CcUculaiing 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 ascertaiu the digestible 

 nutrients these will supply. 



GalculaUons for dry matter a/nd digestible nutrients in com stover and 



oat straw. 



Com stover. 



In 100 



pounds. 



Dry matter 59.5 -^ 100 



Protein. 



1.7 ^ 100 



In 10 

 pounds. 



10 = 5.95 



10 = .17 



10 = 3.24 



10 = .07 



Carbohydrates 32.4 -h 100 



Ether extract .7 -f- 100 



Oat straw. 



Dry matter 90.8 -f- 100 X 10 



Protein 1.2 



Cai'bohydrates 38.6 -5- 100 X 



Ether extract 8 -^ 100 X 



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

 for comparison, we have: 



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

 Wolff- Lehmann Standard. 



9.08 



100 X 10 = .12 

 10 = 3.86 

 10 = .08 



The trial ration faUs below the standard in everything except 

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



