Research Progress on Strategies to Reduce Methane Emissions from the Gastrointestinal Tract of Dairy Cows
Gastrointestinal methane emissions from dairy cows are one of the livestock industry's important contributions to global greenhouse gas emissions.Reducing cow methane emissions is essential to combat climate change and environmental sustainability,as well as providing an important basis for improving production efficiency.This paper systematically reviews the research progress of cow gastrointestinal methane emission from three aspects:the mechanism of methane production in dairy cows,the influencing factors of cow methane emissions,and the methane emission reduction strategy of dairy cows,and discusses the challenges and future development directions in this field,aiming to provide some reference suggestions for follow-up research and pasture carbon emission management.Reducing methane emissions from the gastrointestinal tract of dairy cows is a complex and challenging issue,there are three main paths of methane production in cows'gastrointestinal tract,and comprehensive analysis shows that the key to methane emission reduction is to block the use of hydrogen in the rumen to synthesize methane.At the same time,combined with the influencing factors of methane emissions and previous research reports,some emission reduction strategies are proposed,mainly including optimizing diet structure,improving feed quality,adding oils and fats to regulate rumen fermentation,and using methane inhibitors.Future research should focus on optimizing the combination of strategies,exploring more innovative methods to reduce cow gastrointestinal methane emissions without affecting cow growth performance and milk safety,and scientifically and effectively promoting the sustainable development of animal husbandry.
Gastrointestinal tract of dairy cowsMethane emissionsRumen microorganismsMethanobacteriaEmission reduction strategies
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