55.9 23.4
Average (4) .................................... .. 35.5 52.2 50.5 51.5 $31.3
REFERENCES.
1. Texas Bulletin No. 147.
2. Compiled from analyses this Station.
3. South Carolina Bulletin N0. 3.
4. Office of Experiment Station Bulletin No. 77.
5. This Bulletin.
6. Tennessee Bulletin, Vol. IV, No. 5.
7. Ibid., Vol. II, No. 3.
8. Ibicl, Vol. IX, No. 3.
9. Georgia. Bulletin No. 7.
10. Kentucky Report, 1892. '
11. Massachusetts (State) Report, 1893.
12. Ontario Agricultural College Report, 1908.
13. Massachusetts Report, 1902.
14. North Carolina Bulletin No.97.
115. Analyses, Texas Station.
16. Texas Bulletin No. 154.
17. South Carolina Report, 1892.
18. New York (Geneva) Report, 1892.
19. Mississippi Report, 1899.
20. Wisconsin Report, 1904.
21. Colorado Bulletin No. 93.
22. South Dakota Bulletin No. 114.
24. North Carolina Report, 1889.
25. Ontario Agricultural College Report, 1906.
26. North Carolina Bulletin No. 160.
27. Massachusetts Hatch Report, 1903.
28. Bulletin No. 77. Office of Experiment Stat-ion, U. S. Depart-t
rnent of Agriculture. '
29. Oklahoma Bulletins Nos. 35-37.
30. Kansas Bulletin No. 103.
31. Texas Bulletin No. 104.
32. Louisiana Bulletin No. 77.
33. North Carolina Bulletin No. 160.
34. Massachusetts Report, 1896.
35. Mississippi Bulletin No. 123.

DIGESTION EXPERIMENTS WITH .TEXAS FEEDING STUFFS.

21

36. Massachusetts Report, 1906.
37. North Carolina Bulletin No. 87D.
38. Texas Bulletin No. 15. A
39. North Carolina Bulletin N0. 97.
40. North Carolin a Bulletin No. 118.
41., Maine Bulletin N0. 115.
42. Landw. J ahrbuch 40, p. 777.
Nutrients Fed, Excreted and Digested in Grams Per Period.
_ Nitro-
Protein. Ether Crude gen-free Ash.
extract. fiber. extract.
_ Period No. 19, feed Tabosa grass.
Sheep N0. 1, feed No. 5912-13—Total fed, 3200 gm . . . . . . . . . . . . . . . 118.4 36.8 1068.2 1459.2 29315

Residue 763 gm., N0. 5972 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28.2 » 8.8 251.9 342.5 73_2

Eaten . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 90.2 28.0 816.3 1116.7 225_4

Excreted 1404 gm., N0. 5970 . . . . . . . . . . . . . . . . .' . . . . . . . . . . . . . . . . . . 78.1 14.7 374.9 620.7 2101

Digested . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 12.2 3.3 441.4 496.0 9_3

Percentage digested . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13.5 11.8 54 .1 44.4 41 _ 3

Sheep No. 5, fed 3200 gm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118.4 36.8 1068.2 1459.2 29311

Residue 5 gm., No. 5912-13 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 0.2 0.1 1.7 2.2 0_5

Eaten . . . . . . . . . . . . . , . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118.2 36.7 1066.5 1457.0 293 _ 1

Excreted 1976 gm., No. 5971 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93.9 21.1 524.2 886.8 311 _5

Digested . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24.3 15.6 524.3 570.2 13_5

Percentage digested . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20.5 42.5 50.9 39.1 4_5

Average percentage digested (sheep) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 .0 27 .2 32.5 41.8 1&4
Period No. 2o, feed Bermuda hay. '
Sheep No. 4, feed No. 6027-28—Total fed 4800 gm . . . . . . . . . . . . . . . . 265.9 69.1 1273.9 2388.0 406_1

Residue (added) 117 gm., No. 6029 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.5 1.8 26.2 45.8 25_3

Eaten . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 274.4 70.9 1300.1 2433.8 4314

Excreted 2751 gm., No. 6041 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 160.9 47.0 698.5 1319.9 310_0

igested . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 113.5 23.9 601.6 1113.9 121_4

Percentage digested . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41.4 33.7 46.3 45.8 331

Sheep No. 5 fed 4800 gm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 265.9 69.1 1273.9 2391.0 4061

Residue 5 gm., N0. 6027-28 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.3 0.1 1.3 2.5 0_4

Eaten . . . . . . . . . . . . . . . . . . . . . . .- . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 265.6 69.0 1272.6 2388.5 405 _ 7

Excreted 2443 gm., N0. 6042 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 138.3 38.4 612.9 1159.7 287_3

Digested . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127.3 30.6 659.7 1228.8 118A

Percentage digested . . . . . . . . . . . . . . . ._ . . . . . . . . . . . . . . . . . . . . . . . . . . . 47 .9 44 . 3 51.8 51.4 29,2

Sheep No. 6, fed 4800 gm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 265.9 69.1 1273.9 2388.0 406,1

