some ether soluble material which is not fat. When urea is present, the figure 

 for the percentage of fat found may be high as much as 2/10 per cent, due to 

 the slight solubility of urea in anhydrous ether. When sulphur is present, the 

 percentage of fat found is much too high, since sulphur is readily soluble in an- 

 hydrous ether. 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 direct to the farm is a practice being used to a 

 greater extent. The handling of feed in this manner brings special problems 

 to the consumer as well as to the manufacturer. Experience has shown that by 

 the use of properly designed equipment bulk delivery is satisfactory. The con- 

 sumer should carefully plan his storage bins and his method of feed distribution 

 before accepting bulk delivery of feed. Feed delivered in bulk is subject to the 

 same requirements so far as the law is concerned as feed sold in bags. The method 

 of drawing an official sample of bulk feed has been a subject of considerable 

 discussion among control officials. The feed control supervisor has drawn 

 samples from five different lots of "bulk delivery" feeds to determine whether 

 differences in analysis would show up when a sample of the same shipment is 

 drawn at different points in the loading, on the truck or unloading of the lot. 

 The analysis of these samples is shown in Table I. These analyses show that 

 a sample drawn at any one of the several points should be satisfactory in repre- 

 senting the lot. Differences between results of the several samples of the same 

 lot are no more than might be expected in drawing the same number of samples 

 from a lot of bagged feed. 



TABLE I 



ANALYSES OF SAMPLES OF "BULK DELIVERY" FEEDS 



End of screw, from mixer 



From bin into truck (Mill) 



Composite truck compartment 



Conveyor end truck at farm 



Farmer's bin 



Brand D 



PROTEIN 



19.41 



19.35 



19.01 



19.53 



19.28 



FAT 



4.26 



4.25 



4.25 



4.31 



4.26 



FIBER 



4.79 



4.76 



4.78 



4.76 



4.60 



Brand E 



PROTEIN FAT FIBER 



18.48 



18.70 



18.80 



19.01 



18.69 



3.63 



3.63 



3.60 



3.59 



3.53 



5.01 

 4.82 

 4.97 



4.95 



4.76 



