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Method for pond culture of cynoglossus semilaevis gunther by means of biofloc technique

A technology of biofloc and semi-smooth tongue sole, applied in fish farming, application, animal feed, etc., can solve the problems of high cost and limited promotion, and achieve the effect of less feeding, less disease and high yield

Inactive Publication Date: 2015-11-18
DALIAN BAOFA SEAFOOD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The recirculating aquaculture system saves water, but the cost is high, which limits its further promotion

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] 1. Select a breeding pond

[0034] Breeding ponds require easy access and drainage, and a flat bottom.

[0035] 2. Cultivate biofloc

[0036] (1) Pump sand-filtered seawater into multiple cultivation pools, each with a volume of 10m 3 .

[0037] (2) Add carbon source and nitrogen source to the cultivation tank, so that the total content of carbon in the water body is 10mg / L, the total content of nitrogen is 0.5mg / L, and the carbon-nitrogen ratio is 20:1. Wherein, the carbon source used is composed of molasses and molasses (weight ratio 2:3); the nitrogen source used is composed of bran and corn steep liquor (weight ratio 3:1).

[0038] (3) During the cultivation process of biofloc, the water body in the cultivation tank should be fully aerated, the dissolved oxygen in the water body should be maintained at 6 mg / L, the pH value should be maintained at 7.5, and the temperature should be maintained above 20°C.

[0039] (4) When the total suspended solids (TSS) of the w...

Embodiment 2

[0054] 1. Select a breeding pond

[0055] Requirements for breeding ponds are the same as 1..

[0056] 2. Cultivate biofloc

[0057] (1) Pump sand-filtered seawater into multiple cultivation pools, each with a volume of 20m 3 .

[0058] (2) Add carbon source and nitrogen source to the cultivation pool, so that the total content of carbon in the water body is 5.5mg / L, the total content of nitrogen is 0.55mg / L, and the ratio of carbon to nitrogen is 10:1. Wherein, the carbon source used is composed of brown sugar and starch (1:1 by weight); the nitrogen source used is yeast powder.

[0059] (3) During the cultivation process of biofloc, the water body in the cultivation tank should be fully aerated, the dissolved oxygen in the water body should be maintained at 5mg / L, the pH value should be maintained at 7.0, and the temperature should be maintained above 20°C.

[0060] (4) When the total suspended solids (TSS) of the water body in the culture pond reaches 100mg / L-500mg / L, it ...

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Abstract

The invention discloses a method for pond culture of cynoglossus semilaevis gunther by means of the biofloc technique. The method comprises the steps of biofloc cultivation and breeding. In the biofloc cultivation process, aquaculture water is extracted to a cultivation unit; a carbon source and / or nitrogen source is added to a culture pond to enable the total content of carbon in water to be 5.5-45 mg / L, the total content of nitrogen in water to be 0.55-2.25 mg / L and carbon nitrogen ratio to be 10-20:1; water in the culture pond needs to be fully aerated, dissolved oxygen in water is maintained to be 5.5-8.5 mg / L, pH value is maintained to be 6-8, and temperature is maintained to be over 20 DEG C; when the total suspended solid in water in the culture pond reaches 100-500 mg / L, water is prepared for use. In the breeding process, cynoglossus semilaevis gunther is placed in the cultivation unit with released density being 10-150 pieces / m<2>. Compared with ordinary methods, the method has the advantages that water changing frequency is low, bait feeding amount is small, and obtained cynoglossus semilaevis gunther rarely gets sick and is high in yield.

Description

technical field [0001] The invention relates to a culture technology of Cynoglossus semilaevis Gunther, belongs to the field of aquaculture, and relates to a method for cultivating Cynoglossus semilaevis Gunther in a pond by using biofloc technology. Background technique [0002] Semi-smooth tongue sole (Cynoglossus semilaevis Gunther) belongs to the order Pleuriformes, the family Cynoglossus semilaevis, and the genus Cynoglossus semilaevis. The body is flat and tongue-shaped. It is a large warm-temperate offshore bottom fish. It lives in the coastal waters of China all the year round. It has the characteristics of wide temperature, wide salt and adaptability to changeable environmental conditions. Semi-smooth tongue sole has few natural resources, and it has the characteristics of fast growth, large individual, delicious taste, high meat yield, smooth taste and rich nutrition. [0003] Semi-smooth tongue sole adapts to a very wide temperature range. It can survive winter a...

Claims

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Application Information

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IPC IPC(8): A01K61/00A23K1/18A23K1/00
CPCY02A40/81A01K61/00
Inventor 曹晨晨杨大佐宋国斌宋国联齐晓陆
Owner DALIAN BAOFA SEAFOOD
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