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A method of cultivating strengthened tongue sole fry using biofloc technology
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A technology of biofloc and semi-smooth tongue sole, which is applied in application, fish farming, animal feed, etc., can solve the problems of immature technology and achieve the effect of enhanced disease resistance and survival rate
Inactive Publication Date: 2017-10-13
DALIAN BAOFA SEAFOOD
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Summary
Abstract
Description
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Problems solved by technology
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Problems solved by technology
Although the concept of industrial production of biofloc technology (BFT) was put forward in the early 1980s, the technology is still immature
Method used
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Experimental program
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Effect test
Embodiment 1
[0022] 1. Cultivate biofloc
[0023] (1) Pump sand-filtered seawater into multiple cultivation pools, each with a volume of 10m 3 .
[0024] (2) Add carbon and nitrogen sources to the cultivation pool so that the total carbon content in the water is 5.5mg / L, the total nitrogen content is 0.55mg / L, and the carbon-nitrogen ratio is 10:1. Wherein, the carbon source used is syrup and starch (weight ratio 3:1), and the nitrogen source used is soybean cake powder.
[0025] (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.
[0026] (4) When the total suspended solids (TSS) in the culture tank reach 100mg / L, 300mg / L, and 500mg / L respectively, it is ready for use.
[0027] 2. Fertilized eggs and artificial incubation
[0028] The technology commonly used in th...
Embodiment 2
[0035] Cultivate biofloc
[0036] (1) Pump sand-filtered seawater into multiple cultivation pools, each with a volume of 20m 3 .
[0037] (2) Add carbon and nitrogen sources to the cultivation pool so that the total carbon content in the water is 15mg / L, the total nitrogen content is 1.25mg / L, and the carbon-nitrogen ratio is 12:1. Wherein, the carbon source used is brown sugar and molasses (weight ratio 2:3); the nitrogen source used is ammonium salt and nitrate (weight ratio 1:1).
[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) in the culture tank reach 100mg / L, 300mg / L, and 500mg / L respectively, it is ready for use.
[0040] 2. Fertilized eggs and artificial incubation
[0041] The tech...
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Abstract
The invention discloses a method for cultivating and reinforcing fries of cynoglossus semilaevis gunther using biological floccules. The method comprises the following steps of extracting water for cultivation in to a cultivation unit; adding a carbon source and / or a nitrogen source in to a cultivation pond; fully aerating water in the cultivation ponds during cultivation of biological floccules; making the cultivation pond stand by when the total suspended solid (TSS) of the water in the cultivation pond is within the range from 100mg / L to 500mg / L; transferring fries longer than 1 cm of cynoglossus semilaevis gunther into the cultivation unit containing cultivated biological floccules to reinforce at the first stage, and adding a carbon source continuously during the reinforcement until the fries are about 2cm; reinforcing the cultivated fries which are about 2cm at the second stage when the total suspended solid of the water in the cultivation unit is within the range from 100mg / L to 200mg / L; and adding a carbon source and a nitrogen source continuously during the reinforcement until the fries are about 3cm; and stopping until the total suspended solid of the water in the cultivation unit is within the range from 250mg / L to 500mg / L. According to the method for cultivating and reinforcing fries of cynoglossus semilaevis gunther using biological floccules, the biological floccules are added to reinforce the fries, the survival rate of the fries is raised by 25% to 60% and the disease resistance is enhanced by 30% to 70% compared with those of traditional fries.
Description
technical field [0001] The invention relates to an artificial nursery technology of Cynoglossus semilaevis Gunther, belonging to the field of aquaculture, in particular to a method for cultivating Cynoglossus semilaevis Gunther fry with added standards and strong stress resistance by utilizing biological floc technology. Background technique [0002] Cynoglossus semilaevis Gunther (Cynoglossus semilaevis Gunther) is a large demersal fish in warm-temperate coastal waters. It inhabits the coastal waters of China all the year round. It has a wide range of temperature and salt and can adapt to changing environmental conditions. Semi-smooth tongue sole has the characteristics of fast growth, large size, delicious taste, high meat yield, smooth taste, and rich nutrition. It is a high-protein economic fish. After years of research and research, breakthroughs have been made in the artificial breeding technology of tongue sole half-smooth, and the breeding and breeding techniques hav...
Claims
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Application Information
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