Residue (added) 8 gm., No. 6030 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 0.5 0.1 2.2 3.3 1,5

Eaten . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 266.4 69.2 1276.1 2391.3 407.6

Excreted 2522 gm., N0. 6043 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150.6 43.9 622.4 1202.5 296,6

Digested . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 115.8 25.3 653.7 118838 111,0

Percentage digested (sheep) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43.5 36.6 51.2 47.9 27,2

Average percentage digested (3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44.3 38.2 49.8 49.0 31,5
Period N0. 21, feed Sorghum Hay. _ _
Sheep N0. 4, ‘feed No. 6033-34, total fed 4800 gm . . . . . . . . . . . . . . . . . 203.0 85.9 1353 .1 2413.0 304,8

Residue 300 gm., N0. 6049 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19.1 6.0 89.4 132.9 26,9

Eaten . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 183.9 79.9 1263.7 2280.1 277.9

Excreted 2286 gm., N0. 6046 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 165.5 32.2 663 .4 996.2 210.3

Digested . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18.4 47.7 600.3 1283 .9 67.6

Percentage digested . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10.0 59.7 47.5 56.3 24.3

Sheep N0. 5, fed 4800 gm. . . . = . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 203.0 85.9 1353.1 2413.0 304.8

Residue 47 gm., N0. 6050 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.5 0.8 13.7 24.4 2.7

Eaten . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 201.5 85.1 1339.4 2388.6 302.1

Excreted 2062 gm., N0. 6047 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 169.9 39.2 498.4 925.6 231,6

Digested . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 31.6 45.9 841.0 146.3 70.5

Percentage digested . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15.7 53.9 62.8 61.2 23.3

Sheep N0. 6, fed 4800 gm._ . . . . .._ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 203.0 85.9 1353.3 2413.0 304.8

Residue 589 gm., N0. 6051 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 13.3 10.3 199.5 284.9 29,4

Eat-en . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 189.7 75.6 1153.6 2128.1 275.4

Excreted 1950 gm., N0. 6048 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 159.5 39.0 501.5 847.1 202.8

Digested . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .» . . . . . . . . . . . . . . .. 30.2 36.6 652.1 1281.0 62.6

Percentage digested . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15.9 48.4 56 .5 60.2 22.7

Average percentage digested . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13.9 54.0 55. 6 55 .9 23 . 4

22 Texas AGRICULTURAL EXPERIMENT STATION.

Nutrients Fed, Excreted and Digested in Grams Per Period——continued.

 

l Nitro-
Protein. Ether Crude gen-free Ash.
extract. fiber. extract.
Period N0. 22, feed prairie hay, cut before frost.
Sheep N0. 1, feed N0. 6064-65, total fed 4000 gm . . . . . . . . . . . . . . . . . 174.8 82.0 1171.2 1918.4 289.6

Residue 978 gm., N0. 6081 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 .‘6 20.0 285.9 468.1 71.5

Eaten . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 129.2 62.0 885.3 1450.3 218.1

Excreted 1809 gm., N0. 6078... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 165.0 42.3 420.2 789.3 229.2

‘Digested . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. — 35.8 19.7 465.1 661.0 11.1

Percentage digested . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . — 27.7 31.8 52.5 45.6 5.1

"Sheep No. 5, fed 4000 gm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 174.8 82.0 1171.2 1918.4 289.6

‘Residue 202 gm., N0. 6082 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9.4 4.9 58.4 94.6 14.6

‘Eaten . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 165.4 77.1 1112.8 1823.8 275.0

Excreted 2202 gm., No. 6079 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 183.6 45.1 523.2 985.8 263.4

Digested . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. - 18.2 32.0 589.6 838.0 11.6

‘Percentage digested . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . — 11.0 41.5 52.9 45.9 4.2

‘Sheep N0. 6, fed 4000 gm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 174.8 82.0 1171.2 1918.4 289.6

iResidue 28 gm., No. 6083 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.1 0.5 9.7 12.4 1.9

BEaten . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 173.7 81.5 1161.5 1906.0 287.7

“Excreted 2132 gm., N0. 6080 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 151.2 45.6 524.0 969.2 242.8

igested . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 22.5 35.9 637.5 936.8 44.9

Percentage digested . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12.9 44.0 54. 9 49.2 15.6

Average percentage digested (3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . — 8.6 39.1 53.5 46.9 4.9
Period No. 23, feed prairie hay, cut after frost.
‘Sheep No. 1, feed No. 6143-44, total fed 4000 gm . . . . . . . . . . . . . . . . . 148.0 86.0 1208.0 1854.4 354.4

Residue 1890 gm., No. 6148 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68.6 42.3 552.4 884.5 167.6

Eaten . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79.4 43.7 655.6 969.9 186.8

Excreted 684 gm., No. 6145 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66.1 17.0 137.4 295.6 109.9

igest . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 13.3 26.7 518.2 674.3 76.9

Percentage digested . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16.7 61.1 79.0 70.5 41.2

