Positive ducklings were detected by dot-E1A 7 days after the infection, and were randomly divided into five groups: Haizhuyigan Capsule large-dose group, medium-dose group, small-dose group, normal saline model group, ACV control group.

• 随机分成 5组 :海珠益肝胶囊大、中、小 3个剂量组、以生理盐水灌胃的模型组和以无环鸟苷 (ACV )灌胃的对照组。