Method for pond-classification cultivation of scylla paramamosian

A technology of mud crabs and ponds, which is applied in the breeding field of mud crabs to achieve the effects of easy management, large pond area, and reduced shelling and killing

Inactive Publication Date: 2012-07-04
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a method for the hierarchical cultivation of mud crabs in ponds with higher survival rate and output for the problems existing in the current status of mud crab culture.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] (1) First-level culture (seed rough standard stage): Cultivate the first-stage larvae into buckle crabs. It was carried out in a pond with an area of ​​2 mu. The density of seedlings in the first stage was 5000 / mu. After about 40 days of breeding management, the crabs with a carapace width of about 2.5 cm were cultivated, and the survival rate was about 75%.

[0020] (2) Secondary culture (deduction crab culture stage): the deduction crab is raised to the stage of reproduction and shelling. It is carried out in a pond with an area of ​​10 mu, and the crabs with neat specifications are selected, and the stocking density is 1000 / mu. After about 70 days of breeding, the crabs are grown into small-sized blue crabs with a weight of 150-200g. The blue crabs at this stage are about to enter reproductive shelling (mostly without mating), the survival rate is about 70%, and the yield per mu can reach 120kg. The blue crabs at this stage can be sold directly, or can continue to e...

Embodiment 2

[0023] (1) First-level culture (seed rough standard stage): Cultivate the first-stage larvae into buckle crabs. It is carried out in a pond with an area of ​​1 mu. The density of seedlings in the first phase is 10,000 / mu. After about 40 days of breeding management, the doubled crabs with a width of about 2.5 cm are cultivated, and the survival rate is about 65%.

[0024] (2) Secondary culture (deduction crab culture stage): the deduction crab is raised to the stage of reproduction and shelling. It is carried out in a pond with an area of ​​5 mu, and the crabs with neat specifications are selected, and the stocking density is 800 / mu. After about 70 days of breeding, the crabs are grown into small-sized blue crabs with a weight of 150-200g. The blue crabs at this stage are about to enter reproductive shelling (mostly without mating), the survival rate is about 75%, and the yield per mu can reach 100kg. The blue crabs at this stage can be sold directly, or can continue to grow i...

Embodiment 3

[0027] (1) First-level culture (seed rough standard stage): Cultivate the first-stage larvae into buckle crabs. It is carried out in a pond with an area of ​​1 mu. The density of seedlings in the first stage is 8000 / mu. After about 40 days of breeding management, the doubled crabs with a width of about 2.5 cm are cultivated, and the survival rate is about 70%.

[0028] (2) Secondary culture (deduction crab culture stage): the deduction crab is raised to the stage of reproduction and shelling. It is carried out in a pond with an area of ​​15 mu, and the crabs with neat specifications are selected, and the stocking density is 600 / mu. After about 70 days of breeding, the crabs are grown into small-sized blue crabs with a weight of 150-200g. The blue crabs at this stage are about to enter reproductive shelling (mostly without mating), the survival rate is about 70%, and the yield per mu can reach 80kg. The blue crabs at this stage can be sold directly, or can continue to grow int...

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Abstract

A method for pond-classification cultivation of scylla paramamosian relates to a cultivation method of the scylla paramamosian. The method comprises cultivation of a scylla paramamosian crab seeds intermediate-cultivation stage during which the scylla paramamosian crab seeds are placed in a pond to be cultivated into juvenile crabs; juvenile crab cultivation during which the juvenile crabs are placed in a pond to be cultivated into small-specification green crabs of 150-200g; and finished product cultivation during which the small-specification green crabs of 150-200g are placed in a pond to be cultivated into large-specification green crabs of over 300g. The method not only has the advantage of facilitating cultivation management, but also avoids the hazards of disease spread, bottle material ruin and the like which are caused by long-term cultivation in a pond.

Description

technical field [0001] The invention relates to a method for cultivating mud crabs, in particular to a method for graded cultivation of mud crabs in ponds. Background technique [0002] Scylla paramamosain is the main marine cultured crab in the southern provinces of my country. In recent years, blue crab farming has developed vigorously, with a breeding area of ​​31,000 hectares and an annual output of 116,000 tons (China Fishery Statistical Yearbook, 2010), and has developed into an important marine aquaculture industry in my country. The breeding forms of blue crabs include pond culture, fence culture, seine culture, earthen pot culture, hanging cage culture and so on. Among them, pond culture is the most important farming mode. Pond culture means that the cultivation of crabs from seedlings to commercial crabs is carried out in ponds. At present, the seedlings of blue crabs are mainly first-stage larvae, which generally need to be raised for 4 to 7 months before they ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K61/00
CPCY02A40/81
Inventor 叶海辉王桂忠巩杰林琼武李少菁
Owner XIAMEN UNIV
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