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Stepped fry rearing method for golden pompanos in large water body

A cultivation method and a stepped technology, applied in the field of golden pomfret aquaculture, can solve the problems of dead seedlings, scale shedding, stress response, etc., and achieve the effects of reducing death and morbidity, preventing breeding and reproduction, and reducing stress response.

Active Publication Date: 2016-11-23
LINGAO HAIFENG BREEDING DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since there is usually a certain distance between the place where the seedlings are raised and the place where the breeding is carried out, the fish body is often damaged and the scales fall off during the transportation process, which can easily cause bacterial infection or parasite invasion, resulting in the loss of fry
In addition, there are certain differences in water quality, temperature, and water flow speed between the area where fry are cultivated and the breeding area. If the operation is not done properly, it is very easy to cause stress reaction and cause dead seedlings, resulting in huge economic losses.

Method used

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  • Stepped fry rearing method for golden pompanos in large water body

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A method for cultivating golden pomfret stepped large water body fry is characterized in that it comprises the following steps:

[0026] (1) Hatching of fish eggs

[0027] Choose a pond that is closer to the ocean as a nursery pond. Before putting fish eggs, remove the sludge at the bottom of the pond, use quicklime to disinfect the pond, inject filtered seawater to clean the pond, drain the water, and refill it with filtered seawater. Seawater, set up the hatching bucket, set up the air stone in the bucket to inflate, maintain the exchange rate of seawater in the nursery pool until the end of the nursery; put the fertilized eggs after the water quality of the nursery pool is stable; collect the fertilized eggs the next day after the golden pomfret broodstock spawn and put them in the hatch The bucket is hatched, and dead eggs are found to be removed in time; the rate of air stone inflation is adjusted to make the water flow in the hatching bucket, and the fertilized eg...

Embodiment 2

[0035] A method for cultivating golden pomfret stepped large water body fry is characterized in that it comprises the following steps:

[0036] (1) Hatching of fish eggs

[0037] Choose a pond that is closer to the ocean as a nursery pond. Before putting fish eggs, remove the sludge at the bottom of the pond, use quicklime to disinfect the pond, inject filtered seawater to clean the pond, drain the water, and refill it with filtered seawater. Seawater, set up the hatching bucket, set up the air stone in the bucket to inflate, maintain the exchange rate of seawater in the nursery pool until the end of the nursery; put the fertilized eggs after the water quality in the nursery pool is stable; collect the fertilized eggs the next day after the golden pomfret broodstock spawn and put them into the hatching The bucket is hatched, and dead eggs are found to be removed in time; the rate of air stone inflation is adjusted to make the water flow in the hatching bucket, and the fertiliz...

Embodiment 3

[0044] A method for cultivating golden pomfret stepped large water body fry is characterized in that it comprises the following steps:

[0045] (1) Hatching of fish eggs

[0046] Choose a pond that is closer to the ocean as a nursery pond. Before putting fish eggs, remove the sludge at the bottom of the pond, use quicklime to disinfect the pond, inject filtered seawater to clean the pond, drain the water, and refill it with filtered seawater. Seawater, set up the hatching bucket, set up the air stone in the bucket to inflate, maintain the exchange rate of seawater in the nursery pool until the end of the nursery; put the fertilized eggs after the water quality of the nursery pool is stable; collect the fertilized eggs the next day after the golden pomfret broodstock spawn and put them in the hatch The bucket is hatched, and dead eggs are found to be removed in time; the rate of air stone inflation is adjusted to make the water flow in the hatching bucket, and the fertilized eg...

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Abstract

The invention relates to the field of cultivation of golden pompanos, in particular to a stepped fry rearing method for golden pompanos in a large water body. After fertilized eggs of the golden pompanos are hatched, fries are reared at different stages in a fry rearing pond and a deep sea net cage, exchange and flowing of the water body are kept, metabolic wastes produced in roe hatching and larva fish growth processes are cleared by the aid of self-cleaning capability of seawater, and the morbidity and the death rate of larva fish are reduced. Besides, at the later stage of fry rearing, the larva fish are transferred to the deep sea net cage for fry rearing, the larva fish of the golden pompanos gradually adapt to the breeding environment of the deep sea net cage, stress reactions due to environment change can be greatly reduced after the fries are put in the deep sea net cage, and the survival rate is greatly increased.

Description

technical field [0001] The invention relates to the field of golden pomfret breeding, in particular to a method for cultivating golden pomfret fry in a stepped large water body. Background technique [0002] There are two main sources of fish fry in deep-sea cage fish farming. One is to catch natural fish species from sea areas and obtain them through cultivation, and the other is to artificially propagate fish species and cultivate them. Due to the balanced growth and development of artificially bred fry, necessary disease control has been carried out during the cultivation period, and the scale of breeding can be adjusted according to the needs of users. Therefore, the demand for artificially propagated fry is increasing year by year. [0003] For deep-sea cage culture, the usual practice is to choose a gentle and stable harbor, or to cultivate fry in deep-water ponds with a large area and good water exchange conditions. After the fry grow to about 3-4 cm, they are transpo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K61/00
CPCA01K61/00Y02A40/81
Inventor 黄海黄达灵
Owner LINGAO HAIFENG BREEDING DEV
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