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. 



It is not within the scope of this bulletin to make recommenda- 

 tions regarding the use of commercial feedingstuflfs. The Depart- 

 ment of Dairy Husbandry and the Department of Poultry Husbandry 

 are continuously studying feeding problems. The following publica- 

 tions of these departments are free to residents of New Hampshire. 

 Address your request to Mail Service, University of New Hampshire, 

 Durham, New Hampshire. 



Foldei 10 



Ext. Bull. 67 



Ext. Cir. 158 

 Ext. Cir. 250 

 Sta. Bull. 335 



Sta. Cir. 56 

 Ext. Cir. 282 



The Use of Home-grown Grains in 

 Feeding the Dairy Herd. 



Turkey Production in New Hampshire, 

 16 pp. 



Feeding Chickens, 18 pp. 



The Home Poultry Flock, 12 pp. 



Protein Requirements of Chickens at 

 Various Stages of Growth and Del- 

 velopment H, 15 pp. 



Fine Versus Coarse Grit ^s a Feed In- 

 gredient for Poultry, 8 pp. 



Dairy Calves. 



While the word feedingstuff does not appear in all the above titles, 

 no publication is included which does not discuss some aspect of the 

 use of feedingstuffs. 



Inquiries are made occasionally regarding a method of calculat- 

 ing the protein, fat or fiber content of a home-mixed feed. There are 

 tables available, such as those in Morrison's book "Feeds and Feed- 

 ing," which give the average chemical analysis of feed concentrates, 

 roughages and silages. It should be pointed out that the chemical 

 analysis of a particular lot of an ingredient may be somewhat above 

 or below the average figure shown in the table. This fact must be 

 taken into consideration in fixing guarantees. The following example 

 shows how the protein content of a feed mixture may be calculated. 



Ingredient 



pounds used 



lbs. protein 

 per cent proteinnfurnished by ingredient 



Total mix 



1410 lbs. 



contains 



225 lbs. protein 



8 



