Coated vitamin c preparation for animal feed production and use thereof

A coated vitamin C preparation for animal feed, comprising a particulate core substance having a content of vitamin C and a coating material composed of one or more fine powdery lipids having a melting point of at least 40 DEG C and a content of vitamin E, said coating material being present as an agglomerated coating layer surrounding the entire circumference of each particle of said particulate core substance. The coated vitamin C preparation is produced by a process, which comprises a step of bringing particles of a particulate core substance having a content of vitamin C into contact collidingly with particles of a coating material composed of one or more fine powdery lipids having a melting point of at least 40 DEG C and a content of vitamin E, so as to form a coating layer of agglomerated particles of the coating material surrounding the entire circumference of each particle of the core substance. The coated vitamin C preparation is useful as a supplement to feeds for animals, such as, livestock, poultry and marine animals, by admixing as such to the feed. The coated vitamin C preparation is superior, as compared with conventional coated preparations, in the coverage performance, vitamin C isolation effect against external influences of, such as, light, heat, moisture and atmosphere, to attain better preservation of the vitamin C activity even upon admixing to feed mixtures, with high adsorptibility of vitamin C by organisms.