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Method for breeding Litopenaeus Vannamei twice a year

A culture method and technology for white shrimp, applied in fish farming, application, climate change adaptation, etc., can solve the problems of low yield and low production cost, and achieve the effects of fast growth speed, short cycle and low pollution

Inactive Publication Date: 2014-07-02
TIANJIN KAIRUN FRESH WATER BREEDING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The advantages of extensive culture are low production cost, light pollution, and few diseases; the disadvantage is low yield and serious fish damage.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] 1. Pond conditions. Shrimp ponds should have sufficient water sources, good water quality, and no pollution, and the water quality should meet the requirements of GB11607. The bottom of the pool is flat, less silt, easy to enter and drain. The area is 3 mu, the optimum area is 3 mu, and the water depth is 1.8 meters. Each pond needs to be equipped with 2-3 aerators.

[0012] 2. Preparation before putting seedlings

[0013] 1. Disinfect the clear pond. For newly-built ponds, first soak in water, and then carry out drug disinfection; for shrimp ponds transformed from old ponds or fish ponds, they need to be exposed to dry ponds for 20 days to completely remove silt and weeds, and then use 80-100 kg / mu of quicklime to thoroughly disinfect.

[0014] 2. Cultivate basic bait. 5-7 days before the seedlings are released, apply 1 kg of microbial compound preparation EM original dew per mu of ponds. 2 days before the seedlings are released, apply an appropriate amo...

Embodiment 2

[0026] (1) The first crop: purchase 0.3-cm juvenile shrimp seedlings on April 20, enter the nursery greenhouse for desalination and temporary cultivation, and after 25 days, the shrimp seedlings will reach 1.5-cm, that is, on May 15, the external water temperature will reach 1.5-cm. Shrimp seedlings are put in at 18°C, and the stocking density is preferably 38,000 / mu.

[0027] (2) The second batch of shrimp seedlings is first surrounded by nylon cloth in a corner of the water inlet of the shrimp pond or puts a dense net cage in a large pond to desalinate for 7 days, and then puts it into the shrimp pond for cultivation. The second crop stocking density is 28,000 tails per mu, which should not be too high. On July 20, the feeding time for breeding was 80 days. By the beginning of October (because it is in the greenhouse, the water temperature can be kept above 18°C), there are between 40 and 45 adult shrimps.

[0028] (3) The temperature gradually drops in October, and then th...

Embodiment 3

[0030] (1) The first batch: Purchase 0.4cm larvae on April 20th, enter the seedling greenhouse for desalination and temporary cultivation, and after 25 days, the shrimps will reach 2cm, that is, when the outside water temperature reaches 18°C ​​on May 15th Shrimp seedlings are put in, and the stocking density is preferably 40,000 tails / mu.

[0031] (2) The second batch of shrimp seedlings is first surrounded by nylon cloth at a corner of the water inlet of the shrimp pond to set up a dense net cage in a large pond or a large pond for desalination for 8 days, and then put it into the shrimp pond for cultivation. The second crop stocking density is 30,000 tails per mu, which should not be too high. On July 20, the breeding time was 80 days. By the beginning of October (because it was in the greenhouse, the water temperature could be kept above 18°C), there were 45 adult shrimps.

[0032] (3) The temperature gradually drops in October, and then the heating pump is used to assist...

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PUM

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Abstract

The invention discloses a method for breeding Litopenaeus Vannamei twice a year. The method include the steps that in the first-time breeding, young Litopenaeus Vannamei larvae 0.3 cm-0.4 cm in size are purchased and enter a larva breeding greenhouse to carry out desalting temporary breeding, the larvae are thrown into a Litopenaeus Vannamei pond after 25 days when the sizes of the larvae range from 1.5 cm to 2 cm, and the external water temperature reaches 18 DEG C, and the released density properly ranges from 38,000 larvae per mu to 40,000 larvae per mu; in the second-time breeding, desalting temporary breeding is carried out on Litopenaeus Vannamei larvae for 7 days-8 days in a several-square-meter holding pond surrounded by nylon cloth at one corner of a water inlet of the Litopenaeus Vannamei pond or in small-mesh net cages sleeved in the large pond, then the larvae are placed into the Litopenaeus Vannamei pond to be bred, the second-time released density ranges from 28,000 larvae per mu to 30,000 larvae per mu, the number of adult Litopenaeus Vannamei ranges from 40 to 45 per cubic meter, the air temperature gradually drops in October, then the water temperature is kept at 16 DEG C through heating pumps in an assisted mode, and the Litopenaeus Vannamei larvae can be harvested when the external water temperature is lower than 6 DEG C-8 DEG C.

Description

technical field [0001] The invention discloses a two-crop culture method of Penaeus vannamei. Background technique [0002] Penaeus vannamei is recognized as one of the three excellent shrimp species with the highest farming output in the world today. The shrimp grows fast, is resistant to high density, has strong resistance to environmental changes, and has strong resistance to virus diseases, making it very suitable for industrial farming. [0003] At present, the culture method of Penaeus vannamei is extensive culture, that is, the stocking density is generally below 5 tails / m2. Shrimp ponds have a large area, generally 10-30 hectares (150-450 mu), with shallow average water depth and poor facilities. Extensive breeding does not require feeding, and relies entirely on the natural productivity of the waters to achieve ecological balance. This kind of production method is usually to throw seedlings many times a year, continuous production, and rarely change water. The y...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K61/00A01K61/59
CPCY02A40/81
Inventor 孙茜
Owner TIANJIN KAIRUN FRESH WATER BREEDING CO LTD
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