肌内脂肪对牛背最长肌品质的影响及肌内脂肪沉积机制的研究

  • 毛衍伟 ,
  • 张一敏 ,
  • 朱立贤 ,
  • 董鹏程 ,
  • 梁荣蓉 ,
  • 戴瑨 ,
  • 罗欣
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  • (山东农业大学 食品科学与工程学院,山东 泰安,271018)
博士,副教授(毛衍伟副教授和罗欣教授为共同通讯作者,E-mail:maoyanwei@163.com;luoxin@sdau.edu.cn)。

收稿日期: 2017-12-06

  网络出版日期: 2018-12-25

基金资助

国家自然科学基金(31301514);现代农业产业技术体系建设专项资金资助-肉牛(CARS-37);山东省现代农业产业技术体系创新团队建设专项资金(SDAIT-09-09);山东省“双一流”奖补资金(SYL2017XTTD12)

Effect of intramuscular fat on beef Longissimus Dorsi quality and its deposition mechanisms

  • MAO Yan-wei ,
  • ZHANG Yi-min ,
  • ZHU Li-xian ,
  • DONG Peng-cheng ,
  • LIANG Rong-rong ,
  • DAI Jin ,
  • LUO Xin
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  • (College of Food Science and Engineering, Shandong Agricultural University, Taian 271018, China)

Received date: 2017-12-06

  Online published: 2018-12-25

摘要

该研究选择脂肪含量不同的12头肉牛分成高脂肪含量组和低脂肪含量组,测定了2组肉牛背最长肌的品质,通过基因组重测序对高脂肪含量和低脂肪含量的肉牛背最长肌进行分析,在全基因组范围内对与肌内脂肪沉积相关的基因进行筛选,得到26个多态性存在差异的基因,并进行了生物信息学分析。结果表明,2组肉牛背最长肌除脂肪含量及伴随的水分含量显著差异外,其余各品质差异不显著;能量代谢基因、消化吸收基因、脂肪形成基因、肉牛嗅觉基因的多态性变化是影响肉牛肌内脂肪沉积的关键,调控上述基因可能成为控制肉牛肌内脂肪沉积能力的潜在方法。本研究从全基因组水平上阐明了同一品种的肉牛在相同饲养条件下表现出不同大理石花纹沉积能力的原因,明确了肉牛肌内脂肪沉积机制并为其调控指出了研究方向。

本文引用格式

毛衍伟 , 张一敏 , 朱立贤 , 董鹏程 , 梁荣蓉 , 戴瑨 , 罗欣 . 肌内脂肪对牛背最长肌品质的影响及肌内脂肪沉积机制的研究[J]. 食品与发酵工业, 2018 , 44(11) : 89 -96 . DOI: 10.13995/j.cnki.11-1802/ts.016449

Abstract

The study selected 12 cows which divided into high fat group (HGP) and low fat group (LFG). The quality of Longissimus Dorsi was investigated and whole-genome re-sequencing was performed. Genome polymorphism was analyzed in order to find out the genes related to intramuscular fat deposition. The genes polymorphism and their relationship to intramuscular fat (IMF) were investigated. The 26 genes related to intramuscular fat deposition were identified with different gene polymorphism. The bio-informatics analysis indicated that the polymorphism of genes related to energy metabolism, digestive absorption, lipogenesis and olfactory might act as key roles in regulating intramuscular fat deposition. The study provided a potential method to regulate intramuscular deposition of cow. The results identified the reason why cow with the same breed and feeding conditions had different capability of IMF deposition. The study provides a reference for further research on regulation of beef intramuscular fat deposition.

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