SELECTION OF RATIONS 



299 



396. Digestible nutrients in a given ration. — ^The 

 second step is to calculate the pounds of digestible nu- 

 trients in the quantities of the several feeding-stuffs to 

 be used. It is clear, for instance, that 10 pounds of hay 

 will contain .10 of the amoimts in 100 pounds, so we 

 simply need to multiply the percentage of digestible 

 protein and so on by 10 and divide by 100 in order to 

 learn what 10 poimds of hay will fxu-nish to the animal. 

 If we make this computation for each constituent of each 

 feeding-stuff, we reach the figiu-es of the following table: 



Several authors have published tables showing the 

 proportions of digestible nutrients in feeding-stuffs. 



