| 摘要 |
2.1 Active agents such as feed additives and drugs are often to be released in a delayed manner or slowly after their oral administration. In particular in the case of ruminants, little or none should be released in the rumen. Appropriate encapsulations are expensive and, in particular for administration of relatively large amounts of product, are unsuitable and too costly. Known encapsulations of this type also have the disadvantage of a questionable physiological acceptability and/or are not permitted. 2.2 The novel encapsulation contains relatively thin regions and/or predetermined breaking points, which accelerate the release in comparison to an essentially uniform coating. Angular particulars such as pellets are preferably encapsulated, the encapsulation being formed in such a manner that the encapsulation can break at the edges after the oral administration. Encapsulations are preferably composed of two layers, the inner layer containing a filler plus film-forming agent and the outer layer only containing film-forming agent. 2.3 The encapsulation is suitable for protected administration of active agents for nutritional purposes, for example methionine, or for medical, in particular veterinary medical, treatment, in particular of ruminants.
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