Sheep No. 5, fed 4000 gm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 148.0 86.0 1208.0 1854.4 354.4

Residue 138 gm. No. 6149 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 5.1 1.9 48.3 56.7 9.5

Eaten . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 142.9 84.1 1158.7 1797.7 344.9

Excreted 1914 gm. No. 6146 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 141.3 40.0 427.8 872.2 272.2

"Diges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 1.6 44.1 730.9 925.5 72.7

Percentage digested . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.1 52.4 63 .1 51.5 21.1

Sheep No. 6, fed 4000 gm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 148.0 86.0 1208.0 1854.4 354.4

Residue (added) 57 gm., N0. 6150 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.2 1.3 17.2 26.2 5.0

aten . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 150.2 87.3 1225.2 1880. 6 359.4

Excreted 2082 gm., No. 6147 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 136.4 36.2 503.0 953.1 281.1

igest . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 13.8 51.1 722.2 927.5 78.3

Percentage digested sheep) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 9.2 58.5 58.9 49.3 21.8

Average percentage igested (3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 9.0 57.3 66.7 57.1 28.0
Period No. 24, feed Tabosa grass.
Sheep No. 4, feed No. 6288-89, total fed 4000 gm . . . . . . . . . . . . . . . . . 140.8 48.4 1287. 6 1844.0 425.6

Residue 20 gm., No. 6288-89 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 0.7 0.2 6.4 9.2 2.1

Eaten . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 139.1 48.2 1281.2 1834.8 423.5

iExcreted 2049 gm., No. 6209 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107.6 28.1 575.8 882.3 333.8

l igested . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 31.5 , 20.1 705.4 952.5 89.7

Percentage digested . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22.7 41.7 55 .1 51.9 21.2

zSheep No. 5, fed 4000 gm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140.8 48.4 1287.6 1844.0 425.6

esidue 0 gm. No. -—- . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..

" aten . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140.8 48.4 1287.6 1844.0 425.6

Excreted 1970 gm., N0. 6291 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108.4 23.4 543.7 843.9 333.9

Digested . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32.4 25. 0 743 .9 1000 .1 91.7

Percentage digested . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23.0 51.7 57 .8 54.2 21.5

Average percentage digested (2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22.9 46.7 56.5 53 .1 21.4
Period No. 24a, feed, alfalfa.
Sheep N o. 1, fed 3000 gm., alfalfa No. 6724-25 . . . . . . . . . . . . . . . . . . . . 433.5 47.4 853.5 1177.5 260.4

‘T al eaten . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 433.5 47.4 853.5 1177..5 200.4

Excreted 1147 gm., No. 6749 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96.1 39.1 499.9 334 6 117.1

igested . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 337.4 8.3 353.6 842.9 143.3

Percentage digested . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77.83 17.51 41.43 71.58 55.03

Sheep N0. 2, fed 3000 gm., alfalfa No. 6724-25 . . . . . . . . . . . . . . . . . . . . 433.5 47.4 453.5 1177 .5 260.4

Total eaten . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 433 . 5 47. 4 453 .5 1177 . 5 260. 4

Excreted 1149 gm., No. 6750 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 94.8 35.8 510.6 328.5 117.4

Digested . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 338.7 11.6 342.9 849.0 143.0

Percentage digested . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . , . . . . 78.13 24.49 40.17 72.10 54.91

Average percentage digested from alfalfa . . . . . . . . . . . . . . . . . . . . . . . . . 77.98 20.99 40.80 71.84 54. 97

V

DIGESTION EXPERIMENTS WITH TEXAS FEEDING STUFFS.

23

Nutrients Fed, Excreted and Digested in Grams Per Period——continued.

' Plitro-

Protein. Ether Crude gen-free

extract. fiber. extract.

Period No. 25, alfalfa and cold pressed cotton seed.

Sheep No. 1, fed 1800 gm., alfalfa No. 6724-25 . . . . . . . . . . . . . . . . . . . . 260.1 28.4 512 .1 706.5
Sheep No. 1, fed 1800 gm., cold pressed cotton seed No. 6747-48. . . . 460.4 178.2 423.2 539.8
TFotaleaten . . . . . . . . . . . . . . . . . . . . . . . . ..‘ . . . . . . . . . . . . . . . . . . . . . . . .. 720.5 206.6 935.3 1246.3

Excreted 1262 gm., N0. 6784 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147.9 29.4 505.1 364.8

Digested . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 572.6 177.2 430.2 881.5

Digested from alfalfa (No. 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200.5 5.8 217.4 512.8

Digested from cold pressed cotton seed . . . . . . . . . . . . . . . . . . . . . . . . . . 372 .1 171.4 212 . 8 368. 7

Percentage digested from cold pressed cotton seed . . . . . . . . . . . . . . . . . 80.82 96.18 50.28 67.99

Sheep No. 2, fed 1800 gm., alfalfa No. 6724-25 . . . . . . . . . . . . . . . . . . . . 260.1 28.4 512.1 706.5
Sheep No. 2, fed 1800 gm., cold pressed cotton seed No. 6747-48. . . . 460.4 178.2 423.2 539.8
Total eaten . . . . . . . . . . . . . . . l . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 720.5 206.6 935.3 1246.3

