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Method for preventing and controlling shrimp communicable diseases through twice epinephelus coioids release

An infectious technology of grouper, which is applied in the field of prevention and control of infectious diseases of farmed shrimps, can solve the problems of rapid spread of infectious diseases, untimely, incomplete removal of diseased shrimps, etc., so as to reduce workload and improve efficiency , beneficial to the quality of the effect

Inactive Publication Date: 2012-04-11
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a method for raising the survival rate of prawns in view of the existing shrimp infectious diseases that spread quickly, and the removal of diseased shrimps is not thorough and timely.

Method used

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Embodiment 1

[0029] 1. Comparing with the normal management method of prawn farming, after cultivating the water, put in about 1.0cm shrimp seedlings, 3 to 100,000 tails per mu. The "normal management method" mentioned here refers to the general routine technical operations for shrimp farming by those skilled in the art. For details, please refer to the instruction manual for shrimp farming. The water depth of the shrimp culture pond is preferably 1.5-2.5 meters. The salinity of the aquaculture water body in the present invention is in the range of 11-41. The "salinity" mentioned here means the total amount (weight) of dissolved salts in water, expressed in percent per thousand. Other physical and chemical factors of the shrimp culture water body: temperature is preferably 16-36°C, pH is preferably 6.5-8.5, dissolved oxygen ≥ 4.0 mg / L, ammonia nitrogen ≤ 0.50 mg / L, nitrite nitrogen ≤ 0.05 mg / L.

[0030] 2. Put the grouper in time. After 10-30 days of prawn cultivation, put the grouper f...

Embodiment 2

[0033] From April to July 2011, a prawn breeding experiment was carried out in Hainan Nanjiang Biotechnology Co., Ltd. A total of 10 ponds were carried out, numbered 1-10, and each pond had a breeding area of ​​5 mu, a total of 50 mu. - 30,000 shrimp seedlings per mu in No. 3 pond, 80,000 shrimp seedlings per mu in No. 2-6 pond, and 100,000 shrimp seedlings per mu in No. 7-10 pond. According to the technology of the present invention, carry out Litopenaeus vannamei culture, put in 20 days after putting in the seedlings and start putting in the weight of the oblique grouper of about 100g / tail with the density of 30 tails / mu, when the prawns are cultivated to the body length of 6-7cm, again With the density of 30 tails / mu, put in the grouper whose body weight is about 180g / tail. After 100 days of breeding, the prawns will be on the market, and the outbreak of viral diseases will not occur in the prawns in the 50 mu culture pond. And other adopt the prawn culture pond that does ...

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Abstract

The invention discloses a method for preventing and controlling shrimp communicable diseases through twice epinephelus coioids release. In the method, epinephelus coioids of two different size specifications are released in a prawn culture region twice, thus the prevention and control of the peneldshrimp communicable diseases can be realized, and the survival rate of prawns can be improved. By utilizing the method disclosed by the invention, shrimp diseases can be prevented from being spread and popularized among healthy shrimp clusters, the work load of artificially removing sick shrimps and died shrimps is reduced, the removing efficiency and the culture success ratio are improved, and greater economic benefits are brought to culturists.

Description

technical field [0001] The invention relates to the field of aquaculture, in particular to a method for preventing and controlling infectious diseases of cultured shrimp. 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 prawn farming, due to the deterioration of environmental conditions, individual prawns with weak physique and poor disease resistance will get sick or even die first, and the latter will be preyed...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K61/00
CPCA01K61/00A01K61/13A01K61/59Y02A40/81A01K61/10
Inventor 何建国陈勇贵翁少萍
Owner SUN YAT SEN UNIV
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