China Animal Husbandry & Veterinary Medicine ›› 2025, Vol. 52 ›› Issue (10): 4734-4741.doi: 10.16431/j.cnki.1671-7236.2025.10.019

• Nutrition and Feed • Previous Articles    

Research Progress on Nutritional Regulation of Intramuscular Fat Deposition in Livestock

YANG Ming1,2, ZHANG Xianglun1, JI Kaixi1, SHENG Qingkai1, ZHAO Hongbo1, WANG Zhonghua2   

  1. 1. Institute of Animal Science and Veterinary Medicine, Shandong Academy of Agricultural Sciences, Key Laboratory of Livestock and Poultry Multi-omics of MARA, Shandong Province Key Laboratory of Animal Microecologics and Efficient Production of Livestock and Poultry, Jinan 250100, China;
    2. College of Animal Science and Technology, Shandong Agricultural University, Tai'an 271018, China
  • Received:2025-01-07 Published:2025-09-30

Abstract: Intramuscular fat (IMF) is a key indicator affecting muscle quality,but due to the timing of fat deposition.IMF deposition requires a long feeding cycle and high production cost.It is a hot and difficult point in the industry to study the use of nutrition regulation means to control more fat deposition as IMF.This review briefly describes the formation and composition of IMF,the key factors regulating IMF deposition (including peroxisome proliferator-activated receptors,fatty acid-binding proteins and sterol regulatory element-binding proteins,etc.),and analyzes the effects of dietary energy level and nutritional factors such as starch type,vitamin A,amino acids,natural plants and their extracts on IMF deposition in livestock.The authors suggest using multi-omics technology to analyze the differences of lipid metabolism in different parts of adipose tissue,combined with nutritional regulation and omics technology to further clarify the molecular mechanism of various nutritional factors,and study the effect of the synergy of multiple nutritional factors,so as to provide innovative nutritional regulation and control scheme for IMF deposition in livestock,and help the production of high-quality livestock products.

Key words: intramuscular fat; fat metabolism; nutritional regulation; livestock production

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