THE FEEDS 333 



of its cheapness, attractiveness, palatability, and, in the case 

 of yellow corn, its effect on the yolk of the egg, it should 

 form a large proportion of the ration. 



The amounts of digestible nutrients found in 100 pounds of 

 corn as determined by digestion experiments with chickens 

 are 8.4 pounds of protein, 4.4 pounds of fat, and 64.29 pounds 

 of nitrogen-free extract. It contains 1.5 pounds of ash and 

 has a nutritive ratio of 1 to 8.8 for chickens. The crude fiber 

 content is 2.2 pounds. 



Comparative Cost of Nutrients in Com, Oats, and Wheat. — 

 Taking corn at 60 cents per bushel, oats at 40 cents, and 

 wheat at 80 cents. Brown' calculated the comparative cost 

 of the organic nutrients and total dry matter for the three 

 grains, basing his calculations upon digestion trials which 

 he had made. The most marked feature is the cheaper cost 

 of all three of the nutrients from corn as compared with both 

 oats and wheat. The protein of oats costs practically 50 

 per cent, more than that of corn, and the same constituent 

 in wheat is slightly below the cost in oats. The cost of fat 

 in wheat is 50 per cent, greater than that of the same nutrient 

 furnished by corn, and the cost is yet greater when oats 

 form the source of supply. Nitrogen-free extract costs most 

 when secured from oats and least when secured from corn. 

 The exact cost in each case is shown in Table XXXI. 



Cow Peas. — Peas, as well as other leguminous seeds, contain 

 a large amount of protein. They are little used as a poultry 

 feed because of their scarcity and high price. Manufacturers 

 of prepared scratch feeds often include them in the ration 

 to narrow it and add to its attractiveness. 



The amounts of digestible nutrients found in 100 pounds of 



' @i)re^i) of ^-iiim^I Iqdustiy, BuUetiq I^o, §6, 



