seed-meals, and animal products, the extract is nearly pure fat. A 

 few ingredients such as alfalfa meal contain some ether-soluble ma- 

 terial 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 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 feedingstuff s. 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 

 Sta. Bull. 335 



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. 



Protein Requirements of Chickens at 

 Various Stages of Growth and De- 

 velopment II, 15 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 calculating 

 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. 



lbs. protein 

 Ingredients pounds used x per cent protein=furnished by ingredient 



