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Estimates of Genetic Parameters for Body Weight and Carcass Composition in Pekin Ducks

文献类型： 外文期刊

作者： Xu, T. S. 1 ; Liu, X. L. 2 ; Huang, W. 1 ; Hou, S. S. 1 ;

作者机构： 1.Chinese Acad Agr Sci, Inst Anim Sci, Beijing 100093, Peoples R China

2.NW A&F Univ, Coll Anim Sci & Technol, Yangling 712100, Shaanxi, Peoples R China

3.Chinese Acad Trop Agr Sci, Trop Crop Genet Resource Res Inst, Danzhou 571737, Hainan, Peoples R China

关键词： Pekin duck;genetic parameter;body weight;body size;carcass composition;correlation

期刊名称：JOURNAL OF ANIMAL AND VETERINARY ADVANCES （ 影响因子：0.365； 五年影响因子：0.359 ）

ISSN： 1680-5593

年卷期： 2011 年 10 卷 1 期

页码：

收录情况： SCI

摘要： Traditional force feel technology produced excessive fat ducks and could not meet the wide range needs. This study studied the possibility breeding muscular Pekin duck. Data collection was performed in an experimental Peking duck line. At 7 weeks of age, 1,985 ducks were selected according to their pedigree to measure the traits studied in this study. Single and multiple trait analyses were used to estimated heritability and variance components by restricted maximum likelihood. Heritability estimation of Body Weight (BW), Keel Length (KL), Breast Breadth (BB) and Breast Meat Thickness (BMT) were moderated to high (0.20-0.053). The heritability for Breast Muscle Weight (BMW) and breast Meat Percentage (BMP) were 0.50 and 0.47, respectively suggesting an increase of breast meat development could be achieved by selection. The heritability of Abdominal Fat Weight (AFW), Abdominal Fat Percentage (AFP), Leg muscle Weight (LMW) and Leg Muscle Percentage (LMP) were 0.23, 0.32, 0.38, and 0.16, respectively. The genetic correlation between criterion for muscular Pekin duck. The genetic correlation between BMP and those of KL, BB and BMT were 0.69, 0.69 and 0.71, respectively. The genetic correlation between BMP and AFP was -0.03, therefore body size traits could be used as the selection index for improving the BMP and selecting for higher BMP should not decrease the leanness. In conclusion, higher BMP and lower AFP Pekin duck could be achieved.

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