Excreted 1176 gm., No. 6785 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 139.5 26.6 505.1 305.1

Digested . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 581.0 180.0 430.2 941.2

Digested from alfalfa (No. 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 200.5 5.8 217.4 512.8

Digested from cold pressed cotton seed . . . . . . . . . . . . . . . . . . . . . . . . . . 380.5 174.2 212.8 428.4

Percentage digested from cold pressed cotton seed . . . . . . . . . . . . . . . . . 82.64 97. 76 50.28 79.36

Average percentage digested from cold pressed cotton seed . . . . . . . . . 81.73 96.97 50.28 73.68
Period No. 26, alfalfa and rice bran.
Sheep No. 1, fed 1800 gm., alfalfa No. 6724-25 . . . . . . . . . . . . . . . . . . . . 260.1 28.4 512.1 706.5

Sheep No. 1, fed 1800 gm., rice bran No. 6770-71 . . . . . . . . . . . . . . . . . 224.1 242.6 190.1 826.9

Total eaten . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 484.2 271.0 702.2 1533.4

Ifixcreted 1242 gnu” llo.6894 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 137.9 53.9 413.8 378.8

Ifigested . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 346.3 217.1 288.4 1184.6

Digested from alfalfa (No. 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 200.5 5.8 217.4 512.8

Digested from rice bran . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 145.8 211.3 71.0 671.8

Percentage digested from rice bran . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65.06 87.10 37..35 81.24

Sheep No. 2, fed 1800 gm., alfalfa No. 6724-25 . . . . . . . . . . . . . . . . . . . . 260.1 28.4 512.1 706.5

Sheep No. 2, fed 1800 gm., rice bran No. 6770-71 . . . . . . . . . . . . . . . . . 224.1 242.6 190.1 826.9

'Fotaleaten . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 484.2 271.0 702.2 1533.4

Excreted 1252 gm., No. 6895 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  . . . . 125.5 44.9 427.6 379.7

Digested . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . 358.7 226.1 274.6 1153.7

Digested from alfalfa (No. 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 205.5 5.8 217.4 512.8

Digested from rice bran . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 158.2 220.3 57 .2 640.9

Percentage digested from rice bran . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70.59 90.80 30.09 77.50

Average percentage digested from rice bran . . . . . . . . . . . . . . . . . . . . . . . 67.83 88.95 33.73 79.37
Period No. 27, alfalfa and rice polish.
Sheep No. 1, fed 1800 gm., alfalfa No. 6724-25 . . . . . . . . . . . . . . . . . . . . 260.1 28.4 512.1 706.5

Sheep No. 1, fed 1800 gm., rice polish No. 6879-80 . . . . . . . . . . . . . . . . 229.9 187.7 80.3 1039.9

Total eaten . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 490.0 216.1 592.4 1746.4

Excreted 1031 gm., No. 6925 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132.2 43.2 330.8 302.8

Digested . . . . . . . . . . . . . . . . . . . . . . . . . . ..' . . . . . . . . . . . . . . . . . . . . . . . .. 351.8 172.9 261.6 1443.6

Digested from alfalfa (N0. 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260.5 5.8 217.4 512.8

Digested from rice polish . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 151.3 167.1 44.2 930 . 8

Percentage digested from rice polish . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65.81 89.02 55.04 89.51

Sheep No. 2, fed 1800 gm., alfalfa No. 6724-25 . . . . . . . . . . . . . . . . . . . . 60.1 28.4 512.1 706.5

Sheep No. 2, fed 1800 gm., rice polish No. 6879-80 . . . . . . . . . . . . . . . . 229.9 187 .7 80.3 1039.9

'Totaleaten . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 490.0 216.1 592.4 1746 4

Excreted 1073 gm., No. 6926 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123.4 37.3 372.0 301.4

Digested . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 357. 8 178.8 220. 4 1445.0

Digested from alfalfa (No. 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 200.5 5.8 217.4 512.-S

Digested from rice polish . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 166.1 173.0 3.0 932.2

Percentage digested from rice polish . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72.25 92.17 3. 74 89.65

Average percentage digested from rice polish . . . . . . . . . . . . . . . . . . . . . 69.03 90.60 29.39 89.58
Period No. 28, alfalfa and corn bran.
Sheep No. 1, fed 1800 gm., alfalfa No. 6724-25 . . . . . . . . . . . . . . . . . . . . 260.1 28.4 512.1 706.5

Sheep No. 1, fed 1800 gm., corn bran No. 6907-08 . . . . . . . . . . . . . . . . . 166.5 97.9 185.6 1163.5

Total eaten . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 426. 6 126.3 697.7 1870.0

Excreted 980 gm., No. 6974 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108.0 35.3 323.7 353.7

[figested . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 318.6 91.0 374.0 1516.3

Digested from alfalfa (No. 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200.5 5.8 217.4 512.8

Digested from corn bran . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118.1 85.2 156.6 1003 .5

Percentage digested from corn bran . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70. 93 87. 03 84.37 86.25

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24 Texas AGRIe-IILTURAI. EXPERIMEXT STATIoN.

