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Method for controlling prawn hepatopancreas necrosis by polyculture of scatophagus argus and marsupenaeus japonicas

A technology of money fish and hepatopancreas, which is applied in fish farming, application, climate change adaptation, etc., can solve the problems of increasing the difficulty of raising Penaeus japonicus, and achieve the effects of improving the breeding pond environment, reducing the use of drugs, and reducing pollution

Inactive Publication Date: 2016-05-04
GUANGDONG OCEAN UNIVERSITY
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AI Technical Summary

Problems solved by technology

Difficulty in raising Penaeus japonicus due to frequent occurrence of diseases

Method used

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Embodiment 1

[0017] Example 1 The method of the present invention was used for cultivation in the Banqiao breeding base of Hainan Changjiang Jiangnan Biotechnology Co., Ltd.

[0018] Select the experimental ponds as 1# and 2# respectively, with an area of ​​2000m 2 , the pool is 2.0m deep, with sandy mud bottom, with a central drainage system and connected to the water treatment system. After harvesting the shrimps, drain the pond water, let the sun shine until the bottom of the pond cracks, and thoroughly remove the silt and organic matter at the bottom of the pond, barnacles on the pond wall, etc. One month before stocking, use 70-100 kg of quicklime per mu, evenly distribute it on the bottom of the pond, plow and expose to the sun. Enter the water to 20-30 cm. Chlorine preparations are used to disinfect the bottom of the pool. The effective chlorine concentration is 30 g / m3. The whole pool is sprayed with clear pond drugs to kill fish, shrimp, crab eggs, bacteria, viruses, etc.

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Abstract

The invention discloses a method for controlling prawn hepatopancreas necrosis by polyculture of scatophagus argus and marsupenaeus japonicas. The method comprises: in breeding, throwing marsupenaeus japonicas shrimp seeds whose total length is 0.8-1.0 cm, throw-in density being 70-80 thousands seeds in each mu, when the shrimp seeds growing to 2-3 cm of marsupenaeus japonicas body length, throwing scatophagus argus whose body length is 3-5 cm, throw-in volume being 200-300 fish / mu. Through throwing the scatophagus argus which has omnivory and benthic feeding habit in proper density, proper specification, prawn culture pond water body and bottom pollution can be reduced, so as to improve culture pond environment, reduce harmful bacteria contents in the pond water and bottom mud, and control occurrence and diffusion of bacterial diseases in prawn culture. The method can effectively eliminate redundant nutrient substances in the bottom of the pond and in the water, reduces bacteria number, prevents outburst of prawn hepatopancreas necrosis, and improves success rate of culture.

Description

technical field [0001] The invention relates to a method for controlling the hepatopancreas necrosis of prawns by polyculture of money fish and Penaeus japonicus, and belongs to the technical field of aquaculture. Background technique [0002] Shrimp aquaculture is the pillar industry of marine aquaculture in my country, with an annual output of more than 1.3 million tons in recent years. However, the stocking density is constantly increasing, the breeding environment is deteriorating, and the disadvantages such as high incidence of diseases are becoming more and more prominent. In addition to the hazards of viral diseases such as Vitiligo Syndrome, Taura Syndrome, and Yellow Head Disease, comprehensive diseases such as Stealing Death Disease and Hepatopancreatic Necrosis are becoming more and more serious. Especially the occurrence of prawn early mortality syndrome (Early Mortality Syndrome, referred to as EMS) disease has caused a catastrophic blow to the entire prawn ind...

Claims

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Application Information

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IPC IPC(8): A01K61/00
CPCY02A40/81A01K61/00
Inventor 李晓筠孙成波刘东超陈兆明王平王成桂刘雪婷
Owner GUANGDONG OCEAN UNIVERSITY
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