Microbial preparation and application thereof to aquaculture

Abstract

The invention discloses a microbial preparation, and specifically discloses a microbial preparation prepared from pig-derived bacillus licheniformis YHSH-02, and an application of the microbial preparation to aquaculture. The strain disclosed by the invention is preserved in the China General Microbiological Culture Collection Center of China Committee for Culture Collection of Microorganisms at No. 3, No. 1 yard, Beichen West Road, Chaoyang district, Beijing, the preservation number is CGMCC NO.15454, and the preservation date is 15th March, 2018. The bacillus licheniformis YHSH-02 disclosedby the invention is separated from intestines of wild boars, can produce rich small peptide, lipopeptide type bacillin, antibacterial protein and the like, can restrain growth of various aquaculture pathogenic bacteria of vibrio parahaemolyticus, edwardsiella tarda, aeromonas hydrophila, pseudoalteromonas nigrifaciens, vibrio vulnificus and the like, and can be used for preventing and treating aquaculture diseases caused by various bacteria of the vibrio parahaemolyticus, the edwardsiella tarda, the aeromonas hydrophila, the pseudoalteromonas nigrifaciens, the vibrio vulnificus and the like. The situation that the microbial preparation can effectively prevent and treat black-foot diseases of prawns is found for the first time, an effective scheme is provided for preventing and treating theblack-foot diseases of the prawns, and the microbial preparation has important significance. The bacillus licheniformis YHSH-02 obtained from the intestines of the wild boars is a bacterial strain which is high in preventing and treating efficiency, wide in preventing and treating range and notable in growth promotion and has biological preventing and treating potential, and has favorable application and development prospects.

Description

technical field [0001] The invention belongs to the technical field of microorganisms, discloses a microbial agent and its application in aquaculture, in particular discloses a microbial agent produced by Bacillus licheniformis Bacillus licheniformis YHSH-02 Microbial agent prepared by fermentation and its application in aquaculture. Background technique [0002] In recent decades, feed drug additives based on antibiotics, hormones, and preservatives have brought great benefits to the production of aquaculture such as fish and shrimp. However, with its wide application, some disadvantages have also appeared, such as the emergence of drug-resistant strains, antibiotic residues in livestock, poultry, fish, shrimp and aquatic products, and superinfection. These issues have attracted widespread attention and concern from the international community. , More and more countries have banned or restricted various antibiotics, hormones, and preservatives as feed additives. The appli...

AI Technical Summary

Problems solved by technology

[0004] At present, the prevention and control methods for bacterial aquatic diseases in my country still mainly rely on chemical drugs such as antibiotics. Antibiotic treatment and other measures can achieve the purpose of partially controlling the occurrence of diseases and promoting the growth of farmed animals, but the resulting drug resistance of pathogenic microorganisms and drug residues , water environment pollution, and aquatic product quality and safety issues are becoming more and more serious; at the same time, due to the long-term use of these drugs, while killing pathogenic organisms, they also damage the normal microbial barriers owned by the skin and intestinal tract of farmed animals. Those endogenous or exogenous pathogenic bacteria that were originally inhibited by the normal flora barrier can reproduce in large numbers, destroying the micro-ecological balance of the normal microbiota in the epidermis and intestinal tract of farmed animals, making the incidence of farmed animal diseases worse