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首页> 外文期刊>Journal of Animal Breeding and Genetics >Genetic variation in the ovine uncoupling protein 1 gene: association with carcass traits in New Zealand (NZ) Romney sheep, but no association with growth traits in either NZ Romney or NZ Suffolk sheep
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Genetic variation in the ovine uncoupling protein 1 gene: association with carcass traits in New Zealand (NZ) Romney sheep, but no association with growth traits in either NZ Romney or NZ Suffolk sheep

机译：绵羊解偶联蛋白1基因的遗传变异：与新西兰（NZ）Romney绵羊的cas体性状相关，但与NZ Romney或NZ Suffolk绵羊的生长性状不相关

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摘要

The uncoupling protein 1 (UCP1) plays an important role in the regulation of lipolysis and thermogenesis in adipose tissues. Genetic variation within three regions (the promoter, intron 2 and exon 5) of the ovine UCP1 gene (UCP1) was investigated using polymerase chain reaction-single-strand conformational polymorphism (PCR-SSCP) analyses. These revealed three promoter variants (designated A, B and C) and two intron 2 variants (a and b). The association of this genetic variation with variation in lamb carcass traits and postweaning growth was investigated in New Zealand (NZ) Romney and Suffolk sheep. The presence of B in a lamb's genotype was associated with decreased subcutaneous carcass fat depth (V-GR) (p = 0.004) and proportion of total lean meat yield of loin meat (p = 0.005), and an increased proportion of total lean meat yield of hind-leg meat (p = 0.018). In contrast, having two copies of C was associated with increased V-GR (p 0.001) and proportion of total lean meat yield of shoulder meat (p = 0.009), and a decreased hind-leg yield (p = 0.032). No associations were found with postweaning growth. These results suggest that ovine UCP1 is a potential gene marker for carcass traits.
机译：解偶联蛋白1（UCP1）在调节脂肪组织的脂肪分解和生热中起重要作用。使用聚合酶链反应-单链构象多态性（PCR-SSCP）分析研究了绵羊UCP1基因（UCP1）三个区域（启动子，内含子2和外显子5）内的遗传变异。这些揭示了三个启动子变体（称为A，B和C）和两个内含子2变体（a和b）。在新西兰（NZ）Romney和Suffolk绵羊中研究了这种遗传变异与羔羊car体性状和断奶后生长的关系。羔羊基因型中B的存在与皮下car体脂肪深度（V-GR）降低（p = 0.004）和里脊肉瘦肉总产量的比例（p = 0.005）和瘦肉总比例的增加有关后腿肉的产量（p = 0.018）。相反，具有两个C副本会导致V-GR升高（p <0.001）和肩肉瘦肉总产量的比例（p = 0.009），而后腿产量下降（p = 0.032）。未发现与断奶后生长相关。这些结果表明，绵羊UCP1是cas体性状的潜在基因标记。

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