猪肌纤维性状形成和肌内脂肪沉积的遗传机制

doi:10.16431/j.cnki.1671-7236.2021.03.016

Abstract

Abstract: In recent years,the improvement of pig muscle quality by changing muscle fiber properties and intramuscular fat content has become a hot research topic among scientists.The formation of muscle fiber property and the deposition of intramuscular fat are the result of the interaction of internal and external fact.In this paper,the genetic mechanism of muscle fiber property formation and intramuscular fat deposition in pigs was reviewed in order to find ways to control and improve pork muscle quality.The genetic mechanism of pig muscle fiber property formation and intramuscular fat deposition is very complex,regulated by the complex network of genes,transcription factors and signal pathways.The growth and development of pig muscle fibers are mainly regulated by myogenic determinant (MyoD) gene family and myostatin (MSTN) gene.AMPK/SIRT1/PGC-1α energy sensing network plays an important role in the transformation of pig muscle fiber types.The expression of genes related to fat deposition is closely related to intramuscular fat deposition.With the development of molecular biotechnology,many genes related to muscle fiber property formation and intramuscular fat deposition have been identified,which is helpful to reveal the genetic mechanism of muscle fiber property formation and intramuscular fat deposition in pigs.

Key words: pig; muscle fiber property; intramuscular fat deposition; genetic mechanism

CLC Number:

S828

OU Xiuqiong, LI Rui, ZHANG Xiaochun, ZHONG Zhengze, XIE Huadong, LI Xing, BU Lijun, JING Shaohong, PENG Hong. Genetic Mechanism of Pig Muscle Fiber Property Formation and Intramuscular Fat Deposition[J]. China Animal Husbandry and Veterinary Medicine, 2021, 48(3): 925-931.

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Genetic Mechanism of Pig Muscle Fiber Property Formation and Intramuscular Fat Deposition

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