not been registered and which is not guaranteed in compliance with the 

 law is probably indifferent to his customer's interests in other respects. 

 He does not merit either the confidence or the patronage of the consumer. 

 The purchaser's co-operation in refusing to buy a feed which does not con- 

 form to the law in every respect will not only help in the enforcement of 

 the law but will at the same time afford the purchaser himself the protec- 

 tion of the law. If the buyer fails to assure himself that the legal require- 

 ments have been met, he accepts the feedingstuff at his own risk. The 

 terms used in reporting the chemical analysis of a feedingstuff are briefly 

 defined as follows: 



Protein is a collective term for a considerable group of compounds, 

 all of which contain nitrogen. Ingredients high in protein are usually 

 more expensive than the other ingredients, making protein the most im- 

 portant nutrient for consideration in determining the commercial value of 

 a feedingstuff. The nutritional value of the proteins varies widely; there- 

 fore 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 ex- 

 tracting the moisture-free sample with anhydrous ether. In such ingre- 

 dients 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. 



Moisture is present in all feedingstuffs. The amount varies some- 

 what with weather and storage conditions. The water content of a feed- 

 ingstuff should be kept as low as possible to prevent spoilage. 



Ash is the mineral residue remaining after the organic matter has 

 been completely removed by burning. It contains such essential consti- 

 tuents as calcium, magnesium, phosphorus and sulphur, as well as some 

 inert material of no nutritive value. 



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. 



Nitrogen-free extract includes the carbohydrates which are more 

 readily digestible, such as starch and sugars. Nitrogen-free extract is not 

 usually determined directly by analysis but is found by subtracting the 

 sum of the percentages of protein, fat, fiber, moisture and ash from 100 

 per cent. 



HOW COST OF INSPECTION AFFECTS PRICE 



The cost of a feedingstuffs inspection includes the drawing and the 

 analysis of the samples, and the publication and mailing of the annual bul- 

 letin. The funds from which these costs are paid are accumulated from 



