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Sea fish ichthyophthiriasis prevention and treatment method

A technology of white spot disease and fish fry, which is applied in the field of prevention and treatment of white spot disease in marine fish, can solve the problems of high mortality, secondary infection, and rapid onset, and achieve the reduction of disease probability, improvement of body resistance, and improvement of The effect of resistance

Inactive Publication Date: 2015-03-18
贾友宏
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Simultaneously stimulate Cryptocaryon to invade the fish body, easily cause secondary infection of bacterial venereal disease at the wound, and the onset is fast and the mortality rate is high
The incidence of white spot disease is closely related to temperature. Generally, when the temperature difference between morning and evening is large, it is easy to cause it, but it is not easy to cause the disease when the temperature is higher than 28°C. Therefore, white spot disease mostly occurs in late autumn. Outbreak, at present, the treatment of white spot disease is to spray formalin, methylene blue, etc., although there is a certain effect, however, the prevention and treatment of white spot is an overall project, especially in mariculture, white spot disease The prevention and treatment of spot disease is different from freshwater aquaculture and has its unique requirements. Therefore, it is necessary to provide a method for the prevention and treatment of white spot disease in seawater cultured fish

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] (1) Choose seawater with gentle flow velocity, seawater depth of 2-5 meters, and sea area 500-5000 meters away from the coast to build cages. The cages are arranged in 3 groups for each unit, and the distance between each group is 50 cm. Each cage is put into The density of fish fry with a body length of 3 cm is 100 fish per cubic meter of water body, so that the fish breeding has a loose environment and can be kept reasonably close. When the fish grows to 5 cm, the density of the fish is 20 when the fish grows to 5 cm. / cubic meter of water body, to maintain good water quality; the purchased fish species should be quarantined to prevent pathogens from being brought in; diseased and dead fish in the pool should be cleaned up immediately, so as not to stimulate the Cryptocaryon worms to fall off from the fish body after the diseased fish dies. water, and then harm healthy fish;

[0012] (2) Choose to put fry in February, so that the fish can reach more than 400 grams in...

Embodiment 2

[0016] (1) Choose a seawater with a gentle flow rate, a sea depth of 2-5 meters, and a sea area 500-5000 meters away from the coast to build cages. The cages are arranged in 4 groups for each unit, and the distance between each group is 100 cm. Each cage is put into The density of fish fry with a body length of 5 cm is 50 fish per cubic meter of water body, so that the fish breeding has a loose environment and can be kept reasonably close. When the fish grows to 10 cm, the density of the fish is 25 when the fish grows to 10 cm. / cubic meter of water body to maintain good water quality; purchased fish species should be quarantined to prevent pathogens from being brought in; diseased and dead fish in the pool should be cleaned up immediately to prevent small melon worms from falling from the fish body to the water body after the diseased fish dies , and then infringe on the healthy fish body;

[0017] (2) Choose to put fry in March, so that the fish can reach more than 400 gram...

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PUM

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Abstract

The invention discloses a sea fish ichthyophthiriasis prevention and treatment method. Fishes are susceptible to ichthyophthiriasis, and ichthyophthiriasis means white spots and mucus appearing on the gills, fins and skin of fishes, and can cause surface inflammation, necrosis, scale shedding and other symptoms on the bodies of fishes. By arranging net cages and choosing a fry release period, in combination with the feeding of multivitamin and immune polysaccharide for enhancing the resistance in the bodies of fishes and the treatment measures of feeding amoxicillin at the beginning of the disease infecting the fishes and hanging trichlorphon and sprinkling abamectin into the net cages in the outbreak period of ichthyophthiriasis, the sea fish ichthyophthiriasis prevention and treatment method prevents and controls ichthyophthiriasis. On one hand, the ichthyophthiriasis resistance of the sea fishes is enhanced, so the sea fishes cannot be easily diseased; moreover, since the fries are released early, at the beginning of ichthyophthiriasis outbreak, the fishes already grow up, the body resistance is enhanced, and therefore the fishes are less susceptible to ichthyophthiriasis; after the fishes are infected with ichthyophthiriasis, at the beginning of infection, the measures are adopted for treatment; consequently, prevention and treatment are combined, and the incidence rate of sea fish ichthyophthiriasis is greatly decreased and even almost eliminated by integrated control.

Description

technical field [0001] The invention relates to a method for preventing and treating white spot disease of sea-cultured fish, and belongs to the technical field of disease prevention and treatment of sea-cultured fish. Background technique [0002] Fish are susceptible to white spot disease during the breeding process. White spot disease is the appearance of white spots and mucus on the gills, fins and skin of fish. The pathogen of white spot disease is Cryptocaryonium stimuli (seawater small melon worm). When the fish body is parasitized by a large number of Cryptocaryonia stimuli, it can cause inflammation, necrosis, and scale loss on the fish body surface; blood vessels in the gills are congested, inflamed, and mucus increases , Difficulty breathing; corneal inflammation, ulceration and blindness. At the same time, it stimulates Cryptocaryon to invade the fish body, which can easily cause secondary infection of bacterial venereal diseases at the wound, and the onset is f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K61/00A23K1/18A23K1/16A23K1/17A23K20/195
CPCA01K61/00A23K20/163A23K20/195A23K50/80Y02A40/81
Inventor 贾友宏
Owner 贾友宏
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