90 



EXPKIILMEXT STATION. 



[Jan. 



In this ex])eriiiient the percentage of protein in the milk was 

 not determined, and the average figures secured for the exper- 

 iment immediately following were employeil. (Calculations 

 show that in the high-protein ])cri()d there was a surplus of 

 nearly fOO (97.')) per cent, of digcslilile ])r()lcin over that re- 

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

 ])rotein ]>eriod the total digestil)]e protein consumed and the 

 auioiiut required were about equal. 



Influence of Protein on the Milk Tielcl. 



Herd Results in Pounds. 



It is quite evident that the ration with th(^ large excess of 

 digestihle 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-])rotein ]ieriod 28.7 pounds, and it therefore may he 

 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 l)een fed for a long ]ieriod of time, the 

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

 fusal to eat the large amount of gluten meal. 



