Effect of different lighting programs on The performance of growing and breeder Japanese quail

Fayezi Gharehoghlan, M. (2015) Effect of different lighting programs on The performance of growing and breeder Japanese quail. Masters thesis, University of Zabol.

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This experiment was conducted to evaluate the effect of different photoperiods on performance of growing, laying and breeder Japanese quails. A total of five hundred 7 d Japanese quail were divided in a completely randomized design with 4 treatments including: 1- 8L:16D (8 hours of continuous light, 16 hours dark) during growing period and 16L:8D in breeding period i.e. 16 hours lighting 8 hours of darkness), 2- 23L:1D (continuous lighting by 23 hours of lighting and 1 hours darkness) in both periods of growing and breeder, 3- Equal to the natural day length during winter (8 to 9 hours in growing period and 10 to 11 hours in breeder period), 4- 8L:16D Biomitent photoperiod (8 hours lighting, 16 hours of darkness during the growing period and 16L:8D i.e. 16 hours lighting, 8 hours of darkness in the breeder period). At the end of growing period, 23-hour light treatment increased weight gain, feed intake and feed conversion ratio (P<0.01). Biomitent photoperiod significantly decreased feed conversion ratio (P<0.01). During the growing period, 23L:1D photoperiod increased the relative weight of liver and ovaries (P<0.01). Biomitent photoperiod led birds to produce the highest antibody titer against sheep red blood cells and Newcastle virus (P<0.01). In the laying period, birds grown under 23- hour light have the earliest sexual maturity among treatments in this research, however, this difference was not significant between 16-hour and Biomitent photoperiod, quails in the 23-hour photoperiod matured faster than the natural light period (P<0.01). Biomitent photoperiod increased the percentage of egg production (P<0.01). 23-hour photoperiod increased feed intake, egg mass and feed conversion ratio in the laying period (P<0.01).

Item Type: Thesis (Masters)
Uncontrolled Keywords: quail, growing period, laying period, photoperiod, Biomitent photoperiod, natural photoperiod
Subjects: S Agriculture > SF Animal culture
Depositing User: admin admin1 admin2
Date Deposited: 17 Apr 2016 08:47
Last Modified: 17 Apr 2016 08:47
URI: http://eprints.uoz.ac.ir/id/eprint/330

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