90 



EXPERIMENT STATION. 



[Jan. 



In this experiment the percentage of protein in the milk was 

 nut determined, and the average figures secured for the exper- 

 iment innnediatelj following were employe<l. Calculations 

 show that in the high-protein period there was a surplus of 

 nearly 100 (97.5) per cent, of digestible protein over that re- 

 quired for maintenance and milk production, while in the low- 

 ])rotcin period the tntal digestil)le jn^otein consumed and the 

 amount required were about equal. 



Influence of Protein on the Milk Yield. 



Herd Results in Pounds. 



It is quite evident that the ration with the large excess of 

 digestible protein exerted a marked influence on the milk-secret- 

 ing organs, causing an increase of approximately 15 per cent, 

 in the milk yield. The average daily milk product per cow 

 during the high-protein period was 27.2 pounds, and during 

 the low-]U'oteiii ])eriod 23.7 pounds, and it therefore may be 

 said that both rations produced a fair yield. The period was 

 too short to note the effect of the larger amount of protein on 

 the general condition of the animal; it is believed, however, that 

 if such an amount had been fed for a long period of time, the 

 result would have been over-stimulation, indigestion and a re- 

 fusal to eat the large amount of gluten meal. 



Effect of the T! at ions on the Composition of the Milk (Per Cent.). 



