| 摘要 |
The present invention relates to novel methods for producing coated granulated enzyme-comprising feed additives, to the coated enzyme-comprising granules produced in this manner, and also to feed compositions which are obtainable using the coated granules. This method comprises the following steps: a) Extrusion of an enzyme-comprising dough which, in addition to water, comprises i) 50 to 96.9% by weight of at least one solid carrier material suitable for feed, ii) 0.1 to 20% by weight of at least one water-soluble polymer, iii) 3 to 49.9% by weight of at least one enzyme, the weight fractions of i), ii) and iii) in each case being based on the nonaqueous components of the dough; b) final-processing the extrudate to give raw granules having a water content of no greater than 15% by weight, and c) coating the raw granules with a hydrophobic material selected in an extent of at least 70% by weight, based on the hydrophobic material, from saturated fatty acids, the esters of saturated fatty acids, in particular the mono-, di- and triglycerides of saturated fatty acids, and mixtures thereof. |
