20 AGRICULTURAL EXPERIMENT STATION. [Jan. 



of digestible protein, .5 pound of digestible fat and 13 

 pounds of digestible carbohydrates daily, on the basis of 

 1,000 pounds live weight. In preparing fodder rations for 

 milch cows, then, it should be our aim to so combine the 

 coarse and concentrated foods as to obtain these groups in 

 the approximately correct proportions. Variety and palata- 

 bility of food must also be taken into consideration. 



Hoiu Fodder Rations are made iq). 

 In order to show how fodder rations are put together, we 

 will construct one from English hay, corn meal, cotton-seed 

 meal and wheat bran. We must know (1) the analyses of 

 the fodders and (2) their digestibility. These data are to be 

 found in the table following : — 



Table showing Composition and Digestibility. 



The average composition and the average per cent, 

 diofestiblc of all cattle foods are to l)c found in tables at 

 the end of this report. 



Rules for compounding Properly Balanced Fodder Rations. 



1. A milch cow of 1,000 pounds live weight needs 

 approximately 2.5 })ounds of digestible protein, .5 to .75 

 pound of digestil)le fat and 13 pounds of digestible car- 

 bohydrates daily. 



