摘要
奶牛瘤胃产生并释放的甲烷,大约占饲料总能损失的5%-9%,一头奶牛每年产大约60-160kg甲烷。瘤胃中的甲烷产生菌通过获得氢把CO2还原成CH4,瘤胃中氢浓度受化学极性基团和饲料中的植物化学活性成份的调节,宿主动物和共生微生物维持瘤胃pH在6-7的范围,瘤胃中的代谢氢处理是由有效的瘤胃生态系统的适应和调节。该综述将探讨涉及这些生化过程的化学竞争和影响瘤胃细菌产生甲烷的因素。
Methane is emitted from the rumen of dairy cattle,contributing to a loss of 5%-9% of dietary gross energy,which are representing 60-160kg/yr.CO2 in the rumen is reduced to CH4 by methanogen through accepting hydrogen proton and electron.Hydrogen concentrations in the rumen are manipulated by the chemical radicals and phytochemical active compounds,being stabilized by the host animals and microbial symbionts for pH of rumen.The redundant H2 disposal in the rumen is accustomed to the efficient rumen ecosystem.This review will discuss the influencing factors involving in their biochemical pathways for metabolic competition and methanogenesis of the bacteria in rumen.
出处
《畜牧兽医杂志》
2016年第6期55-58,60,共5页
Journal of Animal Science and Veterinary Medicine
