摘要
赖氨酸作为猪的一种功能性必需氨基酸,具有多种生理功能.饲粮中添加适宜水平的赖氨酸有利于提高猪的生长性能和饲料养分消化率,调控猪肠道消化酶活性和氨基酸转运载体表达,从而影响猪肠道营养物质的吸收.但赖氨酸过多会影响细胞活力,过少则会影响新陈代谢,诱发仔猪炎症反应,均不利于猪的正常生长发育.不同阶段猪对赖氨酸的需要量受猪品种类型、性别和饲养阶段等因素影响.L-赖氨酸及羧化聚-L-赖氨酸、3,3-二甲基戊二酸酐聚-L-赖氨酸和ε-聚-L-赖氨酸等赖氨酸衍生物也是很好的冷冻保存剂,在生猪产业链中发挥了极大的作用.文章综述了赖氨酸在猪养分消化率、免疫功能、肠道健康和骨骼肌生长等方面的研究进展,分析了猪生产中适宜的赖氨酸需要量及赖氨酸与L-精氨酸的互作关系,总结了 L-赖氨酸作为冷冻保存剂在猪生产上的应用研究.随着赖氨酸及其衍生物在猪生产中的广泛应用,其作用效果和机理研究也不断深入,更加精准的赖氨酸的需要量将有助于进一步改善猪生产性能,提高饲料利用率.
Abstract
Lysine,as a functional essential amino acid for pigs,has a variety of physiological functions.An appropriate level of lysine in the feed is beneficial for improving pig growth performance and the digestibility of feed nutrients in pigs,regulating the activity of digestive enzymes and the expression of amino acid transporters in the pig intestine,thereby affecting the absorption of nutrients in the pig intestine.However,an excess of lysine can affect cell vitality,while a deficiency can affect metabolism,induce inflammatory reactions in piglets,and both are not conducive to the normal growth and development of pigs.The requirement for lysine varies with factors such as pig breed type,gender,and rearing stage.L-lysine and carboxylated poly-L-lysine,3,3-dimethylglutaric anhydride poly-L-lysine,ε-poly-L-lysine and other lysine derivatives are good cryopreservation agents,and play a significant role in the pig industry chain.The article reviews the research progress of lysine in pig nutrient digestibility,immune function,intestinal health,and skeletal muscle growth,analyzes the appropriate lysine requirements in pig production and the interaction between lysine and L-arginine,and summarizes the application research of L-lysine as a cryoprotectant in pig production.With the widespread application of lysine and its derivatives in pig production,the research on its effects and mechanisms is also continuously deepening.A more precise requirement for lysine will help further improve pig production performance and increase feed utilization.
基金项目
云南省科技重点项目(202202AE090032)
州校合作项目(K2420200047)
国家自然科学基金项目(32360808)
国家自然科学基金项目(31760645)
国家自然科学基金项目(31260592)
国家自然科学基金项目(31060331)
国家科技期刊平台
NSTL
万方数据