Methane from cows is a waste byproduct arising from the fermentation activity of certain kinds of microbes, called methanogens, in the first of the animal’s four stomach chambers, the rumen. Another ...

Caitríona Morrissey reports on how scientists and regulators were shocked by the recent backlash against methane-reducing feed additive Bovaer.

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“The elk we necropsied here at the wildlife health lab had a large amount of yew – leaves, stems and seeds – in it’s rumen,” Ramsey said. “Yew toxicity often causes sudden ...