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- Title
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.
- Authors
欧秀琼; 李睿; 张晓春; 钟正泽; 李星; 景绍红; 郭宗义; 李兴桂
- 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.
- Publication
Acta Agriculturae Zhejiangensis, 2022, Vol 34, Issue 1, p196
- ISSN
1004-1524
- Publication type
Article
- DOI
10.3969/j.issn.1004-1524.2022.01.22