Calcium Butyrate is used in animal feeds and as food supplement. It is used for anti salmonella action and immune status of animals. Normal butyric acid or fermentation butyric acid is found in butter, as an hexyl ester in the oil of Heracleum giganteum (cow parsnip) and as an octyl ester in parsnip (Pastinaca sativa); it has also been noticed in the fluids of the flesh and in perspire.