Concentrated spent fermentation beer of saccharopolyspora erythraea activated by an enzyme mixture as a nutitional feed supplement

摘要

A feed additive composition which contains enzyme-treated, concentrated spent fermentation beer of Saccharopolyspora erythraea; a method for making a feed additive containing enzyme-treated concentrated spent fermentation beer of Saccharopolyspora erythraea; a process for improving the nutritive value of spent fermentation beer of Saccharopolyspora erythraea by enzymatic treatment; a method for feeding livestock with a feed containing an enzyme-treated, concentrated spent fermentation beer of Saccharopolyspora erythraea additive and a process for improving poultry feed conversion, breast meat yield and intestinal strength by feeding a feed containing an enzyme-treated, concentrated spent fermentation beer of Saccharopolyspora erythraea additive are disclosed. Preferably, the spent fermentation beer of Saccharopolyspora erythraea is treated with a cellulase and at least one glycosidase, and then concentrated.