106 



EXPERIMENT STATION. 



[Jan. 



The amount of hay fed to the different cows varied from 11 

 to 15 pounds; silage, from 20 to 30 pounds; bran, from 3 to 4.5 

 pounds; corn meal, from 3 to 4.5 pounds, and gluten meal, 

 from 2 to 3 pounds daily. 



Average Amounts of Drij and DigcsPihle Matter consumed by Each Cow 



daily {Potinds). 



Preliminary Period. 



Herd T. averaged 912 pounds and Herd II. 903 pounds in 

 live weight. On the basis of 1,000 pounds live weight. Herd 

 I. would be receiving 1.34 pounds of digestible protein and 

 14.9 pounds total digestible matter, and Herd II., 1.95 pounds 

 digestible protein and 15.4 pounds of total digestible matter 

 daily in the period proper. The digestible matter' was calcu- 

 lated from actual analyses of the feeds, and average digestion 

 coefficients. It seems probable that the results are a trifle low, 

 and that more material was actually digested than the calcula- 

 tions show, for the animals appeared well nourished. Herd I. 

 gaining 225 pounds, and Herd II., 215 pounds during the 

 eleven weeks of the period proper. The low-protein ration was 

 evidently somewhat deficient in protein and too wide. The 

 high-protein ration must have satisfied the protein require- 

 ments, and on the basis of 1,000 pounds live weight, it con- 

 tained .6 of a pound more of digestible protein daily than did 

 the other ration. 



