| abstract |
【Task】 The biologically active substance is stably protected in the rumen of ruminants inhabiting microorganisms, and is efficiently released in the lower digestive tract after the fourth stomach. [Solution] The biologically active substance is selected from hardened animal / vegetable oils and fats, linear or branched saturated or unsaturated aliphatic monocarboxylic acids having 12 to 22 carbon atoms, aliphatic esters, waxes and waxes. At least one coating agent, lecithin and propionic acid or a salt thereof, sorbic acid or a salt thereof, benzoic acid or a salt thereof, dehydroacetic acid or a salt thereof, paraoxybenzoic acid esters, imazalyl, thiabendazole, orthophenylphenol, ortho A rumen bypass agent for ruminants, which is coated with at least one preservative selected from sodium phenylphenol and diphenyl. [Selection figure] None |