The mixture contains 



225 



1410 



100 15. 95% Protein. 



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 approved by the Asso- 

 ciation of Official Agricultural Chemists. 



A total of 693 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 consider- 

 able 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, at different locations 

 if possible. 



Table I shows 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 612 samples re- 

 ported in Table II 3. 4% were deficient less than 0. 5% and 5. 9% were deficient more than 0. 5% in 

 protein; 1. 8% were deficient less than 0. 25% and 2. 8% were deficient more than 0. 25% in fat; and 

 4. 7% exceeded the guarantee in crude fiber. Of 81 pet food samples 4. 9% were deficient less than 

 0. 25% and 7. 4% were deficient 0. 5% or more in protein; none were deficient less than 0. 25% and 

 8. 6% were deficient more than 0.25% in fat. No sample contained excessive crude fiber. 



Results of the analyses made for drugs and urea are listed in tables showing guarantee and 

 found figures. 



Table IV Arsanilic Acid 



Table V 3-Nitro 4-Hydroxyphenylar sonic acid 



Table VI Nicarbazin 



Table VII Sulfaquinoxaline 



Table VIII Urea 



With very few exceptions the guarantee is met within practical and effective limits. 



91 samples were drawn from bulk deliveries and 121 samples were drawn at the farm. 



81 samples of mixed feed or ingredients represented brands not registered at time of samp- 



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



ling. 



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

 ling are so identified in Tables II and III. 



Underline is used when a deficiency of more than 0. 5% below guarantee in protein, or more 

 than 0.25% below guarantee in fat or an excess of more than 1. 00% above the guarantee in crude 

 fiber occurs. 