Nutrients Fed, Excreted and Digested in Grams Per Peri0d——continued.

l Nitro-
Protein. Ether Crude gen-free Ash. -
extract. fiber. extract.
Sheep No. 2, fed 1800 gm., alfalfa N0. 6724-25 . . . . . . . . . . . . . . .  . . . 260.1 28.4 512.1 706.5 156.2

Sheep N0. 2, fed 1800 gm., corn bran No. 6907-08 . . . . . . . . . . . . . . . . . 166.5 97.9 185.6 1163.5 39.8

Total eaten . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 426.6 126.3 _ 697.7 1870.0 196.0

Excreted 874 gm., No. 6975 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105.1 40.5 285.3 282.1 101.9

Digested . . . . . . . . . . . . ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 321.5 85.8 412.4 1587.9 94.1

Digested from alfalfa (No.1) . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . .. 200.5 5.8 217.4 512.8 81.3

Digested from corn bran . . . . . . . . . . . . . . . . . . . . . . . . . . . . ., . . . . . . . . . 121.0 80.0 195.0 1075.1 12.8

Percentage digested from corn bran . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72.67 81.72 105.06 85.95 32.16

Average percentage digested from corn bran . . . . . . . . . . . . . . . . . . . . . . 71.80 84.38 94.72 86.10 33.92
Period No. 29, alfalfa.
Sheep No. 1, fed 3000 gm., alfalfa No. 6724-25 . . . . . . . . . . . . . . . . . . . . 433.5 1 47.4 853.5 1177.5 260.4

Total eaten . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 433.5 47.4 ' 853.5 1177.5 260.4

Excreted 1208 gm., No. 6985 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 111.4 40.5 520.0 331.2 134.9

Digested . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 322.1 6.9 333.5 846.3 125.5

Percentage digested . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74.30 14.56 39.07 71.87 48.19

Sheep No. 2, fed 3000 gm., alfalfa No. 6724-25 . . . . . . . . . . . . . . . . . . . . 433.5 47.4 853.5 1177.5 260.4

Total eaten . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 433.5 47.4 853.5 1177.5 260.4

Excreted 1048 gm., No. 6986 . . . . . . . . . . . . . . . . . . . . ; . . . . . . . . . . . . . . 94.8 35.7 434.0 296.7 130.5

Digested . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 338.7 11.7 419.5 880.8 " 129.9

Percentage digested . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78.13 24.68 49.15 74.80 49.88

Average percentage digested (alfalfa) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76.22 19.62 44.11 73.34 49.04

Average No. 1 for 4 sheep, experiment 24a and 29 . . . . . . . . . . . . . . . q . 77.10 20.31 42.46 72.59 52.01
Period N0. 30, feed, silage.
Sheep No. 1, feed No. 6998-99, total fed 9000 gm . . . . . . . . . . . . . . . . . 200.7 63.9 768.6 1642.5 168.3

Eaten . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200.7 63.9 768. 6 1642.5 168.3

Excreted 1353 gm., No. 7000 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 148.0 25.6 379.7 572.5 124.2

Digested...._ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  52.7 38.3 388.9 1070.0 44.1"

Percentage digested . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .» . . . . . . . . . . 26.26 59.94 50.60 65.14 26.20

Sheep No. 2, fed 9000 gm . . . . . . . . . . . . . . . . . . . . . .- . . . . . . . . . . . . . . . . 200.7 63.9 768.6 1642.5 168.3

Residue (added) 27 gm., No. 6998-99 . . . . . f . . . . . . . . . . 1 . . . . . . . . . . . 1.8 0.6 6.7 14.4 1.5

Eaten . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 198.9 63.3 761.9 1628.1 166.8

Llxcreted 1459 gm., No. 7001 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 156.6 27.9 397.1 615.7 144.4

Digested . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .' . . . . .. 42.3 35.4 364.8 1012.4 22.4

Percentage digested . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 27 55.92 47.88 62.19 13.43

Average percentage digested (2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23.77 57.93 49.24 63 .67 19.82
_ Period No. 31, alfalfa.
Sheep No. 3, fed 3000 gm., alfalfa No. 7005-06 . . . . . . . . . . .' . . . . . . . . . 448.5 42.9 917.1 1164.6 247.2

Total eaten . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ... . . . . . . . .. 448.5 42.9 917.1 1164.6 247.2

Excreted 1142 gm., No. 7029 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 112.0 29.9 470.5 335.1 130.3

Digested . . . . . . . . . . . . . . . . . . . . . . . . . . . . .- . . . . . . . . . . . . . . . . . . . . . . .. 336.5 13.0 446.6‘ 829.5 116.9

Percentage digested . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75.03 30.30 48.70 71.23 47.29

