Patent ID: 7514111
Filing Date: 2009-04-07
Classification: A23K,Y10S

Abstract:
1. A method for preparing a granular animal feed additive, which comprises: filtering, with a membrane filter, a fermentation broth obtained from a lysine producing microorganism cultured in a lysine producing condition to obtain a lysine-containing filtrate and a microorganism-containing sludge; drying the filtrate to obtain a concentrate with a total solid content of 48 to 52 wt %; granule-drying the concentrate at a temperature of 50° C. to 60° C. to obtain granules; and coating the granules with a coating agent containing a lysine content adjuster and one or more additives selected from the group consisting of the sludge, and a moisture prevention agent, wherein the lysine content adjuster is a diluent or free lysine depending on the lysine content of the granule, to obtain lysine granules having the following properties: and wherein the animal feed additive has a constant content of lysine.