The Relation of Food to Milk-Fat. 



63 



The records as 2)ublisliecl contain only the average data obtained 

 from eacli lot of cows. In work of this kind, tlie average record 

 of several cows is of nioi-e value than 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 given below together with their 

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



name and breed. 



Lot a : 



Garnet Valentine, A. J. C. C, 73873 . 



Belva 2d. 15-16 Holsteiu 



Julia, ^ Holstein 



Lot B : 



Cherr}'-, grade Jersey 



Dora, 15-16 Holstein 



Glista 4th, H. F. PI. B., 31408 



LotC: 



Clara, grade Jersey 



Glista Metherland, H. F. H. B., 32442. 

 May 2d, | Holstein 



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 



