METHOD FOR PRODUCING OF FEED ADDITIVE (VERSIONS) AND FEED ADDITIVE (VERSIONS) Russian patent published in 2007 - IPC A23K1/00 A23K1/12 A23K1/14 A23K1/16 

FIELD: production of feed additives which may be used as biologically active feed additives in poultry farming, animal farming, fur farming, and fish industry.

SUBSTANCE: method involves processing extracts of coniferous greens; performing microgranulation of neutralized coniferous greens extract using water-soluble polymeric matrix-binder in the form of aqueous solution and combining said matrix-binder with said extract; introducing drops of resultant mixture into aqueous solution of cross-linking agent; using sodium alginate or complex of protein-anion polysaccharide consisting of gelatin and sodium alginate as polymeric matrix-binder, and water-soluble calcium salts as cross-linking agent providing production of water-insoluble matrix of microgranules. Dried granules produced contain the following components, wt% (on conversion to dry substance): coniferous greens extracts 70-90; polymeric matrix-binder 9-25; cross-linking agent (on conversion to calcium ion Ca²⁺) 0.04-0.10. According to another version of method and version of feed additive produced by method, polymeric matrix-binder is complex of protein-anion polysaccharide containing gelatin and sodium alginate, and cross-linking agent contains water-soluble ferric salts providing production of water-insoluble microgranules matrix. Resultant dried granules contain the following components, wt% (on conversion to dry substance): coniferous greens extracts 70-90; polymeric matrix-binder 9-25; cross-linking agent (on conversion to iron ion Fe³⁺) 0.05-0.5.

EFFECT: simplified process and reduced costs for producing of feed additive.

9 cl, 3 tbl, 11 ex