Sheep N0. 4, fed 3000 gm., alfalfa N0. 7005-06 . . . . . . . . . . . . . . . . . . . . 448.5 42.9 917.1 1164.6 247.2

Total eaten . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 448.5 42.9 917.1 1164.6 247.2

Excreted 1232 gm., No. 7023 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 119.3 34.5 518.4 341.4 144.7

Digested . . . . . . . . . . . . . . . . .' . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 329.2 8.4 398.7 923.2 102.5

Percentage digested . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73 .40 19.58 43.47 70.69 41.46

Average percentage digested (alfalfa 2) . . . . . . . . . . . . . . . . . . . . . . . . . . 74.22 24.94 46.09 70.96 44.38
Period No. 32, alfalfa and Kafiir chops.
Sheep No. 3, fed 1800 gm., alfalfa N0. 7005-06 . . . . . . . . . . . . . . . . . . . . 269.1 25.7 550.3 698.8 148.3

Sheep No. 3, fed 1800 gm., Kaffir chops No. 7009-10 . . . . . . . . . . . . . . 198.9 g 43.6 43.6 1269.7 28.3

Total eaten . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 468.0 69.3 593.9 1968.5 I 176.6

Excreted 876 gm., N0. 7029 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 116.4 32.1 314.2 255.0 99.4

Digested . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..- . . . . . . . . . . . . . . . . . . .. 351.6 37.2 279.7 1713.5 77.2

Digested from alfalfa . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 198.7 5.6 257.2 499.7 65.9 _

Digested from Kaflir chops . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 152.9 31.6 ‘ 2.5 1213.8 11.3 '

Percentage digested from Iiaflir chops . . . . . . . . . . . . . . . . . . . . . . . . . . . 76.87 72.48 57. 61 95.60 39.93

Sheep No. 4, fed 1800 gm., alfalfa No. 7005-06 . . . . . . . . . . . . . . . . . . . . 269.1 25.7 550.3 698.8 148.3

Sheep No. 4, fed 1800 gm., Kaflir chops No. 7009-10 . . . . . . . . . . . . . . 198.9 43.6 43.6 1269.7 28.3

Total eaten . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 468.0 69.3 593.9 1968.5 176.6

Excreted 941 gm., No. 7030 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99.1 29.4 313.8 343.1 ' 94.5

Digest . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 368.9 39.9 280.1 1625.4 82.1

Digested from alfalfa . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 198. 7 5. 6 257.2 499.7 65.9

Digested from Kaffir chops . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 170.2 34.3 22.9 1125.7 16.2

Percentage digested from Kaffir chops . . . . . . . . . . . . . . . . . . . . . . . . . . . 85. 57 78.67 52.52 88.66 57.24

Average percentage digested Kafiir chops . . . . . . . . . . . . . . . . . . . . . . . . 81.22 75.58 52.06 92.13 48.59

DIGESTION EXPERIMENTS WITH TEXAS FEEDING STUFiPs. 25

Nutrients Fed, Excreted and Digested in Grams Per Period—continued.

N itro- s
Protein. Ether Crude gen-frec- A sh.
‘ extract. fiber. extract.
Period No. 23, alfalfa and Kafiir heads.
Sheep N0. 3, fed 1800 gm., alfalfa No. 7005-06 . . . . . . . . . . . . . . . . . . . . 269.1 25.7 550.3 698.8 148.3

Sheep No. 3, fed 1800 gm., Kaflir heads No. 7031-32 . . . . . . . . . . . . . . 172.3 42.5 144.0 1213.9 55.6

Uneaten 6 gm., heads No. 7031-32 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.6 0.1 0.5 4.0 0.2

Total eaten . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 440.8 68.1 693.8 1908.7 203.7

Excreted 995 gm., No. 7046 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122.4 25.6 332.9 332.2 112.2

Digested . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 318.4 42.5 360.9 1576.5 91.5

Digested from alfalfa . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -. . . . . . . . 198.7 5.6 257.2 499.7 65.9

Digested from Kafiir heads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119.7 36.9 103.7 1076.8 25.6

Percentage digested from Kaffir heads . . . . . . . . . . . . . . . . . . . . . . . . . . . 69.47 86.82 72.01 88.71 46. 04

Sheep No. 4, fed 1800 gm., alfalfa No. 7005-06 . . . . . . . . . . . . . . . . . . . . 269.1 25.7 550.3 698.8 148.3

Sheep No. 4, fed 1800 gm., Kaflir heads No. 7031-32 . . . . . . . . . . . . . . 172.3 42.5 144.0 1213.9 55.6

Uneaten 3 gm., heads No. 7031-32 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.3 0.1 0.2 2.0 1.0

Total eaten . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 441.1 68 .1 694.1 1910. 7 203.8

Excreted 1303 gm., No. 7047 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 143.6 36.2 364.7 535.7 123.3

Digested: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 297.5 31.9 329.4 1375.0 80.5

Digested from alfalfa . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 198.7 5.6 257.2 499.7 65.9

Digested from Kaflir heads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . f . 98.8 - 26.3 72.2 875.3 14. 6

