SECTION XX. 



A FEW REMARKS ABOUT FEED STUFFS 



Valuation of Feed Stuffs. It is impossible to arrive at money 

 values of feed stuffs as we can with fertilizers. The constituents 

 in mixed fertilizers, namely, nitrogen, phosphoric acid and pot- 

 ash may be purchased singly, but when we purchase feed stuffs 

 we get protein, fats and carbohydrates and cannot purchase any 

 one of these nutrients alone, except occasionally carbohydrates 

 from cane molasses. There are products on the market as 

 sugar, starch, oils, protein substances, etc., which may contain 

 single nutrients but these products are too expensive to feed live 

 stock. 



There have been many attempts made to secure a money 

 valuation for protein, fats and carbohydrates but so far all have 

 been unsuccessful. Should corn be taken as a basis and values 

 established, these values when applied to the nutrients in cotton 

 seed meal are all out of proportion to the selling price of this 

 feed. The same principle applies with the nutrients of other 

 feeds. If we calculate on the digestible nutrients or dry matter 

 in feeds, the results secured have no comparative relation. The 

 heat values of feed stuffs may be determined but a money value 

 cannot be placed on the heats of combustion, because the nutri- 

 ents act in another capacity as repair material, which value can- 

 not be ascertained in this way. 



Rebates and Comparative Unit Values. In some sections of the 

 country the purchaser buys feed stuffs on the chemical analyses 

 and when they fail to reach the guarantee, rebates are demanded 

 to make up for the deficiencies. In Louisiana the writer re- 

 ceived so many communications requesting the settlement of re- 

 bates on feeds failing to reach their guarantees, that the follow- 

 ing method was worked out and is used in the calculation of re- 

 bates. 



The nutrients considered are protein, fat and carbohydrates 

 (nitrogen free extract). To secure a basis of comparison of 

 values, according to composition, one pound of protein is con- 

 sidered of the same value as two and one-half pounds of carbo- 



