410 COMPUTING THE RATION FOR FARM ANIMALS 



Computing on Basis of Quality and Quantity of Milk 



" The quality of milk is quite as important a factor in formulat- 

 ing a feeding standard or guide to feeding practice, as quantity of 

 milk yielded," according to Haecker (Minn. Bull. 79). " It would 

 seem quite as consistent to feed an animal food regardless of its 

 composition as to feed an assumed ration regardless of the composi- 

 tion of the product which is to be elaborated from the nutrients of 

 the food." 



It is probably not possible to " feed fat into milk," provided the 

 animal is otherwise well nourished, but the Haecker standards are 

 not founded on that idea, but on the assumption that the greater 

 the yield of butter-fat the greater should be the feed of maintenance. 

 This method is sometimes used instead of the German method 

 (p. 413), in figuring rations for dairy cows. 



Net nutrients used by mature cows for the production of one pound of milk 

 testing a given per cent butter-fat (Haecker) 



