OdUmUUing Bationa for Farm Animals. 



103 



data for calctQating haw much feed should be sapplied in order 

 to mamtain this animal. 



For the trial ration, we decide to nse 10 pounds of com stover 

 and 10 ponnds of oat straw. Let ns ascertain the digestible 

 nutrients these will supply. 



Calculations for dry matter and digestible nutrients in com stover and 



oat straw. 



Corn Btover. 



In 100 In 10 



pounds. " pounds. 



Dry matter 59.5 ^ 100 X 10 = 5.95 



Protein. 1.7 h- 100 X 10 = .17 



Carbohydrates 32.4 -h 100 X 10 = 3.24 



Ether extract 7 -i- 100 X 10 = .07 



Oat straw. 



Dry matter 90.8-4- 100 X 10 = 9.08 



Protein 1.2 -h 100 X 10 = .12 



Carbohydrates. 38.6 h- 100 X 10 = 3.86 



Ether extract .8 ^ 100 x 10 = .08 



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

 for comparison, we have: 



Mrst trial mairdenance 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. 



