Method of using cordate houttuynia herb residue fermentation material to prepare feed additive

The invention discloses a method of using a cordate houttuynia herb residue fermentation material to prepare a feed additive. The technical scheme of the method is as follows: the method is characterized by comprising the following technical steps: (1) drying the cordate houttuynia herb residue and crushing the dried residue to powder; (2) propagating saccharomycetes: taking an enrichment fluid nutrient medium to be autoclaved, and placing the medium in a sterile container, adding Angel dried yeast according to the dose of 5-10 g per 100 ml in a sterile condition, placing the yeast and the culture medium in a constant temperature incubator at 30-37 DEG C to culture for 5-7 h; (3) adding the following materials in the propagated saccharomycetes liquid by weight volume fraction: for each 100 ml of the propagated saccharomycetes liquid, 30-60 g of cordate houttuynia herb residue powder, 1 g of yeast powder, 2 g of peptone and 2 g of glucose, mixing the materials uniformly and continuously fermenting; (4) keeping