Ingredients high in protein are usually more expensive than the other 

 ingredients, making protein the most important nutrient for consideration 

 in determining the commercial value of a feedingstuff. The nutritional 

 value of the proteins varies widely ; therefore, a feedingstuff should contain 

 protein from several sources to insure inclusion of all essential types. 

 FAT is separated from the other components of a feedingstuff by extract- 

 ing the moisture-free sample with anhydrous ether. In such ingredients as 

 the cereals, the seed-meals, and animal products, the extract is nearly pure 

 fat. A few ingredients such as alfalfa meal contain some ether soluble 

 material which is not fat. If urea is present in a feed, the fat figure may 

 be somewhat high due to the slight solubility of urea in anhydrous ether. 

 When sulphur is present, the "ether extract" or fat found is much too high 

 since sulphur is readily soluble in anhydrous ether. CRUDE FIBER is 

 composed of cellulose and related compounds. Since crude fiber has little 

 feeding value, the law requires that the maximum fiber be guaranteed 

 rather than the minimum as in protein and fat. 



Bulk delivery of feed directly from the mixer to the farm continues to 

 increase in volume. The special problems involved in handling this type 

 of delivery by both the manufacturer and consumer can be satisfactorily 

 met. The consumer, considering the acceptance of delivery of feed in bulk, 

 should carefully consider his method of storage and the distribution of feed 

 in his management program. Information is available from both the Ex- 

 periment Station and the manufacturers concerning the construction of 

 bins to receive bulk delivery of feeds. The analysis of several samples 

 drawn by the feed control supervisor reported in Bulletin 403, 1953 Inspec- 

 tion of Commercial Feedingstuffs, indicate that a satisfactory sample of 

 bulk delivered feeds can be obtained at any one of several points. Further 

 evidence was obtained on this point this year. A series of three samples 

 of each of two brands of feed were drawn by the feed control supervisor 

 representing a lot of each of two types of feed delivered in bulk. The new 

 pneumatic unloading method was used in these cases. The results obtained 

 are shown in Table I. These results confirm previous finding, that is, with 

 reasonable judgment a satisfactory sample of bulk delivered feeds can be 

 obtained at any one of several points in the handling of bulk feeds. 



TABLE I 



The difference between results of the analysis of the samples of the 

 same lot in these cases are no more than would be expected in analyzing 

 several samples drawn from the same lot of bagged feed. 



