feeds continues to increase. These materials are under very careful control by 

 the Food and Drug Administration and are thoroughly tested before release for 

 general use. Feeds containing these substances must be properly labeled showing 

 what the additive is and the amount. Chemical methods have been developed for 

 the analysis of these materials but in general they are time consuming and may 

 not be as accurate as would be desired when such small amounts as a few ten- 

 thousandths of a percent are involved. An increase in staff available for inspec- 

 tion work would make it possible to check the drug guarantees on some of the 

 "medicated" feedingstuffs. 



USE OF FEEDINGSTUFFS 



The use of bulk feed deliveries continues to increase. This is a way of 

 cutting feed costs when proper facilities are available for delivery and storage 

 of the feed. 



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

 ing the use of commercial feedingstuffs. The Department of Dairy Husbandry 

 and the Department of Poultry Husbandry are continually studying feeding 

 problems. The following publications which discuss feeds and feeding from one 

 viewpoint or another are available free of charge to residents of New Hamp- 

 shire. Requests should be addressed to: Mail Service, University of New Hamp- 

 shire, Durham. 



Ext. Bull. 67 Turkey Production in New Hampshire. 



Ext. Bull. 114 Feeding Dairy Cattle. 



Ext. Cir. 282 Dairy Calves. 



Ext. Cir. 312 Brooding and Rearing Chickens. 



Sta. Bull. 401 Feed Standards for N. H. Broilers. 



Sta. Bull. 411 Cobalt Defficiency in N. H. Cattle, Sheep and Goats. 



Sta. Bull. 419 Effect of Texture on the Nutritive Value of Concentrates 

 for Dairy Cattle. 



Sta. Bull. 426 Distributing and Handling Grain-Feeds in New Hampshire. 



I. Characteristics of Milling and Distributing Firms. 

 Sta. Bull. 427 Distributing and Handling Grain-Feeds in New Hampshire. 

 IL Problems in Retail Distribution. 

 . Sta. Bull. 431 Distributing and Handling Grain-Feeds in New Hampshire. 



III. Improving the EfFiciency of the Grain Feeding Oper- 

 ation on Poultry and Dairy Farms. 



Sta. Bull. 438 The Nutritive Value of Dried Citrus Pulp for Dairy Cattle. 



Inquiries occasionally are made regarding a method of calculating the pro- 

 tein, 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 chem- 

 ical analysis of feed concentrates, roughage 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 

 iijto consideration in fixing guarantees. The following example shows how the 

 protein content of a feed mixture may be calculated: 



