|pagebody = The majority of the ruminant diet is composed of complex plant carbohydrates, for example cellulose. In the [[The Rumen - Anatomy & Physiology|rumen]], these are broken down by fermentation by bacteria and protozoa. The fermentation process produces 1-2 litres of gas each minute which is eliminated via the [[Oesophagus - Anatomy & Physiology|oesphagus]] by [[Eructation - Anatomy & Physiology|eructation]].
* The majority of the ruminant diet is composed of complex plant carbohydrates, for example cellulose. In the [[The Rumen - Anatomy & Physiology|rumen]], these are broken down by fermentation by bacteria and protozoa.
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* The fermentation process produces 1-2 litres of gas each minute which is eliminated via the [[Oesophagus - Anatomy & Physiology|oesphagus]] by [[Eructation - Anatomy & Physiology|eructation]].