THE DAIRY HERD 



37 



TABLE III. Showing Wolff-Lehman feeding stand- 

 ards. 



The standard that has generally been used as a guide 

 by feeders is that formation No. 3. Researches during 

 recent years have shown, however, that the Wolff-Leh- 

 man standard calls for too much protein. These re- 

 searches make it quite clear that the amount of protein 

 required for 22 pounds of average quality milk is 

 nearer two pounds than two and a half pounds, and until 

 the matter is definitely settled, it may be well to adopt 

 two and one-fourth pounds of protein as the standard 

 for the milk yield referred to. 



Feeding Standards as Guides. Standards for bal- 

 anced rations should always be used with considerable 

 flexibility. They should be looked upon only as guides 

 and as such are exceedingly useful. Every practical 

 feeder knows that the influence of individuality counts for 

 much in the feeding of dairy cattle. A ration that may be 

 satisfactory for one cow may not be suited to another. 



We have also to consider the source of the nutrients. 

 It is known that the digestible nutrients in coarse feeds 

 yield smaller returns, pound for pound, than those in 



