| 摘要 |
PURPOSE:To obtain particles that pass through directly the first stomach of a ruminant and decomposed and absorbed in the fourth or latter stomach, comprising a physiologically active substance, a substance that is stable under neutral conditions but collapses under acidic conditions, and a monocarboxylic acid or a specific animal oil, etc. CONSTITUTION:In preparing particles comprising (A) a physiologically active substance (e.g., nutrient, feed, or drug), (B) a substance (e.g., benzylaminomethyl cellulose, vinylethylamine vinyl acetate copolymer), (C) a >=14C straight-chain or branched (un)saturated monocarboxylic acid, or its salt, or a substance selected from an animal or vegetable oil and wax having >=40 deg.C melting point, only the surface of the particles is heat-treated at a temperature >= the melting point of the component C to form a film. An amount of the component B is 10-80wt% based on the total amounts of the particles used, and an amount of the component C is >=10wt%. |
