Methane is a short-lived but powerful greenhouse gas and the second-largest contributor to climate change after carbon dioxide. And the majority of human-induced methane emissions comes from livestock.
About 70% of agricultural methane comes from enteric fermentation – chemical reactions in the stomachs of cows and other grazing animals as they break down plants. The animals burp out most of this methane and pass the rest as flatulence.
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The steers in our study converted feed to body weight up to 20% more efficiently than cattle on a conventional diet.
https://www.ecowatch.com/cow-seaweed-methane-2651130438.html
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