Abstract: Global warming has accelerated the melting of glaciers，increased the frequency and intensity of extreme weather，and damaged ecosystems. Greenhouse gases emitted by livestock play a crucial role in global warming. The sixth assessment report of the United Nations Intergovernmental Panel on climate change has pointed out that methane emission reduction is the fastest and necessary way to mitigate global climate change. Methane emissions from ruminants account for nearly one?third of anthropogenic methane emissions，and cause 3%?13% of dietary energy loss. Therefore，this paper will review the methane emission reduction measures of ruminants.

Key words: Methane, Greenhouse gases, Ruminants, Rumen, Methane emission reduction

摘要： 全球气候变暖加速了冰川融化、增加了极端天气发生频率和强度，并破坏了生态系 统。人为排放的温室气体在全球变暖中起到至关重要的作用。联合国政府间气候变化委员会 第六次评估报告已经指出，甲烷的减排是缓解全球气候变化的最为快速和必需的途径。反刍 动物的甲烷排放占人为甲烷排放量近三分之一，并且造成3%—13%的饲粮能量的损耗。因 此，该文将对反刍动物的甲烷减排措施展开综述。

关键词: 甲烷, 温室气体, 反刍动物, 瘤胃, 甲烷减排