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