Feeding Standards. 247 



from another. In addition, the relative amounts and kinds of 

 ash must be considered. The value of wheat bran does not re- 

 side wholly in its protein content, but partly in its laxative prop- 

 erties, which are due to a specific constituent, known as phytin. 

 The superior value of legume hays must be attributed, in part, to 

 their high lime content. This is particularly true when used for 

 growing animals and milch cows. All these are factors to be 

 reckoned with, but until they are completely worked out and 

 catalogued, the student will still find the standards of Wolff or 

 Armsby helpful in formulating rations. 



