家畜多脊椎性状研究进展

doi:10.16431/j.cnki.1671-7236.2017.08.024

摘要/Abstract

摘要：

多脊椎性状是指动物脊椎数比正常个体增加的现象，是存在于家畜中的有益突变。胸腰椎数的增加可增大家畜的体长，改变相应胴体指标，从而提高其经济价值。多脊椎性状具有较高遗传力，这为多脊椎肉用家畜的选择和培育奠定了遗传基础，使多脊椎个体在家畜遗传改良中发挥优良的生产性能成为可能。因此，家畜多脊椎性状的研究，可为多脊椎肉用家畜新品种的培育奠定理论基础。目前，已在猪、羊和牛3种家畜上发现多脊椎现象。其中，猪多脊椎性状的研究已取得了较大的进展，而牛和羊多脊椎性状的研究结果则相对有限。作者就家畜中的脊椎数变异情况、多脊椎性状对家畜生产性能的影响及其候选基因/突变位点的研究3方面内容进行阐述，并简要分析了家畜多脊椎性状研究空白及可能的研究方向。

关键词: 家畜; 多脊椎; 生产性状; 调控基因

Abstract:

Multi-vertebra trait means increase of the vertebral number in animal, which is positive for livestock. Increased thoracic-lumbar vertebral number will result in improvement of carcass traits, especially carcass length, as well as economic value. Meanwhile, relatively high heritability of multi-vertebra trait is evaluated, providing genetic basis for selecting and breeding of multi-vertebra livestock. As such, individuals with multi-vertebra trait will increase production of domestic animals ultimately. Thus, study on multi-vertebra trait provides theoretical basis for breeding of meat livestock with multi-vertebra. Hitherto, multi-vertebra trait has been found in swine, sheep and bovine. Much information has been revealed in studies on multi-vertebra trait in swine; While that is limited in sheep and bovine. This review summarized variations of vertebral number, effects of multi-vertebra trait on the production traits, and genes or mutations responsible for multi-vertebra trait of livestock animal. Further, the research gap and future direction were analyzed as well.

Key words: livestock; multi-vertebra; production traits; regulatory genes

中图分类号:

S813.25

黄洁萍, 张明明, 马云, 郝瑞杰, 雷初朝. 家畜多脊椎性状研究进展[J]. 《中国畜牧兽医》, 2017, 44(8): 2386-2391.

HUANG Jie-ping, ZHANG Ming-ming, MA Yun, HAO Rui-jie, LEI Chu-zhao. Research Progress on Multi-vertebral Trait in Livestock[J]. , 2017, 44(8): 2386-2391.

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