Nov. 13,1916 
Vegetable-Ivory Meal 
3i5 
Though of short duration, the experiment shows the favorable effects 
of the addition of 3 pounds per cow daily of the ivory meal to the basal 
ration. This addition increased the milk flow 5.7 per cent, and its 
removal caused a decrease of 4.2 per cent. 
Another experiment in which a basal ration with and without vegetable- 
ivory meal was fed three cows was carried on for a period of 81 days. 
The addition of the meal was followed by an increase in milk yield and 
its removal resulted in a milk shrinkage. This trial, together with the 
one just described, shows that the ivory meal possesses a distinct nutri¬ 
tive value. 
Experiment III.—In Experiment I a definite quantity of vegetable-, 
ivory meal was compared with an equal quantity of com meal. In 
order to demonstrate more fully the effect of the vegetable ivory, a 
herd of six cows was put on a basal ration of hay, bran, cottonseed meal, 
and hominy meal for four weeks, exclusive of a preliminary period of 10 
days, during which tithe three received in addition a quantity of the 
ivory meal. After this period, which will be known as the first half of 
the experiment, conditions were reversed, and during the four weeks of 
the second half the first three cows went without the vegetable-ivory 
meal while the others received it. 
Each cow was weighed before watering and feeding on two consecu¬ 
tive days at the beginning and end of each half of the trial. Samples of 
hay were taken at the beginning, middle, and end of each half, while the 
grains were sampled daily. The milk of each cow was sampled in the 
usual manner on the first, third, and fourth week of each half. The 
results are given in Tables XIX and XX. 
Table XIX.— Average daily ration (in pounds) consumed per cow in Feeding Experi¬ 
ment III 
Character of ration. 
Hay. 
Wheat 
bran. 
Cottonseed 
meal. 
Hominy. 
Vegetable- 
ivory meal. 
Basal plus vegetable-ivory meal... 
Basal minus vegetable-ivory meal. 
18.32 
18.31 
2. 30 
2. 31 
2. 22 
2. 23 
i- 57 
57 
2. 79 
Table XX. —Quantity of digestible organic nutrients in the average daily ration of 
Feeding Experiment III 
Character oi ration. 
Protein. 
Fat. 
Fiber. 
Nitrogen- 
free ex¬ 
tract. 
Total. 
Nutritive 
ratio. 
Basal plus vegetable- 
ivory meal. 
2. JO 
O. 61 
3 - 04 
io -37 
16. 52 
1:5. 90 
Basal minus vegetable- 
ivory meal. 
2. II 
. 60 
2. 92 
8. 36 
13 - 99 
^ 5 - 97 
