Some Approaches for Reducing Methane Emissions from Ruminants

摘要

Fermentation of the animal feed liberates greenhouse gases including carbon dioxide,methane, and nitrous oxide (CO2, CH4, and N2O) which are not environmental benign.Methanogenesis is a process resulted from the digestion of the food to discard the metabolic hydrogen in the rumen system.Subsequently, myriad efforts have been dedicated to reduce the methanogenesis process.Inophores, plant bioactive compounds, essential oils, lipids, and feed management can have substantial effects not only minimizing the methanogenesis but also improving the nutrition uptake.Inophores and essential oils needed long term of in vivo studies,also some kinds of tannin showed good mitigation effects.Certain feed management strategies like "Total Mixed Ration" still needs more researches in this point, but for concentrates inclusion it was shown its ability for mitigation, but it cannot be generalized under all breeding systems.This paper reviews and discusses some of common approaches with advantages and disadvantages.