RESPONSE TO SELECTION FOR BODY WEIGHT AND EGG WEIGHT IN CHICKENS

Abstract

W E L L conducted selection experiments are useful in testing the validity of modern selection theory.Observed genetic changes from selection frequently show poor agreement with expectation.The relationship of selection to the genetic variance composition of a population, to correlated responses, to plateaued populations and to selection limits are problems not yet well understood.This study reports the resul-s of a %way selection experiment for both body weight and egg weight in White Leghorns.Body weight is highly responsive to selection in chickens (