| 摘要 |
Composition for feeding ruminants, containing a water-soluble biologically active substance which is stable in a medium whose pH is greater than or equal to 5 and which permits the release of the active substance in a medium whose pH is less than 3.5, comprising: a core containing the active substance, which has optionally undergone a surface treatment, a first coating layer consisting of a film-forming substance sensitive to pH variations, optionally in combination with an inorganic filler, and a second coating layer consisting of a hydrophobic substance, optionally in combination with an inorganic filler. |
