The dairy cow’s rumen is a large bioreactor, home to a diverse and dense population of microbes. A single teaspoon of ruminal content contains 150bn micro-organisms, which act in co-ordination ...

The global herd comprises roughly 1.6 billion cows, each with four stomachs (or, technically, one quadripartite stomach), the largest part of which is the rumen. The rumen of an adult cow can hold ...

Using the rumen liquid samples, the scientists are studying the microbes that convert hydrogen into methane, which is not digested by the cow but instead burped out. A single cow will burp roughly ...

The rumen of an adult cow can hold roughly 200 litres and is packed with billions of bacteria that break down the vegetal matter their cow host consumes. (As an aside, many bovine digestion ...

Using the rumen liquid samples, the scientists are studying the microbes that convert hydrogen into methane, which is not digested by the cow but instead burped out. Thing 1 and other calves receive a ...