摘要
骨骼肌是机体中最为丰富并高度特化的组织,约占全身重量的40%。大多数骨骼肌是由具有收缩、代谢、抗疲劳性以及病理生理情况下表现出不同易损性的各种肌纤维混合组成的。动物出生后肌纤维数目基本恒定,肌纤维的生长发育主要依赖于肌纤维维度的增加与类型的转化,而转化的结果将导致肌肉中的主要肌纤维类型占比发生改变,并直接影响到肉色、肌内脂肪沉积和嫩度等肉质性状,使肉质具有差异性。该文总结了肌纤维的分类及其特性,以及影响肌纤维类型转化的因素和机理,以期为骨骼肌肌纤维的分类及其转化以及家畜肉质的改善提供参考。
Skeletal muscle is the most abundant and highly specialized tissue in the body,accounting for about 40%of the body weight.Most skeletal muscle is composed of a mixture of muscle fibers with different contractile,metabolic,fatigue resistance,and pathophysiological vulnerabilities.Since the number of muscle fibers in animals has been basically constant after birth,the growth and development of muscle fibers mainly depends on the increase of muscle fiber volume and the transformation of types,and the transformation results will lead to the change in the proportion of the main muscle fiber types in the muscle,and directly affect the meat quality characteristics such as meat color,intramuscular fat deposition,and tenderness,and finally lead to differences in muscle quality.Therefore,this paper summarizes the classification and characteristics of muscle fibers,as well as the factors and mechanisms affecting the transformation of muscle fiber types,in order to provide reference for the classification of skeletal muscle fibers and the exploration of their transformation,and provide a new theoretical basis for the improvement of livestock meat quality.
作者
姬正伟
路宏朝
马海东
程佳
JI Zhengwei;LU Hongzhao;MA Haidong;CHENG Jia(School of Biological Science and Engineering,Shaanxi University of Technology,Shaanxi,Hanzhong 723001,China)
出处
《家畜生态学报》
北大核心
2023年第11期1-9,共9页
Journal of Domestic Animal Ecology
基金
陕西省科技厅项目(2018NY-157)
陕西省教育厅专项科研计划(20JK0567)。
关键词
肉用家畜
骨骼肌纤维
肌纤维类型
肌纤维转化
肉质
meat livestock
skeletal muscle fibers
muscle fiber type
muscle fiber transformation
meat quality
