mined by calculation after the analysis for certain other constituents. 

 The usual analysis of a feed may be summarized as follows. In using 

 the following statement, all results must be expressed in terms of per 

 cent: 100 minus the sum of "moisture" + "ash" + "protein" + "fat" 

 + "crude fiber" equals the "nitrogen-free extract." Total carbohy- 

 drate equals "nitrogen-free extract" + "crude fiber." 



OTHER COMMENTS 



The use of drugs, growth stimulants and special purpose additives 

 in feeds continues to increase. The use of these materials in feeds is 

 carefully controlled by the Federal Food and Drug Administration. In 

 this way the public is assured that no animal product injurious to humans 

 reaches the market. A recent Food and Drug Administration publi- 

 cation lists approximately 40 different substances that may be used in 

 feeds for drug and antibiotic purposes. It is impossible for a small 

 laboratory to check on all of these additives. In fact satisfactory analy- 

 tical methods are not generally developed for all of them. During the 

 past year it has been possible to make only those analyses required by 

 law. 



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

 way of cutting feed costs when proper facilities are available for de- 

 livery and storage of the feed. 



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

 regarding the use of commercial feedingstuffs. The Department of 

 Dairy Husbandry and the Department of Poultry Husbandry are con- 

 tinually 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 Hampshire, Requests should be 

 addressed to : Mail Service, University of New Hampshire, Durham. 

 Ext. Bull. 67 Turkey Production in New Hampshire. 



Feeding Dairy Cattle. 

 Dairy Calves. 



Brooding and Rearing Chickens. 

 Feed Standards for N. H. Broilers. 

 Cobalt Deficiency in N. H. Cattle, Sheep and 

 Goats. 

 Sta. Bull. 419 Effect of Texture on the Nutritive Value of Con- 

 centrates for Dairy Cattle. 

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



Hampshire. 



I. Characteristics of Milling and Distribut- 

 ing Firms. 



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



Hampshire. 



II, Problems in Retail Distribution. 

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



Hampshire. 



HI. Improving the Efficiency of the Grain 

 Feeding Operation on Poultry and 

 Dairy Farms. 

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



Cattle. 



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