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Method for ecologically preventing and treating epizootic ulcerative syndromes of fishes

An epidemic and syndrome technology, which is applied in the field of ecological prevention and control of epidemic ulcer syndrome in fish, especially hybrid snakeheads or bamboo shoot shell fish, can solve the problems of no vaccine and treatment methods, and achieve low cost, environmental protection and effective high efficiency effect

Inactive Publication Date: 2014-02-26
珠海市之山水产发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In 2012, "Manual of Diagnostic Tests for Aquatic Animals" pointed out that there is no effective vaccine and treatment to treat diseased fish with epidemic ulcer syndrome, and only some immune preparations can prevent it to a certain extent the disease

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Utilize the present invention to the method that the hybrid snakehead outbreak epidemic ulcer syndrome that cultured in Pearl River Delta in January-April 2013 is carried out prevention and cure method:

[0024] (1) Cultivate biofloc: at 1.0-2.0kg / m 3 Add carbon source (one or more equal amounts of glucose, molasses, or brown sugar) to the grass carp culture water body where grass carp is stocked at a density, and control the carbon-nitrogen ratio in the water body to 18:1-25:1. The water body is aerated, and the water body The dissolved oxygen is above 5mg / L, the pH is maintained at 6.5-7.5, the alkalinity is 80-250mg / L, and the water temperature is above 18°C. Grass carp feed is fed at 2-8% of the grass carp’s weight. After 12 days, bioflocs are formed. Maintain water flow and biofloc suspension;

[0025] (2) Breeding: When the total suspended solids in the water body are greater than 60mg / L, the diseased hybrid snakehead should be raised in biofloc water. During the...

Embodiment 2

[0032] Utilize the method that the present invention prevents and treats the outbreak of bamboo shoot shell fish infected with epidemic ulcer syndrome:

[0033] (1) The biofloc cultivation method and breeding method are the same as those in Example 1 (1) and (2);

[0034] (2) Results: After cultivating bamboo shoot shellfish at a water temperature of 22-26°C for 20-30 days, the cure rate is about 60% after a small test. After 30 days of cultivation, the lesion recovery situation was recorded as follows:

[0035] Trunk infection: ulcer symptoms were observed at the beginning, and the ulcer healed in about 20 days, and new scales grew out, and the cure rate could reach more than 75%;

[0036] Abdominal infection: There are ulcer symptoms at the beginning, and the ulcer will heal in about 25 days, and new scales will grow out, and the cure rate can reach more than 60%;

[0037] Head infection: There are ulcer symptoms at the beginning, and the ulcer will heal or partially heal ...

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PUM

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Abstract

The invention relates to a method for ecologically preventing and treating epizootic ulcerative syndromes of fishes, in particular to a method for ecologically preventing and treating epizootic ulcerative syndromes of fishes, particularly hybrid northern snakeheads or marble gobies (marbled sand gobies). The method includes culturing sick fishes in water with biological floccules. The method has the advantages that as proved by repeated experiments, the epizootic ulcerative syndromes of the fishes can be effectively prevented and treated by the method, and an effective rate reaches 70%; the cost is low, environments can be protected, drugs, chemical reagents and other extra reagents can be omitted, the effective rate is high, the method is simple, and operation is easy; intake of other drugs with side effects can be prevented when the method is used for preventing and treating the epizootic ulcerative syndromes for the fishes, and accordingly the food safety can be effectively guaranteed for people.

Description

technical field [0001] The invention relates to an ecological method for preventing and controlling fish diseases, in particular to a method for ecologically preventing and controlling the epidemic ulcer syndrome of fish, especially hybrid snakehead or bamboo shoot shell fish. Background technique [0002] Epizootic ulcerative syndrome (EUS) is caused by Aphanomycetes, secondary infection of Aeromonas hydrophila, Aeromonas tempera, Rhabdovirus, etc. It is a seasonal epidemic disease that is extremely harmful to freshwater and seawater fish that are raised, and can cause fish to fester to varying degrees. The disease is extremely harmful to freshwater and seawater fish, and has the characteristics of long incubation period, high morbidity, and high mortality, and it causes great harm to the aquaculture industry. In recent years, the disease has often broken out in famous and special cultured species such as black snakehead, California perch, pond louse, hybrid catfish, and y...

Claims

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Application Information

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IPC IPC(8): A01K61/00
CPCY02A40/81
Inventor 余德光谢骏王广军王海英龚望宝夏耘郁二蒙魏南李志斐
Owner 珠海市之山水产发展有限公司
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