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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Abstract
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) |
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| 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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