**[[Stomach and Abomasum - Anatomy & Physiology|Foregut fermenters]] recieve nearly all of their energy in the form of VFAs, which have to be converted to glucose by gluconeogenesis in the liver to be able to be used by the brain. | **[[Stomach and Abomasum - Anatomy & Physiology|Foregut fermenters]] recieve nearly all of their energy in the form of VFAs, which have to be converted to glucose by gluconeogenesis in the liver to be able to be used by the brain. |