8o 



FEEDING FARM ANIMALS 



How to Establish a Standard. It will be observed 

 that no definite standard is provided. It all depends 

 on what the maintenance requirements are, what 

 amount of milk the daily yield is, and on the per 

 cent of butter fat contained. Assuming that a cow 

 weighing 1,000 pounds daily gives 22 pounds of 

 milk, which tests 5 per cent fat, what will be the 

 actual requirements of digestible nutrients accord- 

 ing to the Haecker standard? The first step is to 

 consult the table for the nutrient allowance as given 

 for milk of the grade under consideration. This 

 we find to be as follows: Protein, 0.052; carbohy- 

 drates, 0.27; and fat, 0.021. But the cow gives 22 

 pounds daily, in which case the quantities for one 

 pound will be multiplied by 22 to meet the real daily 

 production. The form is as follows: 



In 1 In 22 



pound pounds 



Protein 051 x 22 = 1.12 



Carbohydrates 27 x 22 = 5.95 



Fat 021x22= .46 



These amounts added to what is required for the 

 maintenance of a cow weighing 1,000 pounds and 

 giving 22 pounds of five per cent milk are shown in 

 the table following: 



