中国畜牧兽医 ›› 2025, Vol. 52 ›› Issue (3): 1057-1069.doi: 10.16431/j.cnki.1671-7236.2025.03.008

• 营养与饲料 • 上一篇    

家畜肌纤维特性的调控因素及其对肉品质的影响研究进展

冯谦洁1, 文璟2, 许艳丽3, 乐祥鹏1   

  1. 1. 兰州大学草地农业科技学院, 草种创新与草地农业生态系统全国重点实验, 兰州 730020;
    2. 甘肃省畜牧技术推广总站, 兰州 730030;
    3. 新疆畜牧科学院畜牧业质量标准研究所, 乌鲁木齐 830057
  • 修回日期:2024-11-15 发布日期:2025-02-22
  • 通讯作者: 乐祥鹏
  • 作者简介:冯谦洁,E-mail:fengqianjie@126.com。
  • 基金资助:
    国家肉羊产业技术体系(CARS-38);中央引导地方科技发展资金项目(22ZY1QH002);自治区科技支疆项目计划(2022E02141)

Research Progress on Regulatory Factors of Muscle Fiber Characteristics and Its Effect on Meat Quality of Livestock

FENG Qianjie1, WEN Jing2, XU Yanli3, YUE Xiangpeng1   

  1. 1. State Key Laboratory of Herbage Improvement and Grassland Agro-Ecosystem, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou 730020, China;
    2. Gansu Extension of Animal Husbandry Technology, Lanzhou 730030, China;
    3. Institute of Animal Husbandry Quality Standards, Xinjiang Academy of Animal Science, Urumqi 830057, China
  • Revised:2024-11-15 Published:2025-02-22

摘要: 肉品质的改良是目前家畜生产的重要目标,肌纤维作为肌肉组织的重要组成部分,其各类型占比组合对肉品质有重要的影响。成熟肌纤维由中胚层祖细胞经历成肌细胞、肌管、初级肌纤维和次级肌纤维几个发育过程形成。家畜体内肌纤维理化性质并不统一,一般依据肌纤维中肌球蛋白重链的类型对肌纤维进行分型,常规的分子分型方法即可进行肌球蛋白重链分型鉴定,这些方法将肌纤维分为Ⅰ型(氧化型)纤维和Ⅱ型(酵解型)纤维及中间类型纤维,其中Ⅰ型和ⅡA型肌纤维对肉品质的影响更为积极,且肌纤维具有较强的可塑性,受多种通路因子和表观遗传现象调控。尽管调控家畜肌纤维的通路因子较为明晰,但由于肌纤维类型性状的复杂性,仍缺乏一致认可的分子遗传标记,目前认为,SSC基因家族可能是后续进行深度挖掘验证的目标基因家族。除分子标记的筛选外,对位点的进一步挖掘和验证也是家畜肌纤维遗传改良工作的重点。

关键词: 家畜; 肌纤维类型; 肌纤维发育; 肉品质; 调节因子

Abstract: The improvement of meat quality is an important goal of livestock production.As an important part of muscle tissue,muscle fiber has an important impact on meat quality.Mature muscle fibers are formed by mesodermal progenitor cells through several developmental processes including myoblasts,myotubes,primary and secondary muscle fibers.The physical and chemical properties of muscle fibers in domestic animals are not uniform,but it is found that most studies classify muscle fibers according to the type of myosin heavy chain in muscle fibers.Conventional molecular typing methods can classify and identify myosin heavy chain.These methods classify muscle fibers into type Ⅰ (oxidized) fibers,type Ⅱ (glycolytic) fibers and intermediate types of fibers,it is found that type Ⅰ and type ⅡA muscle fibers have more positive effects on meat quality.Moreover,muscle fibers have strong plasticity and are regulated by a variety of pathway factors and epigenetic phenomena.Although the pathway factors regulating muscle fiber in livestock are relatively clear,due to the complexity of muscle fiber type traits,there is still a lack of consistent molecular genetic markers.According to the current research,SSC gene family may be the target gene family for further mining and validation research.In addition to the screening of molecular markers,the further excavation and verification of loci is the focus of genetic improvement of muscle fibers in livestock.

Key words: livestock; muscle fibre type; muscle fibre development; meat quality; regulatory factor

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