Percentage digested from Kafiir heads . . . . . . . . . . . . . . . . . . . . . . . . . . . 57 .34 61.88 50.14 72.11 26.26

Average percentage digested from Kaflir heads . . . . . . . . . . . . . . . . . . . . 63.41 74.35 61.08 80.41 36.15
Period No. 34, alfalfa and cold pressed cottonseed.
Sheep N0. 3, fed 1800 gm., alfalfa No. 7005-06 . . . . . . . . . . . . . . . . . . . . 269.1 25.7 550.3 698.8 148.3

Sheep N0. 3, fed 1800 gm., cold pressed cottonseed N o. 7034-35 . . . . . . . 498. 6 128 . 3 463 .9 518. 8 67.5

Total eaten . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 767.7 154.0 1014.2 1217.6 215.8

Excreted 1289 gm., No. 7052 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 161.1 26.4 551.4 343.9 107.6

Digested . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ." . . . . . . . . . . . . . 606.6 127.6 462.8 873.7 108.2

Digested from alfalfa . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 198.7 5. 6 257.2 499.7 65.9

Digested from cold pressed cottonseed . . . . . . . . . . . . . . . . . . . . . . . . . . . . 407.9 122.0 205.6 374.0 42.3

Percentage digested from cold pressed cottonseed . . . . . . . . . . . . . . . . . 81.81 95.09 44.32 72.09 62.67‘

Sheep No. 4, fed 1800 gm., alfalfa No. 7005-06 . . . . . . . . . . . . . . . . . . . . 269.1 25.7 550.3 698.8 148.3

Sheep No. 4, fed 1800 gm., cold pressed cottonseed No. 7034-35 . . . . . . . 498. 6 128. 3 463.9 518. 8 67 .5

Total eaten . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 767.7 154.0 1014.2 1217.6 215.8.

Excreted 1354 gm., 7053 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 177.1 28.2 538.9 377.2 135.8

Digested . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 590. 6 125 .8 475.3 840.4 80.0-

Digested from alfalfa . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 198.7 5.6 257.2 499.7 65.9»

Digested from cold pressed cottonseed . . . . . . . . . . . . . . . . . . . . . . . . . .  391.9 120.2 218.1 340.7 14.1

Percentage digested from cold pressed cottonseed . . . . . . . . . . . . . . . . . . 78.60 93. 69 47.01 69.67 20.89

Average percentage digested from cold pressed cottonseed . . . . . . . . . . 80.21 94.39 45. 67 70.88 41.78
Period N0. 35.
Sheep No. 3, fed 1800 gm., alfalfa No. 7005-06 . . . . . . . . . . . . . . . . . . . . 269.1 25.7 550.3 698.8 148.3

Sheep No. 3, fed 672 gm., cottonseed hulls No. 7048-49 . . . . . . . . . . . . 26.7 5.5 334.4 233.3 16.7

Sheep No. 3, fed 1128 gm., cottonseed meal N0. 7050-51 . . . . . . . . . . . 498.6 127.4 91.7 270.1 65.1

Total eaten . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 794.4 158.6 976.4 1202.2 230.1

Excreted 1278 gm., No. 7076 . . . . . . . . . . . . . . . . . . . . . . . .- . . . . . . . . . . . 183.0 22.7 490.3 349.0 145.2

Digested . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 611.4 135.9 486.1 853 .2 84.9

Digested from alfalfa . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 198.7 5.6 257.2 499.7 65.9"

Digested from meal and hulls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 412.7 130.3 228.9 353.5 19.0"

Digested from cottonseed meal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 424.5 125.9 10.9 194.3 35.6

Digested from cottonseed hulls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . — 11.8 4.4 218.0 139.2 — 16.6»

Percentage digested from meal and hulls . . . . . . . . . . . . . . . . . . . . . . . . . 78.57 98.04 53.72 70.22 23. 22*

Percentage digested from cottonseed hulls . . . . . . . . . . . . . . . . . . . . . . . . — 44.19 80.00 65.19 68.24 — 99.44.

Sheep No. 4, fed 1800 gm., alfalfa No. 7005-06 . . . . . . . . . . . . . . . . . . . . 269.1 25.7 550.3 698.8 148.3’

Sheep No. 4, fed 672 gm., cottonseed hulls No. 7048-49 . . . . . . . . . . . . 26.7 5.5 334.4 233.3 16.7

Sheep No. 4, fed 1128 gm., cottonseed meal No. 7050-51 . . . . . . . . . . . 98.6 127.4 91.7 270.1 65.1

Total eaten . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 794.4 158.6 976.4 1202.0 230.1

Excreted 1330 gm., No. 7077 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 192.2 24.7 513.2 372.1 140.3

Digested . . . . . . . .- . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 602.2 133.9 463.2 829.9 89.8

Digested from alfalfa . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 198.7 5.6 257.2 499.7 65.9

Digested from meal and hulls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 403.5 128.3 206.0 330.2 23.9

Digested from cottonseed meal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 424.5 125 . 9 10.9 194.3 35.6-

