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 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. Ad- 

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

 Durham, New Hampshire. 



Folder 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 Feed- 

 ing 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 De- 

 velopment II, 15 pp. 



Fine Versus Coarse Grit as 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 occasionally are made regarding a method of cal- 

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

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

 Feeding," which give the average chemical analysis of feed concen- 

 trates, roughages, and silages. It should be pointed out that the 

 chemical analysis of a particular lot of an ingredient may be some- 

 what 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 protcin=furnished by ingredient 



