Patent ID: 7556802

Claim:
A method for preparing a pelletized feedstuff composition, which comprises pelletizing a mixture of animal feed constituents and a coated enzyme-containing granulate suitable for use in animal feed, wherein the enzyme-containing granulate comprises a mixture of at least one enzyme and a solid support suitable for feedstuffs, wherein the solid support is a low-molecular-weight inorganic or organic compound selected from inorganic salts or sugars, wherein the enzyme-containing granulate is coated with an organic polymer which is suitable for feedstuffs selected from the group consisting of: a) polyalkylene glycols having a number average molecular weight of from 400 to 15,000; b) polyalkylene oxide polymers or copolymers having a number average molecular weight of from 4000, to 20,000; c) polyvinylpyrrolidone having a number average molecular weight from 7000 to 1,000,000; d) vinylpyrrolidone/vinylacetate copolymers having a number average molecular weight from 30,000 to 100,000; e) polyvinyl alcohol having a number average molecular weight from 20,000 to 100,000; f) hydroxypropyl methyl cellulose having a number average molecular weight from 6,000 to 80,000; g) alkyl (meth)acrylate polymers and copolymers having a number average of molecular weight from 100,000 to 1,000,000; and h) polyvinyl acetate having a number average molecular weight from 250,000 to 700,000, to obtain a pelletized feedstuff composition, and wherein the coated enzyme-containing granulate has a pelleting stability greater than an uncoated enzyme-containing granulate.