The effect of light on egg production and quality of laying hens [electronic resource].

Includes references.

Two experiment, were conducted to investigate the effects of different light sources (fluorescent, incandescent, blue and day light) under different intensities (5, 25 & 50 lux) on egg production and quality of laying hens. The first experiment was carried out to study the response of laying hens to different light sources under the same intensity (25 lux), A total of 80 Lohmann brown breed hens at 35-week laying period were kept in deep liner pens and randomly allocated to four experimental groups of 20 hens each. These groups were exposed to four light sources under 25 lux. Egg quality traits of the individual hens were recorded throughout the experimental period. There was a significance effects of light sources on shell thickness, yolk colour and haugh unit, whilst were recorded no effects on other parameters. In other experiment, the correlative changes in egg quality due to different light sources under two level of light intensities in laying hens were investigated. A total 256 Lohmann brown breed hens were exposed to the same light source, but under 5 and 50 lux throughout. Data were analyzed by two factorial analyses between light sources and its intensities. In this experiment, egg quality parameters were not significantly different among the light treatments, moreover egg production did not affect by different light sources or its intensities.

Summary in Arabic.

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