Nov. 13.19*6 
Vegetable-Ivory Meal 
317 
the reversal method was employed, each period continuing five weeks, 
in addition to the preliminary period. Hay, bran, and cottonseed meal 
composed the basal ration, to which were added like amounts of dry 
matter in the form of corn meal or ivory meal (Tables XXII and XXIII). 
Only a summary is here presented. 
All the customary precautions were taken to make the experiment as 
accurate and representative as possible. The milking was done at the 
same time each morning and evening, and the animals were weighed at 
regular intervals. All feed and milk samples were taken in the usual 
manner. 
Table XXII.— Average daily ration (in pounds) consumed per cow in Feeding Experi¬ 
ment IV 
Character of ration. 
Hay. 
Bran. 
Cottonseed 
meal. 
Com meal. 
Vegetable- 
ivory meal. 
Vegetable-ivory meal. 
Pnrn mpfll . 
18.5 
18. s 
2. 38 
2. 38 
2. 19 
2. 19 
4. OI 
3 - 75 
Table XXIII. —Quantity of digestible organic nutrients in the average daily ration in 
" " Feeding Experiment IV 
Character of ration. 
Protein. 
Fat. 
Fiber. 
Nitrogen- 
free extract. 
Total. 
Nutritive 
ratio. 
Vegetable-ivory meal... 
Corn meal... 
1. 88 
2. 07 
0.44 
• 55 
3 - 5 8 
3 - 3 8 
9. 06 
9. OI 
14.96 
15- 01 
17-24 
1:6.57 
The calculations indicate that the herd consumed substantially like 
amounts of digestible nutrients in each of the two rations. One would 
expect a like effect on body weight and milk production. As in Experi¬ 
ment III, care was taken to feed less digestible nutrients than was 
required for maintenance and milk yield according to the Haecker stand¬ 
ard, in order to secure the maximum effect of each ration. The results 
indicate that this object was in a measure at least achieved. The herds 
uffered a loss of weight on each ration, the loss being the greater on the 
one containing vegetable-ivory meal, 95 pounds, as against 38 pounds for 
the corn-meal ration. 
64311°—16 - 2 
