Genetic Evaluation of Growth Traits of Black Bengal Goat

Iranian Journal of Applied Animal Science

مقاله 28، دوره 3، شماره 4، اسفند 2013، صفحه 845-852   

نوع مقاله: Research/Original Article

نویسندگان

M.M. Mia^{* 1}؛ M.A.M.Y. Khandoker²؛ S.S. Husain²؛ M.O. Faruque²؛ D.R. Notter³؛ M.N. Haque¹

¹Department of Genetics and Animal Breeding, Sylhet Agricultural University, Sylhet, Bangladesh

²Department of Genetics and Animal Breeding, Bangladesh Agricultural University, Mymensingh, Bangladesh

³Department of Animal and Poultry Science, Virginia Polytechnic Institute and State University, Blacksburg, VA 240610306, USA

چکیده

Black Bengal goat is the heritage and one of the potential genetic resources of Bangladesh. Least-squares means for body weights at birth, 3, 6, 9 and 12 months of age were 1.09, 5.12, 8.02, 10.92 and 14.47 kg, respectively. Sex of the kid has significant (P<0.05) effect on body weights at 6, 9 and 12 months of age. Type of birth and parity of the dam has significant (P<0.01) effect on birth weight only, whereas season of birth affected (P<0.05) all the body weight traits. Heritability estimates for body weights at birth, 3, 6, 9 and 12 months of age were 0.45, 0.47, 0.45, 0.49 and 0.47, respectively. Genetic correlations between body weight traits ranged from 0.34 to 0.83, whereas phenotypic correlations ranged from 0.34 to 0.90. The high heritability estimates obtained for body weights indicated that mass selection would generate substantial selection responses at all stages of growth.

کلیدواژه‌ها

black bengal goat؛ fixed factors؛ genetic parameters؛ growth

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