Bacillus subtilis strain and its application in prevention and treatment of fish and shrimp culture diseases

The invention relates to a Bacillus subtilis strain and its application in the prevention and treatment of fish and shrimp culture diseases, the Bacillus subtilis strain is Bacillus subtilis, and a preservation number is CGMCC NO. 17305. The strain has strong stress resistance and can tolerate the stomach acid and bile salt environment of simulated fish and shrimp; has significant probiotic properties and can effectively inhibit the growth and reproduction of aquatic pathogens Vibrio fluvialis, Vibrio harveyi, Edwardsiella, vibrio alginolyticus, Aeromonas hydrophila, and Vibrio parahaemolyticus, and reduces the risk of disease in fish and shrimp culturing; the extracellular hydrolysis ability can help the fish and shrimp to digest and absorb a feed as well as promote the growth of fish andshrimp. The strain for fish and shrimp culturing can reduce the use of antibiotics, protects the water resources environment, and ensures the safety and quality of aquatic products. 本发明涉及一种枯草芽孢杆菌及其在鱼虾养殖疾病防治中的应用，所述枯草芽孢杆菌株为枯草芽