THE EFFECT OF MICROCLIMATE FACTORS ON SOME PRODUCTIVE PARAMETERS FOR LAYING HEN'S

Document Type : Research articles.

Author

Department of Animal Production, College of Agriculture, University of Alfurat, Deir Ezzour, Syria

Abstract

The research aims to study the effect of different climatic factors
(temperature, relative humidity, intensity of gases- NH3 & SO2) in layers hens
houses, on the productive parameters for Hybird (Lohman). The research was
carried out in a house for breeding layers parents in Deir Ezzour governorate
in Syria from February 2007 to June 2008. The results of the research showed
that the studied microclimatic parameters in houses of layers during the
seasons of the year, a great effect in the productive characters, was reflected
positively on the performance (production and quality) characters of layer
birds, in spite of that the mean values surpassed the allowed limits as
temperature in summer, which was over (30) C compared to the natural
average (15 – 27) C, and the relative humidity in autumn and winter which
reached a higher level than (60 – 70) %. Also the results of the research show
that the quality of producing eggs is considered on the productive characters
which is influenced greatly by microclimatic conditions, where as we find that
the index of egg's shape is considered the least traits influenced by
environment, and it's linked greater with the genotype than microclimate.
While the sexual maturity and the eggs weight are influenced by a strong link
between genotype – environment.

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