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Effects of synchronizing starch and protein degradation on rumen fermentation, nutrient digestion and production performance in dairy cows

机译:同步淀粉和蛋白质降解对奶牛瘤胃发酵,养分消化和生产性能的影响

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摘要

Introduction The goals of ruminant protein nutrition are to provideadequate amounts of RDPforoptimal ruminal efficiency and to obtain the desired animalproductivity with a minimum amount of dietary CP (NRC,2001).Non-excessive N supply to the animal becomes more important since the amounts of N excreted in animal manure have increased markedly during recent decades,causing unacceptable air and water pollution (Hristov et al.,2005).Rumen microbes use carbohydrates as the main energy sources.If the rate of protein degradation exceeds that of carbohydrate fermentation,large quantities of N are converted into ammonia,and likewise,when the rate of carbohydrate fermentation exceeds that of protein degradation,inefficient microbial protein synthesis (MPS) may occur (Bach et al.,2005).The objectives of this study were to investigate the effects of synchronizing starch and protein degradationon rumen fermentation,nutrient digestion and production performance in dairy cows.
机译:简介反刍动物蛋白质营养的目的是提供足够的RDP以达到最佳的瘤胃效率,并以最低的日粮CP量获得所需的动物生产力(NRC,2001年)。近几十年来,动物粪便中的排泄物显着增加,造成了不可接受的空气和水污染(Hristov等人,2005)。瘤胃微生物以碳水化合物为主要能源。如果蛋白质的降解速率超过碳水化合物的发酵速率,则大量降解的氮转化为氨,同样,当碳水化合物的发酵速率超过蛋白质降解速率时,可能会发生无效的微生物蛋白质合成(MPS)(Bach et al。,2005)。淀粉和蛋白质降解同步化对奶牛瘤胃发酵,营养消化和生产性能的影响

著录项

  • 来源
    《》|2013年|272-274|共3页
  • 会议地点 Beijing(CN)
  • 作者

    J.S.Shen; J.X.Liu;

  • 作者单位

    College of Animal Sciences, Zhejiang University, Hangzhou 310058, P.R.China;

    College of Animal Sciences, Zhejiang University, Hangzhou 310058, P.R.China;

  • 会议组织
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 乳产品综合利用;
  • 关键词

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