异亮氨酸的营养生理作用及其在猪生产中的应用研究进展

doi:10.16431/j.cnki.1671-7236.2023.12.011

Abstract

Abstract: Isoleucine,as one of the important essential amino acids for pigs,is a member of the branched chain amino acid.Isoleucine has the physiological functions of maintaining glucose homeostasis,regulating protein and lipid synthesis and catabolism.Dietary isoleucine at optimal level can promote the growth performance,improve the intestinal morphology and structure,promote the intestinal development of pigs by promoting the expression of intestinal nutrient transporters and regulating intestinal flora,improve immunity by promoting the proliferation of immune cells,increasing the expression of immune reactive substances and host defense peptides.It can also improve the carcass traits and pork quality.Under the background of high feed price and active promotion of diversified diets plan with lower protein and lower soybean meal,the application of isoleucine in pig nutrition has attracted much attention,the biosynthesis technology of L-isoleucine and balance of isoleucine and other amino acids especially branched chain amino acid in lower protein and lower soybean meal diets.In addition,the nutritional requirements of pigs for isoleucine in different physiological stages,and the ileal digestibable isoleucine parameters of common feed materials and unconventional feed materials and their dynamic prediction models are worthy of further study in future production and application.Thus,in this paper,the nutritional physiological effects of isoleucine and its nutritional requirements and application in pig production were reviewed,in order to provide reference for precise nutrition supply of pigs and cost reduction and efficiency increase in pig breeding in the future.

Key words: isoleucine; pigs; growth performance; gut health; immune function

CLC Number:

S815.1

LU Qi, YANG Xuefen, WANG Li, ZHU Cui. Research Progress on Nutritional Physiological Effects of Isoleucine and Its Application in Pig Production[J]. China Animal Husbandry & Veterinary Medicine, 2023, 50(12): 4886-4898.

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Research Progress on Nutritional Physiological Effects of Isoleucine and Its Application in Pig Production

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