The Effect of Restricted Feeding on Several Genetically Controlled Characters in the Fowl

MUCH controversy has occurred during the past few years regarding the effect of restricted feeding upon various genetically influenced characters of the fowl. The position of those supporting the restricted feeding program is that it slows the rate of sexual maturity, allowing the birds to develop a larger body size, in turn resulting in larger initial and maintained egg weight. It is further contended that restricted feeding reduces adult mortality and increases egg production. If these claims are true, the use of a restricted feeding program would not only increase the returns from a flock but would also result in a considerable saving of feed. Each of the characteristics believed to be affected by these treatments is known to be at least partially determined by heredity. It is important to understand how the environment influences any genetic character. Therefore, it is desirable from the standpoint of the geneticist as well …