POULTRY FEEDS AND FEEDING 



the eggs. Musty and mouldy feeds will usually stop egg 

 production. 



The color of the yolk of eggs is readily affected by the 

 feed. Green feed is the material which gives yellow color- 

 ing to the yolks, while yellow corn also gives the yellowish 

 or golden color to the yolk. Oats, wheat, and white corn 

 tend to give a light or pale color to the yolks and the 

 yolks ordinarily are much yellower and deeper colored 

 in the spring and summer when the birds have range on 

 grass land, than they are in the winter months when the 

 quantity of green feed is limited. The color of yolks 

 of eggs can be readily changed by the feeding of aniline 

 dyes showing how quickly and readily this color factor is 

 affected. 



156 



