Calculating Rations for Farm Animals. 



103 



data for calculating how much feed should be supplied in order 

 to maintain this animal. 



For the trial ration, we decide to use 10 pounds of corn stover 

 and 10 pounds of oat straw. Let us ascertain the digestible 

 nutrients these will supply. 



Calculations for dry matter and digestible nutrients in corn stover and 



oat straw. 



Corn stover. 



In 100 

 pounds. 



Dry matter 59.5 



Protein 1.7 



Carbohydrates 32.4 



Ether extract . . 



Oat straw. 



Dry matter 90.8 100 



Protein 1.2 



Carbohydrates 38. 6 



Ether extract .8 



Arranging these in a table, with the Wolff-Lehmann standard 

 for comparison, we have: 



First trial maintenance ration for ox at rest weighing 1,000 pounds 

 Wolff-Lehmann Standard. 



The trial ration falls below the standard in everything except 

 ether extract, the deficiency being especially marked as to protein. 



