FEED ADDITIVE FOR RUMINANTS

摘要

A biologically active substance which is stabilized while passing through the rumen and is released in the abomasum and its subsequent digestive tract, and is digested and absorbed with good efficiency. This is made possible by providing a feed additive for ruminants which is prepared by coating cores containing a biologically active substance, with a coating composition comprising lecithin, at least one inorganic substance which is stable under neutral conditions and soluble under acidic conditions, and at least one substance selected from the group consisting of straight-chain or branched-chain saturated or unsaturated monocarboxylic acids having 14 to 22 carbon atoms or salts thereof, hardened vegetable oils, hardened animal oil and waxes. The biologically active substances thus processed can be effectively digested and absorbed by ruminants.