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Nutrient salt balancing method for low-salinity circulating water used for penaeus vannamei culture
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A technology of white prawns and low salinity, which is applied in the fields of application, fish farming, climate change adaptation, etc., can solve the problems of lack of nutrients, slow growth of shrimp, low survival rate, etc. The effect of widening the range of farming
Inactive Publication Date: 2020-02-28
TIANJIN UNIVERSITY OF SCIENCE AND TECHNOLOGY +1
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Abstract
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Problems solved by technology
In order to alleviate the pollution of seawater aquaculture to the coastal environment and promote the development of aquaculture in inland saline-alkaline areas, the inland low-salinity aquaculture of desalinated seedlings has become an important development direction of aquaculture. In order to further improve economic benefits, low-salinity The cultivation of Penaeus vannamei in circulating water has gradually developed, but during the cultivation process, it was found that the growth of the shrimp is slow, the survival rate is low, and the yield is low. The reason is the lack of nutrients and imbalance in the water body.
Method used
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Embodiment 1
[0017] A low-salinity circulating water nutrient balance method for Penaeus vannamei culture, the main ion concentration in the deployment culture water is: calcium ion 0.3g / L, magnesium ion 1.0g / L, potassium ion 0.09g / L, Sodium ion 3g / L, chloride ion 2g / L, sulfate ion 0.6g / L, carbonate ion 0.04g / L, bicarbonate ion 0.3g / L, bromide ion 0.04g / L, borate ion 0.05g / L L, the ratio of calcium ions to magnesium ions is 1:3.33.
[0018] Feed 5,000 heads / jin of vannamei for 60 days, the average prawn is 15.625g / head, the survival rate is 85.3%, and the yield of prawns is 13.33 catties / m 3 .
Embodiment 2
[0020] A low-salinity circulating water nutrient balance method for Penaeus vannamei culture, the main ion concentration in the deployment of the culture water is: calcium ion 0.4g / L, magnesium ion 1.5g / L, potassium ion 0.12g / L , sodium ion 4g / L, chloride ion 3g / L, sulfate ion 1.0g / L, carbonate ion 0.03, bicarbonate ion 0.4g / L, bromide ion 0.03g / L, borate ion 0.1g / L, The ratio of calcium ions to magnesium ions is 1:3.75.
[0021] 5,000 heads / jin of Penaeus vannamei were raised for 60 days, the average amount of prawns was 16.13g / head, the survival rate was 86.5%, and the yield of prawns was 13.95 catties / m 3 .
Embodiment 3
[0023] A low-salinity circulating water nutrient balance method for Penaeus vannamei culture, the main ion concentration in the deployment of the culture water is: calcium ion 0.25g / L, magnesium ion 1.2g / L, potassium ion 0.15g / L , sodium ion 5g / L, chloride ion 1.5g / L, sulfate ion 0.8g / L, carbonate ion 0.02, bicarbonate ion 0.2g / L, bromide ion 0.02g / L, borate ion 0.08g / L , the ratio of calcium ions to magnesium ions is 1:4.80.
[0024] Feed 4,500 heads / catties of vannamei for 60 days, with an average of 15.15g / head of prawns, a survival rate of 87.3%, and an output of 13.26 catties / m 3 .
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Abstract
The invention discloses a nutrient salt balancing method for low-salinity circulating water used for penaeus vannamei culture. The nutrient salt balancing method is realized by adjusting the concentration of main ions. The main ion concentrations of the water body are: 0.2-0.4g / L of calciumion, 0.6-1.5g / L of magnesiumion, 0.07-0.15g / L of potassium ion, 3-5g / L of sodium ion, 2-5g / L of chloride ion, 0.5-1g / L of sulfate ion, 0.02-0.04g / L of carbonate ion, 0.2-0.5g / L of bicarbonate ion, 0.02-0.04g / L of bromide ion and 0.05-0.1g / L of borate ion; and the ratio of the calcium ion to magnesium ion is 1: 3-5. The nutrient salt balancing method of the low-salinity circulating water is used for penaeus vannamei culture, the yield of the penaeus vannamei reaches 6-7kg / m3, the survival rate of the penaeus vannamei is high, the growth is fast, and the culture range of the penaeus vannamei is effectively widened, so that the method plays a greater role in promoting the development of the culture ofthe penaeus vannamei.
Description
technical field [0001] The invention belongs to the field of aquaculture, and in particular relates to a method for balancing nutrients in low-salinity circulating water for the cultivation of Penaeus vannamei. Background technique [0002] Vannamei is widely distributed in the coastal waters of the Pacific Ocean from northern Peru to Sanora, Mexico, and is most concentrated in Ecuador. As a euryhalinecrustacean, Penaeus vannamei can adapt to the salinity range of 0.5-40. In order to alleviate the pollution of seawateraquaculture to the coastal environment and promote the development of aquaculture in inland saline-alkaline areas, the inland low-salinity aquaculture of desalinated seedlings has become an important development direction of aquaculture. In order to further improve economic benefits, low-salinity The cultivation of Penaeus vannamei in circulating water has been gradually developed. However, during the cultivation process, it was found that the growth of the ...
Claims
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Application Information
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Patent Type & Authority Applications(China)
IPC IPC(8): A01K61/59
CPCA01K61/59Y02A40/81
Inventor 崔青曼张玉袁春营陈焕龙
Owner TIANJIN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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