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 

 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 

 extracting 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. When urea is 

 present the figure for the percentage of fat found may be high as 

 much as two-tenths 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 anhydrous 

 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. 



This bulletin is concerned with the enforcement of the feeding- 

 stuff law. It is not within its scope to make recommendations regard- 

 ing the use of commercial feedingstuffs. The Department of Dairy 

 Husbandry and the Department of Poultry Husbandry are continuously 

 studying feeding problems. The following publications of these 

 departments are free to residents of New Hampshire. Address your 

 request to Mail Service, University of New Hampshire, Durham, New 

 Hampshire. 



Ext. Cir. 195 Adjusting Feed Costs to Reduced Milk Incomes. 4 pp. 



Ext. Cir. 208 Feeding Dairy Calves and Heifers. 6 pp. 



Folder 10 The Use of Home-grown Grains in Feeding the Dairy 



Herd. 



Press Bull. 100 Home-Grown Dairy Feeds. 1 p. 



Ext. Bull. 67 Turkey Production in New Hampshire. 16 pp. 



Ext. Cir. 158 Feeding Chickens. 18 pp. 



Ext. Cir 250 The Home Poultry Flock. 12 pp. 



Sta. Bull. 312 Protein Requirements of Chickens. 20 pp. 



Sta. Bull. 335 Protein Requirements of Chickens at Various Stages 



of Growth and Development II. 15 pp. 



Sta. Cir. 52 Growth and Feed Standards for New Hampshire. 



8 pp. 



Sta. Cir. 56 Fine Verus Coarse Grit as a Feed Ingredient for 



Poultry. 8 pp. 



