THE EFFECT OF LIGHT ON SOME PHYSIOLOGICAL PARAMETERS IN TURKEY

Abstract

The present study was conducted at the Poultry Research Farm, Department of Poultry Production, Faculty of Agriculture, Minoufiya University, Shibin El-Kom, through year 2004 - 2005.

This experiment was designed to study the effect of different light colours Incandescent , Fluorescent, Infrared, and Ultraviolet light ) on body weight , growth rate , age and body weight at sexual maturity , blood constituents , semen production and characteristics ,bone strength,• free radical, egg production, egg quality, fertility percent% , hatchability percent % and carcass quality .

1-Body weight:

• The birds exposed to Fluorescent light was the highest body weight at all ages, and the Incandescent light (control) was the lowest body weight. • The differences between light colours in body weight were highly significant (P<0.01) at 21 and 25 weeks of age and significant (P<0.05)at 37 and 41 weeks of age .On the other hand, they were not significant at 29 and 33 weeks of age . • The differences between sex in body weights were highly significant (P<0.01). • The interaction between light colours and sex in body weight were highly significant differences(P<O.Ol) at 21,25 and 41 weeks of age. While, it was not significant at 29,33and 37 weeks of age.