100 



DAIRY FARMING 



The maintenance requirement naturally increases with 

 the size of the animal, but not in direct proportion. 



As 'a result of his investigations, Armsby suggested .05 

 pounds of digestible protein and .3 therms energy value for 

 each pound of milk. This was based upon average milk 

 containing 4 per cent of fat. The author ! has recently pro- 

 posed the following modification of Armsby's standard to 

 adapt it to the feeding of cows not producing average milk : 



Where it is not practicable to take the richness of the milk 

 of each cow into account the following may be used and the 

 requirement based upon breed average : 



92. Calculating a Ration. Let it be assumed that the 

 cow to be fed weighs 1150 pounds and produces daily 30 



1 Missouri Agricultural Experiment Station, Research Bulletin 7. 



