Prawn luminous vibriosis pond treatment method

Abstract

The invention discloses a prawn luminous vibriosis pond treatment method. According to the method, based on the ecological characteristics of pond luminous vibriosis, the water salinity of the prawn luminous vibriosis pond is desalted at the initial death stage of prawns, meanwhile, the luminous vibriosis is restrained through disinfectant, dead prawns are discharged in time for reducing propagation in the pond, the water color and prawns are protected in time, finally, pond pathogenic bacteria are completely restrained, pond treatment is finished, and the healthy ingestion and growth of prawns are facilitated. The novel disinfectant is selected, and compared with traditional antibacterial agents, interference on growth of water physical and chemical factors, algae and prawns can be greatly lowered. The method has the advantages that the efficiency is high, toxicity is low, additive residence time is short, and influences on water algae are small. The pond treatment method can also be used for preventing and treating the pond with vibriosis caused by vibrios growing normally only with a certain salinity.

Description

technical field [0001] The invention relates to a treatment method for aquaculture ponds, in particular to a pond treatment method for luminescent vibriosis of prawns, and belongs to the technical field of aquaculture treatment. Background technique [0002] Photovibriosis is a common and serious disease in mariculture areas. Common shrimp-pathogenic luminescent vibrios in seawater shrimp farming belong to the genus Vibrio, including Vibrio harveyi, Vibrio beautiful biotype I (V. splendidus biotype I), Vibrio fischeri (V. fischeri ) and Mediterranean Vibrio (V.mediterranei) and so on. In adults, the head, chest, and ventral surface of the abdomen fluoresce first, and in severe cases, the whole body luminesces, resulting in clinical symptoms such as yellow gills, red bodies, enlarged liver and pancreas, redness, and whiteness. The onset speed is fast, the lethality rate is high, and the disease can be caused at different stages of shrimp nursery and culture. In the culture ...

AI Technical Summary

Problems solved by technology

Various antibacterial drugs are effective in inhibiting the Vibrio, among which antibiotics such as florfenicol and disinfection treatment have certain effects. However, in the large-scale cultivation of Penaeus vannamei, these measures have little effect, making the luminous arc Bacterial diseases are protracted for a long time, and the roots cannot be removed for a long time. Once there are unfavorable conditions, large-scale deaths will erupt, and at the same time, secondary diseases such as viral diseases will occur, and the breeding cannot be continued after all.

[0004] The main reasons are as follows: 1) The prawns feed on sick and dead shrimps, and a large number of pathogens are transmitted at one time. The reason is that the prawns cannibalize each other. In this way, a large number of pathogenic bacteria enter the healthy or mild condition after one-time cannibalism. prawns, the disease rapidly became serious, making it impossible to cure the root cause; 2) The efficiency of drug administration and feeding in aquatic animals was extremely low, and most drugs could not effectively enter the prawns, but dissolved in the water body; 3) The ingestion of sick prawns was extremely poor , ingestion of drugs is also less, which leads to an important technical problem, the way of antibacterial drugs through water bath medicine may be the best treatment; 4) It is easy to produce drug resistance to the drug delivery; 5) Even through the drug The method of bathing allows a certain amount of medicine to reach the animal body, but the therapeutic effect still cannot achieve the result of greatly reducing death; therefore, it is necessary to study the ecological conditions and physical and chemical conditions of the water body to inhibit pathogens; 6) use disinfectants more than twice, and the water body The ecological system is completely destroyed, and the growth concentration of pathogenic bacteria increases. How to restore the physical and chemical level of ecological conditions in time is important; 7) The dead prawns are large individuals that grow fast, and they die for a long time (stealing), which causes the loss of breeding benefits; 8) Treatment process Or the protracted time of the disease process is too long (10-30 days), and at the same time, the drastic changes in the physical and chemical conditions of the water body lead to serious obstacles to the molting and feeding of prawns, causing problems

[0005] The existing treatment methods for Luminescent Vibrio disease of Penaeus vannamei have not achieved effective treatment and cannot be eradicated. Therefore, most of the pathogenic outbreaks of diseases end in failure, death, or abandonment, let alone the purpose of preventing recurrence