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Method for preventing and controlling shrimp infectious diseases by using Epinephelus malabaricus

A kind of grouper, infectious technology, applied in the field of prevention and control of shrimp infectious diseases, can solve problems such as breeding failure, shrimp death, etc., to reduce breeding costs, reduce workload, and be conducive to the protection of the ecological environment. Effect

Inactive Publication Date: 2011-06-22
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

[0022] 1. Comparing with the normal management method of prawn farming, after cultivating the water, put in about 1.0cm shrimp seedlings, 80,000 to 100,000 tails per mu.

[0023] 2. Put some grouper in time. When the prawns reach 0.5 grams, put the grouper before the outbreak of the prawn disease. During the breeding process, often due to the reasons of the shrimp seedlings themselves, large-scale deaths occurred in the early stage of breeding, so there was no need to stock the grouper. Therefore, when it is preferably cultured to 0.5 grams, after the shrimp seedlings are stable, put in the grouper; the number of grouper to be put in cannot be less than 15 tails / acre, and can be appropriately increased according to the density of the seedlings stocked, but at most No more than 20 fish / mu; the specification of spotted grouper is 0.10~0.15kg.

[0024] 3. Except that the present invention has specific requirements on the salinity of the cultured water and the specification, qua...

Embodiment 2

[0026] Beginning in August 2010, in two breeding farms in Dongfang City and Changjiang County, Hainan Province, the total water surface area of ​​the pond is 185 mu, of which 90 mu use this patented technology and 95 mu use the general breeding method. The stocking density of Litopenaeus vannamei is 80,000 tails / mu, and it will be cultured for 20-30 days. When the weight of the prawns is about 0.5 grams, 20 tails of grouper with a weight of 0.10-0.15 kg are put in for 90-110 days. There was no outbreak of infectious diseases of prawns. In November, 90 mu of prawns were cultivated using this patented technology to reach the market size of 70-80 tails / kg, and the breeding success rate was 100%. At the same time, 23 mu of the 95 mu of prawns cultured by the general farming method were forced to drain ponds due to the outbreak of WSS, with a pond drainage rate of 24.2% and a success rate of 75.8%.

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Abstract

The invention belongs to the field of aquaculture and relates to a method for preventing and controlling shrimp infectious diseases. The method comprises the following steps of: throwing 80,000 to 100,000 prawn seeds into per mu of a sea area with high-salinity seawater; and when each prawn is bred to be 0.3 to 0.7 gram, throwing 15 to 20 pieces of the Epinephelus malabaricus into per mu of the sea area with high-salinity seawater, wherein each piece of the Epinephelus malabaricus is 0.10 to 0.15 kilogram. A large number of tests prove that the Epinephelus malabaricus of 0.10 to 0.15 kilogram eats the prawns dying of illness in a prawn culture pond, and the probability of eating the healthy prawns is very small due to the habits of the healthy prawns. The problem of low survival rate of the cultured prawns because the healthy prawns are eaten is solved; and the shrimp infectious diseases are effectively prevented and controlled.

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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IPC IPC(8): A01K61/00
CPCY02A40/81
Inventor 何建国陈锚陈勇贵翁少萍刘贤武
Owner SUN YAT SEN UNIV
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