298 



THE FEEDING OF ANIMALS 



Founds 



Late-cut timothy hay . 10 

 CoTh silage 25 



Hominy chops . . 

 Winter-wheat bran 



Pounds 



2 

 . 3 



The averages for composition and digestibility, which 

 are as hkely as any to represent these and other mate- 

 rials, are the following: 



Table LXIII 



The first step in the calculation is to find out what 

 percentages of digestible material the components of our 

 proposed ration contain, and we shall obtain these by 

 multiplying the percentages of composition by the co- 

 efficients of digestibility and dividing the product by 

 100; that is, if timothy hay contains 5 per cent of prp- 

 tein, 45 per cent of which is digestible, then .45 of 5 will 

 be the percentage of digestible protein in the hay. In 

 this way the following figures were obtained. The per- 

 centage of digestible carbohydrates represents the sum 

 of the quantities digested from both the crude fiber and 

 the nitrogen-free extract. Tables are now published 

 which show percentages of digestible ingredients, and 

 which will render this calculation largely unnecessary: 



