| 摘要 |
Compositions for zootechnical use for the administration of biologically active substances with nutritional and/or pharmacological properties, with delayed release, are described. The compositions comprise a vehicle constituted by a mixture of fats and waxes, wherein the biologically active substances are incorporated. The method for the production of the compositions comprises the melting of the mixture of fats and waxes, the incorporation of the biologically active substances in said molten mixture, and the subsequent solidification and fragmentation obtaining particles with dimensions of 400-500 m. The compositions of the invention are used for the activation of feeds, for the purpose of obtaining medicated and/or nutritionally integrated feeds, for instance with essential amino acids or vitamins. |
