Genetic Evaluation for some Growth and Body Measurements Traits in Bronze Turkey Raised in Egypt | ||||
| Journal of Animal and Poultry Production | ||||
| Article 14, Volume 8, Issue 8, August 2017, Page 303-309 PDF (248.23 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/jappmu.2017.45985 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
| Z. A. M. Sabra* ; M. A. El-Sawy; Samya E. Ibraheim | ||||
| Animal Production Research Institute, Agricultural Research Center, Ministiry of Agriculture, Giza, Egypt | ||||
| Abstract | ||||
| A total number of 50 males of bronze turkey were used in this study. Body weights (BW) in kg were recorded at 36, 40 and 44 weeks of age. Body measurements (BM) such as body length (BL), breast circumference (BC), keel length (KL) and shank length (SL) in cm were measured at 36, 40 and 44 weeks of age were also studied. Results show that means of body weight were 14.42, 13.83, 12.50 kg; 47.11, 47.11, 47.35 for BL; 39.09, 39.09, 38.43 for BC; 23.00, 23.12, 23.39 for KL and 18.96, 19.14, 18.19 for SL at 36, 40 and 44 weeks, respectively. Percentages of additive genetic variance (σ2a%) were 25.0, 22.4 and 20.0% for BW; 34.2, 34.2 and 39.3 for BL; 34.2, 34.1 and 38.9 for BC; 34.0, 34.0 and 37.3 for KL and 39.0, 34.0 and 9.8 for SL at 36, 40 and 44 weeks, respectively. While, Percentages of maternal additive variance (σ2m%) were lower than additive genetic variance (σ2a) and were 11.3, 9.7 and 6.9% for BW; 7.1, 7.0 and 10.2 for BL; 7.1, 7.1 and 10.7 for BC; 7.0, 7.0 and 10.3 for KL and 10.6, 7.0 and 12.8 for SL at 36, 40 and 44 weeks, respectively. Heritability (h2a) body weights traits had moderate heritability and were 0.25, 0.22 and 0.20. Heritability (h2a) had high heritability and were 0.34, 0.35 and 0.39 for BL; 0.34, 0.34 and 0.39 for BC; 0.34, 0.35 and 0.37 for KL and 0.39, 0.34 and 0.14 for SL at 36, 40 and 44 weeks, respectively.The ranges in predicted breeding values (PBV) for males ranged from 0.404 to 0.833 kg for BW, 4.05 to 4.89 cm for BL traits, 2.54 to 4.89 cm for BC, 0.46 to 1.78 cm for KL and 0.49 to 3.36 cm for SL traits, for dams ranged from 0.46 to 0.73 kg for BW, 3.10 to 3.22 cm for BL traits, 1.42 to 3.22 cm for BC; 0.45 to 0.77 cm for KL and 0.45 to 1.23 cm for SL traits, for sires ranged from 0.18 to 0.55 kg for BW, 1.41 to 2.99 cm for BL traits, 1.00 to 1.41 cm for BC, 0.19 to 0.51 cm for KL and 0.159 to 1.2 cm for SL traits. Estimates of Pearson correlations (rG) among predicted breeding values for most of traits studied in males of bronze ranged from low to high (but in general being high) and significantly positive. | ||||
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