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Small clean waters breeding method for litopenaeus vannamei

A technology for prawns vannamei and prawns, which is applied to the field of clear water cultivation of prawns in small water bodies, can solve the problems of affecting the quality of shrimp fry and shrimp farming products, affecting the success rate of farming, and immunity to shrimp fry diseases, etc. The effect of reducing disease or immunity decline, easy operation, and reducing water pollution

Inactive Publication Date: 2007-03-14
GUANGDONG HENGXING GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, with the increase of farming scale and the aggravation of water environment pollution, diseases in the culture process of Litopenaeus vannamei also occur from time to time
The reason is that the lack of healthy and high-quality Litopenaeus vannamei seedlings in aquaculture is an important factor affecting the success rate of aquaculture
At present, in the production of Litopenaeus vannamei from nauplius to larval stage, the method of raising seedlings in large water bodies and concentrated water is mainly used. This method mainly uses artificial synthetic bait to feed shrimp larvae, which is easy to pollute the water quality and cause shrimp Illness or weakened immunity due to stress
In addition, in order to reduce the disease organisms in the polluted water body and improve the success rate of seedlings, antibiotics are often used in the seedling process, which also seriously affects the quality of shrimp seedlings and even the quality of final shrimp farming products.
At present, there is no technology to raise Litopenaeus vannamei seedlings by controlling water quality and feeding algae, yeast and other biological baits in small water bodies during the stage from nauplii to larvae.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] 1) Put high-quality and healthy Litopenaeus vannamei nauplii into a circular aquarium with a size of 1 cubic meter at a density of 150,000 larvae per cubic meter of water. The seawater used in the aquarium is pre-treated by sand filtration, ozone and ultraviolet disinfection, and then filtered through filter membranes with pore sizes of 10, 1.0, and 0.5 μm in sequence.

[0017] 2) Add Chaetoceros and yeast when the prawn larvae develop to the sixth stage, so that the density of Chaetoceros is constant at 10,000 cell / mL, and the density of yeast is constant at 0.25g / m 3 .

[0018] 3) When the prawn larvae develop to the first stage of zoan larvae (Z1), add chaetoceros to a density of 50,000 cells / mL, add algae for 12 hours, and then press 0.25 g / m 3 The ratio is added to the yeast. Observe with a microscope every 4 hours, calculate the number of algae, keep the density of algae at 50,000 cells / mL, and at the same time, keep the density of yeast at 0.25g / m 3 .

[0019...

Embodiment 2

[0024] 1) Put high-quality and healthy Litopenaeus vannamei nauplii into a circular aquarium with a size of 1 cubic meter at a density of 200,000 larvae per cubic water body. The seawater used in the aquarium is pre-treated by sand filtration, ozone and ultraviolet disinfection, and then filtered through filter membranes with pore sizes of 10, 1.0, and 0.5 μm in sequence.

[0025] 2) When the larvae develop to the 6th stage larvae, add Sclerotinia and yeast, so that the density of Sclerostenae is constant at 10,000 cell / mL, and the density of yeast is constant at 0.25g / m 3 .

[0026] 3) When the prawn larvae develop to the first stage of zoan larvae (Z1), add Sclerotinia to a density of 45,000 cells / mL, add algae for 12 hours, and then press 0.25g / m 3 The ratio is added to the yeast. Observe with a microscope every 6 hours, calculate the number of algae, keep the density of algae at 45,000 cells / mL, and at the same time, keep the density of yeast at 0.25g / m 3 .

[0027] 4)...

Embodiment 3

[0032] 1) Put high-quality and healthy Litopenaeus vannamei nauplii into a circular aquarium with a size of 1 cubic meter at a density of 180,000 larvae per cubic water body. The seawater used in the aquarium is pre-treated by sand filtration, ozone and ultraviolet disinfection, and then filtered through filter membranes with pore sizes of 10, 1.0, and 0.5 μm in sequence.

[0033] 2) When the prawn larvae developed to the 6th stage larvae, add Trichophytes and yeast, so that the density of Sclerostenae was constant at 10,000 cell / mL, and the density of yeast was constant at 0.25 g / m3.

[0034] 3) When the prawn larvae have developed to the first stage of zoan larvae (Z1), add Sclerostenae to a density of 50,000 cells / mL, add algae for 12 hours, and then add yeast at a rate of 0.25 g / m3. Observe with a microscope every 5 hours, calculate the number of algae, keep the density of algae at 50,000 cells / mL, and at the same time, keep the density of yeast at 0.25g / m3.

[0035] 4) W...

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Abstract

The invention relates to a small pool of clear water-breeding method of litopenaeus vannamei using in aquaculture industry, the method includes three key controlling progresses which are water conditioning control, fed diet controlling and synchronized quality control. The water conditioning progress is supported by that as follows: after the water is sterilized through sand filtration, ozone and ultraviolet, it must be filtered by turns through three different filter membrane the pore diameter of which are respectively 10,1.0,0.5 mum, and in the later period of nursery, 100 000 cell / ml chlorella must be invested into the water in order to control its quality; fed diet controlling is carried out through using bone of algae, algae and chaetoceros harvest worms far bait, investing and feeding artificial synthesized bait during the second stage of zoea larva; synchronized quality control will be synchronized through salinity tolerance test or qualified hunger tolerance that will be carried out after emergence.

Description

【Technical field】 [0001] The invention relates to a method for cultivating Litopenaeus vannamei seedlings in a small water body with clear water. 【Background technique】 [0002] Litopenaeus vannamei is an important seawater economic shrimp. Because of its fast growth, strong disease resistance, and high market value, it has been valued by aquaculture farmers. In recent years, the scale of farming has been increasing. However, with the increase of farming scale and the aggravation of water environment pollution, diseases in the culture process of Litopenaeus vannamei also occur from time to time. The reason is that the lack of healthy and high-quality Litopenaeus vannamei seedlings in aquaculture is an important factor affecting the success rate of aquaculture. At present, in the production of Litopenaeus vannamei from nauplius to larval stage, the method of raising seedlings in large water bodies and concentrated water is mainly used. This method mainly uses artificial synt...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K61/00A01K61/02
CPCY02A40/81
Inventor 刘兴旺梁海鸥王华朗冯敏毅赵丽梅程成荣黄智成李治国韩垂旺
Owner GUANGDONG HENGXING GROUP
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