PROPERTIES AND COMPOSITION OF POULTRY FEEDS 



11 



COLONY HOUSES FOR LAYING STOCK ON FARM OF F. W. C. ALMY, TIVERTON FOUR CORNERS, R. I. 



Their importance in nutrition is evident, but the amounts 

 necessary or most economical in rations have not yet been 

 found experimentally. In the present state of knowledge 

 of the subject it appears that questions as to the use of 

 vitamines are of little if any practical interest to stock 

 feeders, because to a very great extent the conditions 

 which reduce the normal quantities of vitamines in human 

 diet, correspondingly increase the supply jn by-products 



quantities of water-soluble vitamines, but much of the 

 fat-soluble. Lard and sugar contain no vitamines. Ordin- 

 ary lean meat contains little of either kind, but liver, 

 kidney and heart have a good deal of both. Leaves and 

 roots of plants contain much water-soluble vitamines, and 

 any oil in them may contain fat-soluble vitamines. It does 

 not appear that there is any danger of poultry fed a 

 suitable variety of feeds lacking a sufficient supply of 



BUSINESS-LIKE 1 POULTRY FEEDING IT PAYS TO USE HORSE POWER WHEN THE SCALE OF 



OPERATIONS WARRANTS 



This -is a common type of feed wagon, locally called a "dough cart", long- used in Southeastern New England. 

 All the feed and water for many flocks can be carried at one load. The type of poultry farming with the equipment 

 shown on this page has been more continuously successful for large farm flocks than any other. 



of the manufacture of human foods, which are used for 

 stock feeding. Thus in the finer grades of wheat flour 

 the vitamines are largely absent, nearly all in the wheat 

 remaining in the coarser by-products. 



Two kinds of vitamines are recognized, water-solu- 

 ble and fat-soluble. The first are said to be essential to 

 sustain life, the others for the growth of the young. 

 Both are found in whole milk. Butter has insiginficant 



vitamines. Hence special attention to them is not called 

 for unless it should be clearly shown that their use in 

 some specified way gives unmistakable greater efficiency 

 in feeds, and especially in the use of cheap feeds. 



Physical Properties of Feeds 



In feeding practice it is often found that poultry 

 show decided preferences between feeds having approx- 



COOPS FOR YOUNG CHICKENS REARED WITH HENS ON FARM OF F. W. C. ALMY, 

 TIVERTON FOUR CORNERS, RHODE ISLAND 



