Realized correlated selection response for feed efficiency of egg production under different feeding regimens in Sinai chickens
Journal Title: IOSR Journal of Agriculture and Veterinary Science (IOSR-JAVS) - Year 2018, Vol 11, Issue 12
Abstract
Recent study held at Research farm of Poultry and Fish production Department, Menoufia University, Egypt, aiming to determine the realized correlated responses in some economic traits due to selection for feed efficiency under different feeding regimens (free (i.e. once) at 08:00 am and twice (50%:50%) at 08:00 am and 03:00 pm) in local Egyptian chickens Saini/Bedouin fowl. Data on body weight at 24, 35 weeks of age, egg number during first 90 days of production, egg weight at sexual maturity and egg mass produced through first 90 days of production cycle were collected for three successive generations and statistically analyzed for all genetic groups (584 hens were used). Results indicated that, after two generations of selection for feed efficiency: - Body weight at 24 weeks and at maturity significantly decreased by selection, but, didn’t affected by regimen of feeding. - Number of produced eggs during the first 90 days of production cycle increased significantly due to line and feeding regimen effects. - Egg weight statistically increased in selected lines comparing with control lines. While, no significant effects were observed in egg weight at maturity due to feeding regimen effect. - Significant effects were noticed due to lines and feeding regimen on egg mass produced during first 90 days of egg production. So, it can be concluded that selection for feed efficiency (integrating data from relatives) improved productive performance of local chicken Sinai. Additionally, birds fed twice a day corresponded to selection better than those fed freely (once a day), consequently, we recommend to practice twice feeding regimen alongside with breeding plans aimed to improve local chickens.
Authors and Affiliations
Soltan M. E. , Farrag S. A. , Enab A. A.
Keywords
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- EP ID EP421969
- DOI 10.9790/2380-1112015359.
- Views 94
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