Digested from cottonseed hulls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . — 21.0 2.4 195.1 135.9 — 11.7

Percentage digested from meal and hulls . . . . . . . . . . . . . . . . . . . . . . . . . 76.81 96.54 48.35 65.59 29.22"

Percentage digested from cottonseed hulls . . . . . . . . . . . . . . . . . . . . . . . . — 78.65 43.64 58.34 58.25 — 70. 06-

Average percentage digested meal and hu.1ls . . . . . . . . . . . . . . . . . . . . . . 77. 69 97.29 51.04 67.91 26.22

Average percentage digested cottonseed hulls . . . . . . . . . . . . . . . . . . . . . — 61.42 61.82 61.77 63.25 — 84.37

26 TEXAS AGRICULTURAL EXPERIMENT STATION.

Nutrients Fed, Excreted and Digested in -Grams Per Period——continued.

. _ Nitro-
Protein. Ether Crude gen-free Ash.
extract. fiber. extract.
Period No. 36, alfalfa and cottonseed meal.
Sheep No. 3, fed 1800 gm., alfalfa N0. 7005-06 . . . . . . . . . . . . . . . . . . . . 269.1 25.7 550.3 698.8 148.3

Sheep No. 3, fed 1800 gm., cottonseed meal No. 7050-51 . . . . . . . . . . . 79516 203.2 146.3 431.1 103.9

Total eaten . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1064.7 228.9 696.6 1129.9 252.2

Excreted 1144 gm., No. 7100 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 183.7 21.9 426.5 308.5 126.1

Digested . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 881.0 207.0 270.1 821.4 126.1

Digested from alfalfa . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 198.7 5.6 257.2 499.7 65.9

Digested from cottonseed meal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 682.3 201.4 12.9 321.7 60.2

Percentage digested from cottonseed meal . . . . . . . . . . . . . . . . . . . . . . . . 85.76 99.11 8.82 74.62 57 .94

Sheep No. 4, fed 1800 gm., alfalfa No. 7005-06 . . . . . . . . . . . . ..'. . . . .. 269.1 25.7 550.3 698.8 148.3

Sheep No. 4, fed 1800 gm., cottonseed meal No. 7050-51 . . . . . . . . . . . 795.6 203.2 146.3 431.1 103.9

Total eaten . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  . . . 1064.7 228.9 696.6 1129.9 252.2

Excreted 1180 gm., No. 7101 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 193.6 23.0 417.5 331.6 132.9

Digested . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 871.1 205.9 279.1 798.3 119.3

Digested from alfalfa . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 198.7 5.6 257.2 499.7 65.9

Digested from cottonseed meal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 672.4 200.3 21.9 298.6 53.4

Percentage digested from cottonseed meal . . . . . . . . . . . . . . . . . . . . . . . . 84.51 98.57 14.97 69.26 51.40

Average percentage digested from cottonseed meal . . . . . . . . . . . . . . . . 85.14 98.84 11.90 71.94 54.67
Period No. 37 alfalfa.
Sheep No. 3, fed 3000 gm., alfalfa No. 7005-05 . . . . . . . . . . . . . . . . . . . . 448.5 42.9 917.1 1164.6 247.2

Residue 7 gm., No. 7005-06 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.0 0.1 2.1 2.7 0.6

Total eaten . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 447.5 42.8 915.0 1161.9 246.6

Excreted 1202 gm., N0. 7123 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117.6 36.2 505.4 342.1 129.4

Digested . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 329.9 6.6 409.6 819.8 117.2

Percentage digested . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 . . . . . . . . . . . . 73.72 15.42 44.76 70.56 47.53

Sheep No. 4, fed 3000 gm., alfalfa No. 7005-06 . . . . . . . . . . . . . . . . . . . . 448.5 42.9 917.1 1164.6 247.2

Residue 7 gm., No. 7005-06 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 1.0 0.1 2.1 2.7 0.6

Total eaten . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 447.5 42.8 915.0 1161.9 246.6

Excreted 1132 gm., No. 7124. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119.8 33.4 456.8 307.6 144.8

Digested . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 327.7 9.4 _ 458.2 854.3 101.8

Percentage digested . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73.23 21.96 50.08 73.52 41.28

Average percentage digested from alfalfa (2) . . . . . . . . . . . . . . . . . . . . . . 73 .48 18. 69 47.42 72.04 44.41

Average percentage digested from alfalfa (4) . . . . . . . . . . . . . . . . . . . . . . a 73.85 21.81 46.76 _‘ 71.50 44.40

SUMMARY AND CONCLUSIONS.

This bulletin contains information concerning the digestibility and
productive value of alfalfa hay, Bermuda hay, corn bran, co-ld-pressed
cotton seed, cotton seed hulls, cotton seed meal, kafir corn chops, kafir
head chops, rice bran, rice polish, sorghum and coWpea silage, sorghum
hay, prairie hay, Tabosa grass.

The relative values of the feeding stuffs, the digestibility and the
composition are shown in appropriate tables.