The R?:latiox of Food to Milk-Fat. 



63 



The records ab published contain only the average data obtained 

 from each lot of cows. In work of this kind, the average record 

 of several cows is of more vahie tiian individual records taken 

 singly, and it is from the average record that conclusions must be 

 drawn. For this reason and in order to eliminate many long tables 

 from these pages, the individual records are not published. 



The First Experiment 1895-6. 



This feeding trial began November 6, 1895, and continued for 

 twenty-two weeks until April 7, 1896. It was conducted by James 

 M. Johnson then a graduate student in the college of agriculture. 

 The names of the cows used are mven below toocether with their 

 breed, age, number of days in milk and weight. 



NAME AND BREED. 



Lot a : 



Garnet Valentine, A. J. CO., 73873 



Belva 2d, 15-16 Holstein 



Julia, I Holstein 



LotB: 



Cherry, grade Jersey 



Dora, 15-16 Holstein 



Glista 4th, H. F. H. B., 81408 



Lot C: 



Clara, grade Jersey 



Glista ISetherland, H. F. H. B., 32442 

 May 2d, | Holstein 



Age. 



.a . 



992 



1088 

 1370 



849 

 1213 

 1239 



1063 

 1127 

 1223 



Gain. 



119 

 197 

 174 



128 



67 



175 



141 



89 



206 



The daily rations of the cows in each lot were made up as 

 follows : 



Lot A: 



Grain mixture 8 to 13 pounds. 



Gluten feed 3 parts. 



Oat chop 2 parts. 



Cotton-seed meal 2 parts. 



Linseed oil meal 1 part. 



Corn silage 40 to 45 pounds. 



Clover hay 8 to 10 pounds. 



Nutritive ratio 1:4.5 



