Bath-immunization—a practical and non-stressing method of vaccinating sea farmed rainbow trout Salmo gairdneri Richardson against vibriosis

Abstract. A non-stressing easily applicable vaccination method against vibriosis in rainbow trout is described. The vaccine consisted of trypsin digested Vibrio anguillarum cells and was administered through a 2 h bath treatment, giving adequate protection in challenge experiments with the same V. anguillarum strain.