Improving Production Traits for El-salam and Mandarah Chicken Strains by Crossing 1- Estimation of Crossbreeding Effects for Growth Production Traits
Abstract: A total number of 1833 day old chicks of mixed sex of Mandarah (MM), ElSalam (SS) were used as well as their crosses and reciprocal crosses. Body weight (BW), daily weight gain (WG), relative growth rate (RGR), feed consumption (FC), feed conversion ratio (FCR), shank length (SL), keel length (KL) and body circumferences (BC) were evaluated among the four studied lines form hatch up to 20 weeks of age. SM cross showed superiority of BW with positive heterosis percentages; while negative heterosis percentages were recorded for MS cross. Also, SM cross recorded the highest WG at 4, 12 and 16 weeks of age with high positive heterosis percentages up to 16 weeks of age, high overall RGR from 0-8 and 0-12 weeks of age with corresponding heterosis percentages (0.46 and 0.73%). SM cross showed the highest FC compared to other lines and recorded positive heterosis percentage. On the other hand, SM cross and SS line showed the highest significant differences for SL and KL at 4, 8 and 12 weeks of age with positive heterosis percentages for SM line, but no effect for crossing present on BC. Positive maternal effects were recorded for most of the growth traits. It was concluded that, using EISalam strain as a sire line and Mandarah strain as a dam line resulted in SM cross of improved growth performance traits.
Publication year 2013
Pages 18-30
Availability location معهد بحوث الانتاج الحيوانى- شارع نادى الصيد- دقى- جيزة
Availability number
Organization Name
Country Egypt
City الاسكندرية
serial title Alexandria Journal of Veterinary Sciences
ISSN 0110-2047
Volume 39 .
Author(s) from ARC
External authors (outside ARC)
    ايمن السيد حسن طه كلية الطب البيطرى - جامعة الأسكندرية
Agris Categories Animal husbandry
AGROVOC
TERMS		 Body weight. Chicks. Feed consumption. Feed conversion efficiency. Growth rate. Heterosis breeding. Weight gain.
Proposed Agrovoc shank length;keel length;
Publication Type Journal
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