Biological prevention and control method for controlling prawn diseases through grass carps

A technology for prawns and grass carp, which is applied in fish farming, application, climate change adaptation, etc. It can solve the problems of untimely and incomplete removal of diseased shrimps, and achieve the reduction of workload, the protection of the ecological environment, and the reduction of use Effect

Inactive Publication Date: 2011-06-01
SUN YAT SEN UNIV
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Problems solved by technology

[0006] The purpose of the present invention is to provide a culture method for improving the survival rate of prawns according

Method used

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Embodiment

[0024] 1. Comparing the normal management methods of prawn farming, after cultivating the water, put in shrimp seedlings of about 1.0 cm, 50,000 to 100,000 per mu. Since grass carp is not suitable for survival in water bodies with salinity greater than 7.5, the salinity of the cultured water bodies in the present invention is in the range of 0-7.5. If the salinity of the aquaculture water body is greater than 7.5, the salinity can be reduced by adding fresh water to control the salinity within the above range.

[0025] 2. Put grass carp in time. Prawns are cultured for about 20-30 days, and grass carp is stocked before the outbreak of prawn diseases. During the breeding process, the shrimp larvae often died on a large scale in the early stage of breeding, and there was no need to stock grass carp before. Therefore, when the shrimp larvae are generally cultivated for 20 to 30 days, the grass carp will be stocked after the larvae are stable; the number of grass carp stocked shoul...

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Abstract

The invention discloses a biological prevention and control method for controlling prawn diseases through grass carps. In the method disclosed by the invention, grass carps are thrown in prawn culture zones, thereby realizing the prevention of communicable diseases of prawns and improving the survival rate of the prawns. The method disclosed by the invention can avoid propagation and spread of prawn diseases in healthy prawn groups, thereby reducing the workload of artificially clearing diseased prawns and dead prawns, improving the clearing efficiency and culture success rate, and bringing 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 shrimp diseases through grass carp. Background technique [0002] Shrimp is the backbone of my country's aquaculture industry. It has developed rapidly in recent years. By 2009, its aquaculture output was 1.303 million tons, with an output value of more than 30 billion yuan. The amount of foreign exchange earned by exports ranked first in my country's aquatic product exports, reaching 1.23 billion US dollars. Shrimp aquaculture has become the target industry of my country's agricultural industrial restructuring. [0003] However, the problem of shrimp diseases is still the main bottleneck for the development of shrimp aquaculture. The outbreak of prawn infectious diseases has a certain relationship with the habit of prawns to eat each other. In the process of prawn farming, due to the deterioration of environmental conditions, indiv...

Claims

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Application Information

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IPC IPC(8): A01K61/00
CPCA01K61/005A01K61/00A01K61/13A01K61/59Y02A40/81A01K61/10
Inventor 陈勇贵何建国翁少萍
Owner SUN YAT SEN UNIV
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