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Method for desalination culture of scatophagus argus

A technology for money fish and fry, which is applied in fish farming, climate change adaptation, application, etc., can solve the problem of inability to cultivate desalinated fry and other problems, and achieve the effects of short cultivation period, fast desalination rate and fast aging effect.

Inactive Publication Date: 2018-11-06
GUANGDONG OCEAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a method for desalinated money fish cultivation, to solve the problem that desalinated seedlings cannot be cultivated in the above-mentioned background technology, realize full freshwater culture, reduce the cost of culture, and improve the problem of greater production efficiency

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Comparison of different fade rates

[0023] The vigorous fish fry with a body length of (20.00 ± 2.00) mm were selected for temporary breeding at a salinity of 30‰. Set up 3 parallel groups, a total of 6 groups, 50 goldfish in each group, placed in about 0.3m³ of seawater with a salinity of 30‰ (the volume of the test tank is 0.5m³), and the salinity desalination rate is -2.5‰ / 1h, it takes 10 hours to desalinate to 2.5‰ salinity, and then suspend adding fresh water to further reduce the salinity. After maintaining the salinity of 2.5‰ for 2 days, slowly reduce the salinity at -1‰ / 24h every day until it is completely desalinated. After 2 days of temporary cultivation in full fresh water, the desalinated fish fry can be put into the pond to realize freshwater culture such as large ponds or high-level ponds. The experimental results showed (Table 1) that the salinity of the golden fish was desalinated from 30‰ to 2‰ within 10 hours, and the overall survival rate was 93....

Embodiment 2

[0026] Comparison of growth indicators between freshwater and marine aquaculture of money fish

[0027] Put the desalinated fish fry with a body length of (20.00±2.00) mm in an outdoor pool (20 m 3 ) medium freshwater culture; after disinfection, the fish fry with a body length of (20.00±2.00)mm that have not been desalinated were cultured in a high-level pond with a salinity of 30‰; two fish ponds were fed with two meals a day, and each meal was fed with The amount of feeding is based on eating in half an hour, and the water in the two fish ponds is changed regularly at the same time, and the residual bait feces and dirt at the bottom are removed. After 330 days of feeding, 10 fish were randomly taken out from the freshwater and seawater fish ponds, and the body length, total length and body weight were measured. It can be seen from Table 2 that the average body length of freshwater fish cultured after desalination is 15.2 cm, the average total length is 17.6 cm, and the ave...

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Abstract

The invention discloses a method for desalination culture of scatophagus argus. Due to seawater temporary culture and rapid gradient desalination treatment, the desalination speed is minus 2%. / 1h, thesurvival rate obtained after complete desalination reaches 92.7%, and meanwhile the rapid growth advantage is shown for desalination seedling culture. According to the method for desalination cultureof scatophagus argus, desalinated scatophagus argus fry can be directly subjected to desalination culture, the culture cost is greatly lowered, diversified efficient desalination of seawater fish isachieved, meanwhile, an important approach is supplied to energy-saving low-carbon green development industry structure upgrading for the culture variety, inland development of scatophagus argus culture is achieved, diversified culture modes are achieved, and the culture scale is enlarged.

Description

technical field [0001] The invention relates to the technical field of aquaculture, in particular to a method for desalination and cultivation of money fish. Background technique [0002] Money fish belongs to perciformes, money fish family, money fish genus, commonly known as golden drum. Money fish is a rare seawater economic fish with ornamental and edible value. It is deeply loved by consumers because of its delicious taste, tender meat and high nutritional value. Therefore, the artificial large-scale development of money fish has significant economic and social benefit potential. [0003] Through desalination aquaculture, the aquaculture area is extended to the terrestrial freshwater environment, which greatly reduces the excessive dependence of seawater species on the sea area, and effectively alleviates the contradiction between seawater aquaculture and environmental and social development. Through the desalination research of seawater seedlings, high-quality seedli...

Claims

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Application Information

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IPC IPC(8): A01K61/10
CPCA01K61/10Y02A40/81
Inventor 朱春华陈华谱郑煜林王耀嵘杨尉江东能田昌绪邓思平李广丽
Owner GUANGDONG OCEAN UNIVERSITY
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