35 2 



CLEAN MILK 



The new standards for feeding "(which have been used for some 

 years in estimation of food requirements for man) demand: I. The 

 proper proportion and amount of dry matter. 2. Of digestible 

 protein. 3. The proper energy value stated in calories or therms for 

 lbs. of live weight per diem for maintenance, for growth, fattening, 

 work, milk, etc. 



The nutrient requirements are 1 lb. of digestible protein for each 

 8 to 10 lbs. of carbohydrates and fat, and 20 to 30 lbs. of dry matter 

 per diem for each adult cow. 



It has been found that in milk production, for each pound of milk 

 produced, there is required (in addition to the requirements for main- 

 tenance) 0.3 therm in energy value in the food and 0.05 pound of 

 ^digestible protein. Now to put this knowledge into use. 



TABLE I. 

 Maintenance requirements of cattle and horses, per day and head. 



