334 



APPENDIX 



For maintenance, the 900 pound cow requires nine 

 tenths as much of the digestible nutrients as the 1000 

 pound cow, or 0.63 pound of digestible protein, 6.30 pounds 

 of digestible carbohydrates, and 0.09 pound of digestible 

 fat. For the production of 30 pounds of 4 per cent milk 

 there is required an additional 1.41 pounds of digestible 

 protein, 6.90 pounds of digestible carbohydrates, and 

 0.540 pound of fat, making the standard for the 900 

 pound cow yielding 30 pounds of 4 per cent milk daily 

 consist of 2.04 pounds of digestible protein, 13.2 pounds of 

 digestible carbohydrates, and 0.63 pound of digestible fat 

 material. In order to calculate the ration that will satisfy 

 the requirements of the standard, the same method is em- 

 ployed as in determining the amount for the Wolfl-Lehmann 

 standards. 



AVERAGE DIGESTIBLE NUTRIENTS AND FERTILIZING 

 CONSTITUENTS IN AMERICAN FEEDING STUFFS 



' From "Feeds and Feeding" by Henry and Morrison. 



