摘要
我国生猪养殖业目前主要面临两大瓶颈问题,即蛋白饲料资源匮乏和氮排放对环境的污染,而采用低蛋白日粮配方技术能有效节约养殖业对蛋白饲料资源的利用,同时也能提高猪肠道对蛋白的消化利用效率,进一步减少氮排放对生态环境的破坏。本研究团队在过去10年关于猪低蛋白日粮调控技术的研究中,建立了尤斯灌流系统评估营养物质吸收和转运能力技术、猪肠道原位结节灌流评估氨基酸净吸收量技术和猪胃和回肠末端同时安装"T"型瘘管评估胃肠道营养素消化技术等低蛋白日粮营养消化代谢测定技术方法,研究了低蛋白日粮对猪胃肠道消化系统和猪肉品质的调节作用,初步阐明了低蛋白日粮模式下氨基酸(赖氨酸和支链氨基酸)的响应机制,这些功能性氨基酸可有效改善猪的肠道、免疫系统和肌肉与脂肪组织的能量分配,其结果对于低蛋白日粮在生猪健康养殖中的科学应用具有重要的指导意义。
At present, the pig breeding industry in China is faced with two major bottlenecks, that is, the lack of protein feed resources and the pollution of nitrogen emissions to the environment. The application of low protein diet formulation technology can effectively save the utilization of protein feed resources in the pig breeding industry, improve the digestion and utilization efficiency of protein in the pig intestine, and further reduce the damage from nitrogen emissions to the ecological environment. In the past ten years, we has established the Ussing Chamber system to assess intestinal nutrient absorption and transport in vitro, intestinal situ nodule perfusion to evaluate amino acid absorption, and ＂T＂ fistula simultaneously installing in the stomach and the distal of ileum, which are used to study the nutrient digestibility in pigs. Also, we have investigated the effects of low-protein diet on gut digestive system and meat quality, and uncovered the mechanisms of amino acid metabolism （lysine and branched chain amino acids） in response to dietary protein restriction. All these results are of great significance for the scientific application of low-protein diets in the healthypig production.
作者
李凤娜
尹杰
段叶辉
何流琴
李铁军
黄瑞林
印遇龙
LI Feng-na, YIN Jie, DUAN Ye-hui, HE Liu-qin, LI Tie-jun, HUANG Rui-lin, YIN Yu-long(Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, Hunan 410125, China)
出处
《农业现代化研究》
CSCD
北大核心
2018年第6期961-969,共9页
Research of Agricultural Modernization
基金
国家重点研发计划项目(2018YFD0500405)
国家自然科学基金项目(31872370)
湖南省重点研发计划(2017NK2321)~~
关键词
低蛋白日粮
生产性能
肠道
肉品质
赖氨酸
支链氨基酸
low-protein diet
growth performance
gut
pork quality
lysine
branched chain amino acids
