USE OF EXTRACT OF PAECILOMYCES VARIOTII FOR PREVENTING AND TREATING FISH PATHOGENIC BACTERIA-INDUCED INFECTION

摘要

PURPOSE: A use of a Paecilomyces variotii extract for preventing or treating pathogenic bacterial infection in fish is provided to ensure immunity to fish diseases, and to prevent bacterial infection in fish. CONSTITUTION: A composition for preventing or treating pathogenic bacterial infection in fish contains an organic solvent extract of Paecilomyces variotii as an active ingredient. The organic solvent is selected from the group consisting of n-hexane, chloroform, ethyl acetate, and butanol. The organic solvent is ethyl acetate. The composition contains a compound denoted by chemical formula 1 as an active ingredient. A method for preventing or treating pathogenic bacterial infection in fish comprises a step of directly treating a water bath in which fish grows with the composition, or adsorbing the composition to a feed for growing fish in a concentration of 1.0-500ppm.