The medicinal fungi was incubated into mixed dioscorea japonica thunb and mixed dioscorea japonica thunb and Chinese medicine Huangqi, which was used through solid fermentation. Its fungal fermentation substance was fed to AA broiler as feed additive separately. The effect of fungal fermentation substance on the AA broiler of endogenous hormone metabolism, immunity and production performance was primary studied. The result indicated, the regulation effect of fermentation substance on the endogenous hormones...