96 



STORKS AGRICULTURAL EXPERIMENT STATION. 



this plan of feeding had been strictly followed. As the cows 

 had not been accustomed to heav}' grain feeding it was thought 

 best not to increase above two pounds of this mixture, making 

 a total of 2.13 pounds of digestible protein daily. 



Table 52. 

 Summarized results with herd T. Tests Nos. 5p and 61 . 



[First test Dec. 11-22, 1900. Second test Jan. 8-19, 1901.] 



Comparing the data obtained in the two tests on herd T, it 

 will be seen that in the case of the first test the average cost of 

 the ration for the entire herd was 17.0 cents and in the second 

 test 17. 1 cents; while the average daily yields were 14. i pounds 

 of milk and .87 pound of butter in the first test, and 14.7 pounds 

 of milk and .94 pound of butter in the second test. The aver- 

 age food cost of producing 100 pounds of milk was 5.0 cents 

 less, and of one pound of butter 1.3 cents less in the second 

 test than in the first. The feeding of different amounts of 

 protein to different cows according to the yields of butter fat is 

 seen in this experiment to have been more economical than feed- 

 ing a uniform ration, rather low in protein, for the entire herd. 



Herd U. Tests Nos. 60 and 62. — Thirteen animals were 

 included in each of the tests of this experiment, twelve being 

 grade Jerseys and one a grade Holstein. The average esti- 

 mated weight of the cows was 725 pounds. Most of the cows 



* See foot note p. S4. 



