( 9 ) 



eggs having a higher protein content and a lower fat content than the 

 hens on bare yard. This would seem to indicate the egg having 

 the higher protein content, other things being equal, would produce 

 the more vigorous chick. To determine this, if possible, an experi- 

 ment was begun in feeding a ration high in protein, and, on the other 

 hand, a ration high in fat. 



The stock used was late-hatched White Leghorns. Each pen con- 

 sisted of six pullets. Each pen was furnished with one cockerel. The 

 hens were trap-nested and the eggs separately marked. The hens 

 were first fed the Cornell ration (see page 7 ) and samples of the 

 eggs of each individual taken. Then the ration was changed, one 

 pen, 26C, being fed a ration high in fat; and the other, 26D, being fed 

 a ration high in protein. 



The Effect of High Protein Content and of High Fat Content of the 



Egg Upon the Development and Strength of 



Young Chicks. 



Ration Fed Pen 26D Ration Fed Pen 26C 



Corn Meal 120 pounds 30 pounds 



Wheat Middlings 40 pounds 70 pounds 



Wheat Bran 20 pounds 30 pounds 



Alfalfa Meal 5 pounds 10 pounds 



Oil Meal 5 pounds 10 pounds 



Beef Scrap 30 pounds 70 pounds 



Salt 1 pound 1 pound 



223 pounds 220 pounds 



Nutritive Ratio 1:3. 4 1:1. 6 



Corn 300 pounds 200 pounds 



Wheat 200 pounds 300 pounds 



Nutritive Ratio : 1 : 8.5 1 : 8.0 



The eggs from a third hen, 26B, were used throughout the experi- 

 ment as a check. Regular weighings of the feed were made. 



After being on the special ration for some weeks, some of the eggs 

 were incubated in pedigree trays and the chicks leg-banded. The 

 chicks were regularly brooded and their vigor and rate of growth 

 noted. 



Samples I and II were taken while all hens were on the Cornell 

 ration. 



Samples III, IV, and V were taken while hens 26C and 26D were 

 on their respective special rations given on page 9. They were put 

 on these rations March 7th. 



Pen 26B was kept on the Cornell ration as a check. 



Pen 26C was fed on the ration high in fat. 



Pen 26D was fed on the ration high in protein. 



Eggs were placed in the incubator April 25th. 



