浙江农业学报 ›› 2022, Vol. 34 ›› Issue (1): 196-203.DOI: 10.3969/j.issn.1004-1524.2022.01.22

• 综述 • 上一篇    

肌纤维类型组成对猪肌肉品质与能量代谢的影响研究进展

欧秀琼1(), 李睿1,*(), 张晓春1, 钟正泽1, 李星1, 景绍红1, 郭宗义1,2, 李兴桂3   

  1. 1.重庆市畜牧科学院 重庆市肉质评价与加工工程技术研究中心,重庆 402460
    2.内江猪研究所,四川 内江 641000
    3.绥江动物卫生监督所,云南 绥江 657700
  • 收稿日期:2021-04-02 出版日期:2022-01-25 发布日期:2022-02-05
  • 通讯作者: 李睿
  • 作者简介:* 李睿,E-mail: 16598867@qq.com
    欧秀琼(1969—),女,四川安县人,硕士,研究员,从事肉质评价与畜产品加工研究工作。E-mail: oxqiong@sina.com
  • 基金资助:
    重庆荣昌农牧高新技术产业研发专项(cstc2020ngzx0014);重庆荣昌农牧高新技术产业研发专项(cstc2019ngzx0006)

Research progress of effects of muscle fiber type composition on muscle quality and energy metabolism in pigs

OU Xiuqiong1(), LI Rui1,*(), ZHANG Xiaochun1, ZHONG Zhengze1, LI Xing1, JING Shaohong1, GUO Zongyi1,2, LI Xinggui3   

  1. 1. Chongqing Engineering Research Center of Meat Quality Evaluation and Processing, Chongqing Academy of Animal Science, Chongqing 402460, China
    2. Institute of Pig in Neijiang, Neijiang 641000, Sichuan, China
    3. Suijiang Animal Health Supervision Institute, Suijiang 657700, Yunnan, China
  • Received:2021-04-02 Online:2022-01-25 Published:2022-02-05
  • Contact: LI Rui

摘要:

肌纤维是肌肉组织的基本结构单位,通过改变肌纤维类型组成提高肌肉品质是当前的研究热点之一。成年哺乳动物骨骼肌肌纤维类型按肌球蛋白重链基因(MyHC)的多态性表达可分为Ⅰ、2a、2x、2b型4种类型,Ⅰ、2a型属偏氧化型肌纤维,2x、2b型属偏酵解型肌纤维。动物出生前,肌纤维MyHC异构体一般表达为胚胎型、胎儿型、Ⅰ和2a型;动物出生后,肌纤维数量不再增加,肌纤维的发育主要是体积增大和类型转化,肌肉中氧化型肌纤维比例总体呈下降趋势,酵解型肌纤维比例总体呈上升趋势,且遵循Ⅰ↔2a↔2x↔2b的变化规律。肌纤维类型组成与猪宰后肌肉品质的形成有着密切关系,氧化型肌纤维含量高则肌肉品质较好,酵解型肌纤维含量高则肌肉品质较差。本文综述了肌纤维类型组成对猪肌肉品质形成的影响与能量代谢机理,为通过改变肌纤维类型组成提高猪肌肉品质提供了理论依据。

关键词: 猪, 肌纤维, 肌肉品质, 能量代谢

Abstract:

Muscle fiber was the basic structural unit of muscle tissue. Improving muscle quality by changing the composition of muscle fiber types had recently been a hot topic for researchers. According to the polymorphism expression of myosin heavy chain (MyHC) gene, skeletal muscle fiber types in adult mammals could be divided into four types: I, 2a, 2x and 2b, and type I and 2a muscle fibers were partial to oxidation metabolism, type 2x and 2b muscle fibers were partial to glycolysis metabolism. Before birth of mammals, MyHC isoform was generally expressed as embryonic type, fetal type, I and 2a. After birth of mammals, the number of muscle fibers did not increase, and development of muscle fibers was mainly showed the increase in volume and type transformation, proportion of oxidation metabolism muscle fiber in muscle showed a decreasing trend, while that of glycolysis metabolism muscle fiber showed an increasing trend. Transformation of muscle fiber type followed the rule of I↔2a↔2x↔2b. The composition of muscle fiber types was closely related to the muscle quality formation of pigs after slaughter. High content of oxidation metabolism muscle fiber leaded to better muscle quality, and high content of glycolysis metabolism muscle fiber leaded to poor muscle quality. This paper expounded the effects of muscle fiber type composition on muscle quality formation and its energy metabolism mechanism in pigs, which provided a theoretical basis for improving pig muscle quality by changing muscle fiber type composition.

Key words: pig, muscle fiber, muscle quality, energy metabolism, mechanism

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