225 



The mixture contains x 100=15.95% protein. 



1410 



The percentage of fat or fiber may be calculated in a like manner 

 by substituting the fat or fiber figures for those of the protein. 



CONFORMITY TO THE GUARANTEES 



The chemical analyses were made by the methods of the As- 

 sociation of Official Agricultural Chemists. Of the 522 samples 

 analyzed, 12.2 per cent contained less than the guaranteed amount 

 of protein; 10.0 per cent contained less than the guaranteed amount 

 of fat, and 3.2 per cent contained crude fiber in excess of the guarantee. 

 A comparison of these figures with those of previous years is shown 

 in Table 1. 



Resolution 16, p. 16 of the Oflficial Publication of the Association' 

 of American Feed Control Officials, reads in part "that urea is to be 

 used only in such limited quantities as to insure the total amount 

 present shall not exceed 3VT of the (grain) ration." No brand sampled 

 contained urea as one of the ingredients. 



All the states have feedingstuff laws and publish a report. It is 

 common practice to indicate by different type those brands failing 

 by an arbitrary tolerance to conform to the guarantee. There is no 

 common agreement what this tolerance should be. In this bulletin 

 the analytical figures one-half per cent or more below guarantee in 

 protein, one-fourth per cent or more below guarantee in fat, and one 

 per cent or more above guarantee in crude fiber are printed in bold- 

 face type and underlined. 



