Detection of quantitative trait loci for body weights and conformation traits in Beijing ducks.
Detection of quantitative trait loci for body weights and conformation traits in Beijing ducks.
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DOI：
10.1111/j.1365-2052.2007.01637.x
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发表时间：
2007-10
期刊：
影响因子：
2.4
通讯作者：
Yinhua Huang;C. Haley;Shengqiang Hu;J. Hao;Ch. Wu;Ning Li
中科院分区：
文献类型：
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作者：
Yinhua Huang;C. Haley;Shengqiang Hu;J. Hao;Ch. Wu;Ning Li
对北京鸭的体重和体型性状进行了QTL定位。性状包括孵化时和1-7周龄时的体重（BW）; 7周龄时的体长（BL）、龙骨（KBL）、胫长（SL）和颈长（NL）; 7周龄时的胸宽（BTW）;以及7周龄时的胫围（SG）和胸围（BG）。利用半同胞分析和多QTL模型，研究了95个微卫星标记与表型性状的连锁关系。结果表明，在1991、1992、1996和19912中共检测到6个影响体重和体型的QTL。影响一个体重性状和一个体型性状的全染色体显著性QTL分别定位在E14和E110上。在7个连锁群（101、102、103、104、106、1010和1012）中，共检测到12个与6个体重性状和4个体型性状相关的全染色体QTL。此外，在21和73 cM的QTL在2006年共同影响SG和解释10.6%的表型变异。本研究首次发现了影响鸭体重和体型性状的QTL，为进一步研究鸭体重和体型性状的遗传结构奠定了基础。
Quantitative trait loci (QTL) for body weights and conformation traits were detected in Beijing ducks. Traits included body weights (BW) at hatching and at 1-7 weeks of age; lengths of the body (BL), keel bone (KBL), shank (SL) and neck (NL) at 7 weeks of age; width of breast (BTW) at 7 weeks; and girths of shank (SG) and breast (BG) at 7 weeks. Using a half-sib analysis with a multiple-QTL model, linkage between the phenotypic traits and 95 microsatellite markers was studied. Six genome-wide suggestive QTL for three body weights and two conformation traits were identified in CAU1, CAU2, CAU6 and CAU12. Chromosome-wide significant QTL influencing one body weight trait and one conformation trait were located in CAU4 and CAU10 respectively. Twelve chromosome-wide suggestive QTL for six body weight traits and four conformation traits were found in seven linkage groups (CAU1, CAU2, CAU3, CAU4, CAU6, CAU10 and CAU12). In addition, the QTL in CAU6 at 21 and 73 cM jointly affected SG and explained 10.6% of the phenotypic variation. This study provides the first evidence for QTL involved in body weights and conformation traits in ducks, and will stimulate further investigations into the genetic architecture of these traits in this species.