Preparation of shrimp Vibrio anguillarum IgY and its effect on protecting from artificial infection
对虾鳗弧菌卵黄抗体(IgY)的制备及其对人工感染的保护研究

The purly cultivated Vibrio anguillarum was taken as an antigen to explore the preparation technology and the metabolism in shrimp body of IgY,and the effect on protecting from artificially infected Vibrio anguillarum.The result showed that Vibrio anguillarum had a strong immunity of laying hens.Antibody was detected in blood serum and vitellus soon after the laying hens were immunized,and the antibody-level in vitellus was higher than that in serum.After oral administration,IgY could be detected at rectum,bloodlymph and also in hepaticopancrea of shrimp which lasts about 12~24 h.The death rate within 7 days of the tested group was 15%,significantly lower than that of the control(60%,P<0.01), showing good protection of IgY from vibrion infection.