July. 1938) INSPECTION OF FEEDING STUFFS 9 



NUMBER OF SAMPLES FAILING TO COMPLY WITH 



THE LAW 



Two hundred fourteen of the 471 brands analyzed failed 

 to comply with the law in every respect, violating it on 277 

 counts. About eighty per cent of the violations, however, 

 are negligible if considered on the basis of the value of the 

 feed to the purchaser. 



Eighteen brands were found more than one per cent below 

 guarantee in the most valuable constituent, protein. Twenty 

 l)rands were below guarantee more than one-half per cent 

 but less than one per cent. Fourteen brands were less than 

 one-half per cent below guarantee. The 52 brands found 

 below guarantee in protein is equivalent to ii.o per cent of the 

 brands analyzed. 



Ninety-seven brands or 20.6 per cent were below guaran- 

 tee in fat ; 46 of these w' ere less than one-fourth per cent below 

 guarantee. 



Fifty-four brands contained an excessive amount of crude 

 fiber. Seventy-one brands were below guarantee in carbohy- 

 drates. Three samples failed to carry the carbohydrates 

 guarantee. In the analysis of a feeding stuff, the percentage 

 of carbohydrates is usually determined indirectly. It is found 

 by subtracting the sum of the percentages of protein, fat, 

 moisture and ash from 100. It is obvious that an excess of 

 protein or fat over the manufacturer's guarantee decreases the 

 percentage of carbohydrates found. Nearly all of this year's 

 carbohydrates deficiencies are due to the protein or fat or both 

 exceeding the guarantee. 



In the tabulation of the analytical figures, pps. 14 to 92 

 inclusive, those figures one-half per cent or more below 

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

 guarantee in fat are printed in bold-faced type. 



Table II shows the percentage of samples failing to con- 

 torm to the guarantee in each of the last thirteen years. 



