When the water temperature rises, the algae in the water will die or the photosynthesis will be weakened, which will easily lead to the reduction of oxygen in the water, which is conducive to the growth of anaerobic bacteria. In addition, the suitable water temperature and a large amount of residual bait and shrimp manure produced in the breeding process provide a hotbed for the rapid reproduction of Vibrio, which leads to the excessive Vibrio in greenhouse water in winter.

In the face of the recent changeable temperature, it is suggested that friends who raise shrimps in winter shed should detect the indicators of water body and Vibrio, do a good job of prevention and control of Vibrio in advance, do a good job of aeration, water transfer and bottom modification, and sprinkle more microbial agents in the water body, which can not only inhibit the growth of harmful microorganisms, but also decompose organic waste at the bottom of the pond.

At the same time, we should do a good job in protecting the liver and inhibiting bacteria of shrimp. Because most of the livers of Penaeus vannamei infected by Vibrio are very bad, which are characterized by atrophy, swelling, blackening, redness and redness of the body and intestines, all of which are related to the unhealthy hepatopancreas of Penaeus vannamei, so it is necessary to protect the livers in the process of shrimp culture. Using bile acids extracted from animal bile paste can promote the development of hepatopancreas, improve the health status of hepatopancreas and reduce the incidence of hepatopancreatic diseases.

Eucalyptus essential oil extracted from plants can be used to inhibit the growth and reproduction of Vibrio in prawns, and the inflammatory reaction caused by Vibrio infection can be eliminated, and prawns have no side effects and irritation.