Improving Production Traits for El-salam and Mandarah Chicken Strains by Crossing
 I- Estimation of Crossbreeding Effects for Growth Production Traits

Ayman El-Sayed Taha; Fawzy Ali Abd El-Ghany

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Original Article
Online Published: 01 Oct 2013

AJVS. 2013; 39(1): 18-30

Improving Production Traits for El-salam and Mandarah Chicken Strains by Crossing I- Estimation of Crossbreeding Effects for Growth Production Traits

Ayman El-sayed Taha, Fawzy Ali Abd El-ghany.

Abstract
A total number of 1833 day old chicks of mixed sex of Mandarah (MM), El-Salam (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 El-Salam strain as a sire line and Mandarah strain as a dam line resulted in SM cross of improved growth performance traits.

Key words: El-Salam, Mandarah, Crossing, Growth traits, Heterosis, Maternal effect.

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Pubmed Style

Taha AE, El-ghany FAA. Improving Production Traits for El-salam and Mandarah Chicken Strains by Crossing I- Estimation of Crossbreeding Effects for Growth Production Traits. AJVS. 2013; 39(1): 18-30.

Web Style

Taha AE, El-ghany FAA. Improving Production Traits for El-salam and Mandarah Chicken Strains by Crossing I- Estimation of Crossbreeding Effects for Growth Production Traits. https://www.alexjvs.com/?mno=41249 [Access: May 03, 2025].

AMA (American Medical Association) Style

Taha AE, El-ghany FAA. Improving Production Traits for El-salam and Mandarah Chicken Strains by Crossing I- Estimation of Crossbreeding Effects for Growth Production Traits. AJVS. 2013; 39(1): 18-30.

Vancouver/ICMJE Style

Harvard Style

Taha, A. E. & El-ghany, . F. A. A. (2013) Improving Production Traits for El-salam and Mandarah Chicken Strains by Crossing I- Estimation of Crossbreeding Effects for Growth Production Traits. AJVS, 39 (1), 18-30.

Turabian Style

Taha, Ayman El-sayed, and Fawzy Ali Abd El-ghany. 2013. Improving Production Traits for El-salam and Mandarah Chicken Strains by Crossing I- Estimation of Crossbreeding Effects for Growth Production Traits. Alexandria Journal of Veterinary Sciences, 39 (1), 18-30.

Chicago Style

Taha, Ayman El-sayed, and Fawzy Ali Abd El-ghany. "Improving Production Traits for El-salam and Mandarah Chicken Strains by Crossing I- Estimation of Crossbreeding Effects for Growth Production Traits." Alexandria Journal of Veterinary Sciences 39 (2013), 18-30.

MLA (The Modern Language Association) Style

APA (American Psychological Association) Style

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