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Ruminant stomachs have four compartments: the rumen, the reticulum, the omasum and the abomasum. Rumen microbes ferment feed and produce volatile fatty acids, which is the cow’s main energy source.

A group of scientists are looking at the way relatively unknown fungi works inside the guts of herbivores, including elephants and cows, in the hope that it holds the key to revolutionising biomass ...

Cow's milk is an excellent natural source of B12, because of the abundance of bacteria in their digestive tract capable of producing the vitamin. Specifically, cows have a digestive system that is ...

How a cow’s digestive system could revolutionise renewable energy A group of scientists believe that the key to effective biomass conversion lies in the stomachs of cows and elephants, with new ...

“In the herbivores digestive system, these microorganisms convert plant biomass to sugars which are further processed as energy sources for the animal. Moreover, the gut fungi are able to achieve ...

It is thought cows evolved a supreme immune defence due to their complex and bacteria-packed digestive system. The US National Institutes of Health said the findings were of "great interest".

Experts said the slow digestive system of cows makes them a key producer of methane, a potent greenhouse gas that gets far less public attention than carbon dioxide.