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 GUARANTEES 



The chemical analyses reported in this bulletin were made by methods ap- 

 proved by the Association of Official Agricultural Chemists. 



A total of 703 official samples were submitted for analysis. Samples were 

 drawn at retail outlets or at the farm after delivery. Bulk delivery of feed is 

 steadily increasing and a considerable number of bulk lots were sampled. While 

 in most cases only one sample of a brand was drawn, in several instances a brand 

 was sampled two or more times during the year, often at different locations if 

 possible. 



Table I sho^vs the percentage of samples analyzed each year since 1926 

 that did not conform to guarantees. Table II lists the analyses of official samples 

 of feed ingredients and mixed feeds. Table III lists the analyses of official samples 

 of dry and canned pet foods. Of the 627 samples reported in Table II 4.3% 

 were deficient less than 0.5% and 5.4% were deficient more than 0.5% in pro- 

 tein; 2.1% were deficient less than 0.25% and 3.7% were deficient more than 

 0.25% in fat; and 8.0% exceeded the guarantee in crude fiber. Of 76 pet food 

 samples 7.9% were deficient less than 0.25% and 10.5% were deficient 0.5% or 

 more in protein; 1.3% were deficient less than 0.25% and 10.5% were deficient 

 more than 0.25% in fat. No sample contained excessive crude fiber. 



75 samples were drawn from bulk deliveries and 120 samples were drawn 

 at the farm. 



83 samples of mixed feed or ingredients represented brands not registered 

 at time of sampling. 



30 samples of pet food represented brands not registered at time of sampling. 



Samples of lots drawn from bulk deliveries, drawn at farms or not registered 

 at time of sampling are so identified in Tables II and III. 



Bold face type and underline are used Avhen a deficiency of more than 0.5% 

 below guarantee in protein, of more than 0.25% below guarantee in fat or an 

 excess of more than 1.00% above the guarantee in crude fiber occurs. 



It will be noted in Table I that the percent deficiencies for 1958 are higher 

 in every case than last year. This trend is influenced by the fact that if a brand 

 was found deficient that particular brand was in many cases resampled and per- 



