Journal of Agricultural Research 
Vol. VII, No. 7 
3*4 
would seem reasonable to suppose that the same relation would hold 
true in the digestive processes of animals. This being the case, more of 
the total energy of the material would be used up in digestion and assimi¬ 
lation, which otherwise might be used for milk production. 
Experiment II.—A short experiment with three cows, supplementary 
to Experiment I, was carried out during January and February of 1915. 
A basal ration somewhat below what the cows needed for maintenance 
and milk was fed for two weeks. Then the cows were given 3 pounds of 
vegetable-ivory meal in addition for two weeks. During the fifth and 
sixth weeks the cows were again given only the basal ration. The object 
was to see whether the animals would show any increase in weight or milk 
production in response to the addition of the ivory meal. 
Table XVII.— Average daily ration {in pounds) consumed per cow in Feeding Experi¬ 
ment II 
Character of ration. 
Hay. 
Wheat 
bran. 
Cottonseed 
meal. 
Hominy. 
Vegetable- 
ivory meal. 
Basal. 
18. 67 
18. 67 
2. 34 
2.34 
2 
I 
Vegetable-ivory meal. 
2 
I 
3 
The quantity and quality of the milk was determined for the second week 
of each section of the experiment. Samples were taken in the usual way 
and the animals were weighed on two consecutive days at the beginning 
and end of each second week. 
Little can be said about body weight, as the periods were of too short 
duration. 
Table XVIII.— Yield of milk and milk ingredients from different rations in Feeding 
Experiment II 
BASAL RATION, JANUARY 20-26 
Name of cow. 
Milk. 
Fat. 
Solids. 
Amy. 
Pounds. 
196. s 
137 -6 
121. 9 
Per cent . 
5 * So 
4. 70 
5-38 
Pounds. 
IO. 8l 
6.47 
6.56 
Per cent. 
i 3 - 77 
13 - 2 3 
13. 86 
Pounds . 
27. 06 
l8. 20 
l6. 90 
Betty III. 
Red III. 
Total. ... 
456.0 
a 5. 22 
23.84 
a 13- 63 
62. l6 
VEGETABLE-IVORY-MEAL RATION, FEBRUARY 3-9 
Atny.. 
199.2 
4.90 
9. 76 
13 - i 4 
26. 17 
Betty III. 
158. 0 
4 - 58 
7. 24 
13-25 
20. 94 
Red III. 
125.1 
5. 28 
6. 61 
i 3 - 7 i 
17 * IS 
Total. 
482.3 
a 4 . 90 
23. 61 
a 13. 30 
64. 26 
BASAL RATION, FEBRUARY 21-27 
Amy. 
190. 3 
146. 4 
125. 4 
4. 80 
4. 60 
S- 38 
9-13 
6. 73 
6- 75 
13. 12 
* 3 - 3 1 
i 3 - 93 
24.97 
19.49 
17- 47 
Betty III. 
Red III. 
Total. 
462. 1 
« 4.89 
22. 6l 
a 13- 21 
61.93 
® Average obtained by dividing the total number of pounds of fat or solids by the total number of pounds 
of milk. 
