56 



EXPERIMENT C. 

 12 Weeks, Nov. 1, 1904 -Jan. 23, 1905. 



EXPERIMENT D. 



12 Weeks, Feb. 1 April 25, 1905. 



Same cows. Rations reversed. 



The two series of experiments dealt with had for their 

 special object to discover whether it is profitable to use a 

 heavy ration of concentrated food for dairy cows as against 

 a moderate allowance, having regard to both the quantity 

 and quality of the milk produced. Two different sets of 

 cows were tested at different times, each set being under 

 experiment for 24 weeks. Each set consisted of two lots of 

 five cows, and each lot was in turn placed on a heavy and a 

 moderate ration of concentrated food for a period of 12 weeks. 

 The trials from beginning to end covered a period of 48 weeks. 

 The following general conclusions may be drawn : 



(1) A heavy ration, of not less than 12 lb. of concentrated 

 food per head per day, may cause an increase in the milk 

 yield, as compared with a moderate ration, provided the cows 

 are not far advanced in the lactation period (Tables II. and 



