| 摘要 |
1. A particulate rumen-penetrating feed additive for ruminants in which at least one biologically active substance is provided with a coating containing a salt of an aliphatic monocarboxylic acid containing from 14 to 22 carbon atoms or of ricinoleic acid or of a mixture of several such acids, characterised in that it contains - based in each case of the total weight - a) from 30 to 50% by weight of at least one biologically active substance, b) from 10 to 35% by weight of at least one sodium, potassium or calcium salt of an aliphatic C14 -C22 monocarboxylic acid or of ricinoleic acid and c) the balance to 100% by weight, but at least 30% by weight of at least one aliphatic C14 -C22 monocarboxylic acid or ricinoleic acid and/or of a hardened vegetable or animal fat. |
