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Method for culturing Epinephelus coioides at low salt degree

A technology of oblique banded grouper and low salinity, applied in fish farming, application, climate change adaptation and other directions, can solve the problems of low survival rate of grouper and restricting the development of grouper aquaculture industry, etc.

Inactive Publication Date: 2010-09-08
PEARL RIVER FISHERY RES INST CHINESE ACAD OF FISHERY SCI
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  • Abstract
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Problems solved by technology

[0002] Grouper culture is mainly based on shallow sea cage culture and seawater pond culture. It has the advantages of strong stress resistance, fast growth, wide temperature and high-density breeding, and high feed utilization rate. In recent years, the scale of culture has been expanding continuously. Diseases, vibriosis, seawater melon worm disease and other diseases are serious, and the survival rate of grouper cultured in seawater is low, the survival rate of seedlings is less than 10%, and the survival rate of growing-up period is only 20%, which seriously restricts grouper Development of the farming industry

Method used

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Embodiment 1

[0012] 1. Desalination specifications of the banded grouper

[0013] Select healthy, normal body length of body surface is 6cm, and the healthy grouper that body weight is 8g raises in seawater (salinity is greater than 20‰).

[0014] 2. The method of desalination of grouper fry

[0015] The cultured seawater of the above-mentioned grouper is desalinated to a salinity of 8.0‰ at a rate of decrease of 1.0‰-2.0‰ salinity / 24 hours, and then cultured in ponds.

[0016] The desalination process can be carried out in cement ponds.

[0017] In addition, during the desalination process, pay attention to observe the feeding of the fish. If the food intake is less than 3%, you can maintain the salinity to stop desalination, and then continue to desalinate after it is normal.

[0018] 3. Pond culture and cage construction

[0019] (1) Pump water (with a salinity of 8‰) into the pond that has been cleaned and the depth of the pond is more than 2.5m; during the breeding process, the sa...

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Abstract

The invention discloses a method for culturing Epinephelus coioides at a low salt degree, and relates to a culturing method for aquatic livestock, in particular to a method for culturing the Epinephelus coioides. The method comprises the following steps of: desalting sea water for culturing healthy Epinephelus coioides at a rate of decreasing 0.1 to 0.2 percent of salt degree per 24 hours; and when the salt degree is desalted to 0.8 percent, putting the Epinephelus coioides into a pond in which the salt degree of the water body is 0.8 percent for culturing, wherein the salt degree of the sea water is greater than 2.0 percent. By manually desalting and domesticating gradually, a pond culturing mode of the Epinephelus coioides is optimized so that the survival rate reaches over 70 percent. The yield of the Epinephelus coioides in each pot is over 150 kilograms; and the yield of the Epinephelus coioides of each mu of the pond is 500 kilograms.

Description

【Technical field】 [0001] The invention relates to a method for cultivating aquatic animals, in particular to a method for cultivating grouper. 【Background technique】 [0002] Grouper culture is mainly based on shallow sea cage culture and seawater pond culture. It has the advantages of strong stress resistance, fast growth, wide temperature and high-density breeding, and high feed utilization rate. In recent years, the scale of culture has been expanding continuously. Diseases, vibriosis, seawater melon worm disease and other diseases are serious, and the survival rate of grouper cultured in seawater is low, the survival rate of seedlings is less than 10%, and the survival rate of growing-up period is only 20%, which seriously restricts grouper Development of the farming industry. 【Content of invention】 [0003] The invention aims to provide a low-salinity cultured method for grouper with high survival rate and high breeding efficiency. [0004] The method for cultivatin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K61/00
CPCY02A40/81
Inventor 余德光麦平阳谢骏李望东胡光安王广军杨宇晴于方兆郁二蒙王海英龚望宝
Owner PEARL RIVER FISHERY RES INST CHINESE ACAD OF FISHERY SCI
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