316 
Journal of Agricultural Research 
Vol. VII, No. 7 
In order to avoid excessive feeding, a basal ration was fed which was 
rather below what each animal needed for maintenance and normal 
milk production. This was calculated on the basis of the writers' 
knowledge of the individual animal and with the aid of Haecker's stand¬ 
ards (8). The addition of the vegetable-ivory meal to this basal ration 
should therefore prove its distinctive feeding value. 
In Table XXI will be found the total yield of milk, fat, and solids 
produced by each ration. 
Table XXI .—Total yield of milk and milk ingredients in Feeding Experiment III 
BASAL RATION PLUS VEGETABLE-IVORY MEAL 
Name of cow. 
Milk. 
Solids. 
Pat. 
Butter.® 
Pounds, 
Per cent. 
Pounds . 
Per cent. 
Pounds. 
Pounds. 
Fancy III . .. 
I, 057. 2 
13. OO 
137 * 43 
4. 67 
49*37 
57-6 
Betty III. 
599*0 
13 * 55 
81. 16 
4. 72 
28. 27 
33 -o 
Ida II. 
608. 4 
14.38 
87.49 
5*33 
32.43 
37-8 
Betty. 
676. O 
12. 96 
87.61 
4*39 
29. 68 
34-6 
Red III. 
312. 5 
15. 12 
47-25 
5 * 29 
16. S 3 
18.3 
Amy. 
705*9 
I 3 * 2 7 
93 - 67 
4. 78 
33 - 74 
39-4 
Total. 
3 > 959 *o 
6 13- S° 
534 - 61 
6 4 - 79 
I90. 02 
220. 7 
BASAL RATION MINUS VEGETABLE-IVORY MEAL 
Fancy III. 
970. 1 
12. 52 
II 3 - $6 
4. 26 
41 * 33 
48. 2 
Betty III. 
477 * 1 
12.95 
6l. 78 
4. 49 
21. 42 
25.0 
Ida II. 
53 1 * 7 
12. 95 
68. 86 
5. 16 
27.44 
32.0 
Betty. 
706. 7 
13. 16 
93.00 
4. 62 
32.65 
38.1 
Red III. 
433*2 
14. 38 
62. 29 
5*25 
22. 74 
26. s 
Amy. 
707. 8 
13* 14 
93.00 
4. 84 
34. 26 
40. 0 
Total. ... 
3, 826. 6 
a 12. 87 
492. 49 
0 4. 70 
179.84 
209. 8 
a Butter equals fat plus one-sixth. 
6 Averages obtained by dividing the total weight of fat or solids by the total weight of milk. 
It will be noticed here that the ivory-meal ration produced 132.4 
pounds more milk than the other ration, an increase of 3.46 per cent. 
Inasmuch as the total feed consumed was identical in each ration with 
the exception of 470 pounds of the vegetable-ivory meal, one may con¬ 
clude in the case of this particular experiment that the 132.4 pounds of 
milk were produced by the 470 pounds of ivory meal, or that it required 
3.56 pounds to produce 1 pound of milk. 
If rather less of the basal ration had been fed and more of the vege- 
table^ivory meal, it is probable that the effect of the latter would have 
been more pronounced. 
Experiment IV.—Another feeding experiment comparing vegetable- 
ivory meal and corn meal was carried out during January, February, 
and March, 1916, with eight cows. In this case, as in Experiment T, 
