A biological control method of controlling prawn diseases through grass carps

A technology for shrimp and grass carp, applied in fish farming, application, climate change adaptation, etc., can solve the problems of incomplete and untimely removal of diseased shrimp, and achieve the effect of benefiting shrimp quality, reducing workload and improving efficiency

Inactive Publication Date: 2016-04-27
马晶晶
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Problems solved by technology

[0007] The purpose of the present invention is to provide a method to improve the survival rate of prawns according to the existing shrimp infectious diseases that spread quickly, and the removal of diseased shrimps is not thorough and not timely. Breeding method

Method used

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Embodiment

[0025] l. Comparing with the normal management method of prawn farming, after cultivating the water, put in about 1.0cm shrimp seedlings, 50,000 to 100,000 tails per mu. Since the grass carp is not suitable for living in a water body with a salinity greater than 7.5, the salinity of the cultured water body in the present invention is within the range of 0-7.5. If the salinity of the aquaculture water is greater than 7.5, the salinity can be reduced by adding fresh water to control the salinity within the above range.

[0026] 2. Put grass carp in time. The prawns are cultured until about 20 to 30 days, and the grass carp is put in before the outbreak of the prawn disease. During the breeding process, shrimp fry often die on a large scale in the early stage of breeding, and there is no need to stock grass carp before. Therefore, after 20 to 30 days of stocking, grass carp should be released after the shrimp seedlings are stabilized; the number of grass carp stocked should...

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Abstract

The invention provides a biological control method of controlling prawn diseases through grass carps. The method is characterized by putting grass carps in a prawn culture area to prevent the infectious diseases of prawns and increase the survival rate of prawns. The method can prevent the spreading and prevalence of prawn diseases in healthy prawn groups, reduce workload for removing diseased prawns and dead prawns manually, increase the removal efficiency and culture success rate, and bring greater economic benefit for culturists.

Description

technical field [0001] The invention relates to the field of aquaculture, in particular to a biological prevention and control method for controlling prawn diseases through grass carp. Background technique [0002] Shrimp is a pillar species of my country's aquaculture industry. It has developed rapidly in recent years. By 2009, the aquaculture output was 1.303 million tons, and the output value exceeded 30 billion yuan. Shrimp aquaculture has become the target industry of my country's agricultural industrial structure adjustment. [0003] However, the problem of shrimp diseases is still the main bottleneck in the development of shrimp farming industry. The outbreak of infectious diseases of prawns has a certain relationship with the habit of cannibalism of prawns themselves. In the process of shrimp farming, due to the deterioration of environmental conditions, some prawns with weak constitution and poor disease resistance are the first to get sick or even die. Caused ou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K61/00
CPCY02A40/81
Inventor 不公告发明人
Owner 马晶晶
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