Decreasing ruminal methane production through enhancing the sulfate reduction pathway

作     者：Yuchao Zhao Guangyong Zhao Yuchao Zhao;Guangyong Zhao

作者机构：State Key Laboratory of Animal NutritionCollege of Animal Science and TechnologyChina Agricultural University100193 BeijingChina 

出 版 物：《Animal Nutrition》 (动物营养（英文版）)

年 卷 期：2022年第9卷第2期

页      面：320-326页

核心收录：

学科分类：090502[农学-动物营养与饲料科学] 082803[工学-农业生物环境与能源工程] 08[工学] 0828[工学-农业工程] 0905[农学-畜牧学] 09[农学] 0906[农学-兽医学] 

基　　金：National Natural Science Foundation of China(Grant number 31572428). 

主　　题：Methane Rumen Sulfur Sulfate reduction pathway 

摘      要：Methane(CH4)production from ruminants accounts for 16%of the global greenhouse gas emissions and represents 2%to 12%of feed energy.Mitigating CH_(4) production from ruminants is of great importance for sustainable development of the ruminant industry.H_(2) is the primary substrate for CH_(4) production in the processes of ruminal methanogenesis.Sulfate reducing bacteria are able to compete with methanogens for H_(2) in the rumen,and consequently inhibit the methanogenesis.Enhancing the ruminal sulfate reducing pathway is an important approach to mitigate CH_(4) emissions in ruminants.The review summarized the effects of sulfate and elemental S on ruminal methanogenesis,and clarified the related mechanisms through the impacts of sulfate and elemental S on major ruminal sulfate reducing bacteria.Enhancing the activities of the major ruminal sulfate reducing bacteria including Desulfovibrio,Desulfohalobium and Sulfolobus through dietary sulfate addition,elemental S and dried distillers grains with solubles can effectively decrease the ruminal CH_(4) emissions.Suitable levels of dietary addition with different S sources for reducing the ruminal CH_(4) production,as well as maintaining the performance and health of ruminants,need to be investigated in the future.