I02 



STORRS AGRICULTURAL EXPERIMENT vSTATION. 



pounds per cow daily. In this way the protein was increased 

 approximateh" .2 of a pound for the different groups according 

 to the yields of butter fat. But the nutritive ratio was not 

 decreased as rapidly by this method of feeding as in the cases 

 where a protein grain mixture was used. 



Table 55. 

 Summarized 7'e suits xvUh herd IV. Tests A^os. 64. and 66. 



[First test Feb. i8-Mar. 2, 1901. Second test Mar. 18-30, 1901.] 



The results of this test show that when the ration contained 

 over 2.5 pounds of protein per day the food cost of milk and 

 butter was relatively greater than when 2.4 pounds of protein 

 were used. This would .seem to indicate that at the prices 

 existing during the period covered by these tests the limit of 

 protein feeding for the most profitable results is about 2.5 

 pounds daily. 



SUMMARY. 



/^our herds of cojvs zvere studied during the winter of igoo- 

 igoi. Tivo tests zvere made with each herd, coveriiig periods of 

 twelve days each in all except one test, which lasted eleven days. 



In the first test the eiitire herd was fed the ration in use by the 

 dairyman, which visually was nearly the same for all cows of the 

 herd. The amount of proteifi in the ratioti varied for the differ- 

 ent herds from i."/^ to 2.4.0 pounds per cow per day. 



* See foot note p. 84. 



