Some aspects of poultry behaviours due to variation in genetic make up

Abstract

Measures of performance. have play a prominent role in evaluation, the efficiency of applied husbandry system. This study was planned to investigate the effect of stocking system of two purebreds of laying hen (Fayomi and White Leghorns) housed singly or mixed on the behavioural patterns, productive and reproductive traits, immune response and physiological changes in hens from 24 % to 32 weeks of age. Moreover, to clarify the effect of sex isolation on mating performance of both male and female birds from 36 to 44 weeks of age. The obtained results revealed that: 1.Chickenbehaviour: 1. Effect ofstocking system: 1. Stocking system had a significant effect on feeding behaviour with highest percentages of birds engaged in feeding (20.49±1.42) for group 6 (Female I. Fayomi and Female Leghorn) and the lowest (11.21 Leghorn and Female Leghorn);