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Preventing and controlling method of shrimp infectious disease by utilizing rachycentron canadum

A cobia, infectious technology, applied in the field of aquaculture, can solve the problems of breeding failure, shrimp death, etc., and achieve the effects of reducing breeding costs, reducing use, and large economic benefits

Inactive Publication Date: 2012-06-20
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the process of prawn farming, due to the difference in individual disease resistance, some prawns with weak physique and poor disease resistance are more sensitive to changes in the external environment. Sexual pathogens (bacteria / viruses) spread within the shrimp colony, causing more shrimp to die, and eventually the culture fails

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The method for utilizing cobia to prevent and control shrimp infectious diseases provided by the invention comprises the following steps:

[0024] 1. Comparing with the normal management method of prawn farming, after cultivating the water, put in about 1.0cm shrimp seedlings, about 30,000-100,000 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 on shrimp farming in this field. The water depth of the shrimp culture pond is preferably 1.5-2.5 meters. The salinity of the aquaculture water body according to the invention is in the range of 2-33. The "salinity" mentioned here means the total amount (weight) of dissolved salts in water, and it is expressed in percent per thousand. Generally, the thousandth mark is not used, and it is directly expressed in numerical value. Other physical and chemical factors of the...

Embodiment 2

[0029] From June to September 2011, a prawn breeding experiment was carried out. A total of 10 ponds were selected, numbered 1-10 respectively. Each pond had a breeding area of ​​5 mu, totaling 50 mu. Among them, No. 1-4 ponds put 30,000 shrimps per mu, No. 5-7 ponds put 60,000 shrimps per mu, and No. 8-10 ponds put 100,000 shrimps per mu. Among them, No. 1 pond is a blank control group, and the conventional prawn culture method that does not put in any fish is used for cultivation; No. 2-10 ponds are then cultured according to the method of the present invention, that is, the species of Litopenaeus vannamei is put in After 20 days of seedlings (the prawn body weight was about 0.3-0.7 gram this time), start to put in the cobia of body weight about 100 (± 10) g / tail by the density of 50 tails / mu. After about 100 days of breeding, the prawns were on the market. The prawns in No. 2-10 breeding ponds did not have shrimp infectious virus diseases, and the breeding success rate was...

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PUM

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Abstract

The invention belongs to the field of aquaculture, and relates to a preventing and controlling method of a shrimp infectious disease by utilizing rachycentron canadum. The method comprises the following steps: throwing prawn shrimp seeds into sea water with salinity between 2 and 33, wherein 30,000 to 100,000 rachycentron canadum is thrown each Mu; and throwing rachycentron canadum which is between 90 and 110g per fish when each prawn is between 0.3 and 0.7g, wherein 50 rachycentron canadum is thrown in each mu. Massive experiments prove that 90-110g / fish ingests the rachycentron canadum ill or dead prawn in the shrimp culturing pool, and the probability that healthy prawn is ingested is very small due to the habits of the prawn. The characteristic of the rachycentron canadum is used for solving the problem of low survival rate of cultured prawn caused by healthy prawn ingestion.

Description

technical field [0001] The invention belongs to the field of aquaculture and relates to a method for preventing and controlling shrimp infectious diseases. Background technique [0002] Shrimp is one of the most important aquatic economic animals in the world. It is one of the most active species in international trade. It is also an advantageous species for the export of aquatic products in my country. In 2009, the aquaculture output was 1.303 million tons, the export volume was 188,000 tons, and the export value was 1.23 billion US dollars. The output value exceeds 30 billion yuan. The export volume of single-species general trade ranks first. [0003] With the rapid development of the shrimp farming industry, China has once again become the world's largest shrimp farming country. However, due to objective reasons such as the degradation of seedling quality, the blind increase of breeding density, the pollution of seawater, the abuse of drugs, irrational nutrition, and po...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K61/00
CPCA01K61/00A61K35/60
Inventor 何建国陈勇贵翁少萍
Owner SUN YAT SEN UNIV
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