Folder 10 The Use of Home-Grown Grains in Feeding 



the Dairy Herd. 

 Ext. Bull. 67 Turkey Production in New Hampshire, 16 pp. 



Ext. Cir. 274 Brooding and Rearing Chickens, 20 pp. 



Ext. Cir. 282 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 

 feedings tuffs. 



Inquiries occasionally are made regarding a method of calculating the 

 protein, fat or fiber content of a home mixed feed. There are tables avail- 

 able, such as those in Morrison's book "Feeds and Feeding," 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 guaran- 

 tees. The following example shows how the protein content of a feed 

 mixture may be calculated. 



Ingredients 



pounds used 



lbs. protein 

 per cent protein 

 furnished by ingredient 



225 



The mixture contains x 100=15.95% protein. 



1410 



The percentage of fat or fiber may be calculated in a like manner by 

 substituting the fat or fiber figures for those of the protein. 



CONFORMITY TO THE GUARANTEES 



The chemical analyses were made by the methods of the Association 

 of Official Agriculture Chemists. Of the 704 samples analyzed, 12.7 per 

 cent contained less than the guaranteed amount of protein; 8.8 per cent 

 contained less than the guaranteed amount of fat, and 4.3 per cent con- 

 tained crude fiber in excess of the guarantee. A comparison of these figures 

 with those of previous years is shown in Table 1 . 



All the states have feedingstuff laws and publish a report. It is com- 

 mon practice to indicate by different type those brands failing by an arbi- 

 trary tolerance to conform to the guarantee. There is no common agree- 

 ment what this tolerance should be. In this bulletin the analytical figures 

 1/2 per cent or more below guarantee in protein, 14 per cent or more below 

 guarantee in fat, and one per cent or more above guarantee in crude fiber 

 are printed in bold face type and underlined. 



8 . 



