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Method for cultivating blue crabs with heavy shells on floating rafts

A technology for floating rafts and crabs, which is applied to the field of cultivating heavy-shelled mud crabs on floating rafts, can solve problems such as limiting the production of heavy-shelled crabs, and achieve the effects of low cost, high efficiency and large scale.

Inactive Publication Date: 2010-09-22
GUANGDONG OCEAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This greatly limits the production of heavy-shell crabs

Method used

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  • Method for cultivating blue crabs with heavy shells on floating rafts
  • Method for cultivating blue crabs with heavy shells on floating rafts
  • Method for cultivating blue crabs with heavy shells on floating rafts

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] (1) floating rafts 18 are arranged along the length direction of the pond, and the length is half of the length of the pond. Floating raft 18 is made of the polyvinyl chloride pipe 6 of diameter 4 centimetres, and a floating raft 18 is generally connected to each other by many 4 meters long polyvinyl chloride pipes 6, and every row is 5, forms 4 row and puts the box fence of crab box 5 ( The width is exactly the field of view at a glance). The two ends of the polyvinyl chloride pipe 6 cover the polyvinyl chloride cap 4 to prevent water from entering. The length of the floating raft 18 depends on the length of the pond. The floating raft 18 is divided into small units of 110 x 110 cm each, bound and connected by a narrow piece of wood (2.5 cm wide x 2.0 cm thick x 110 cm long), or the wood is replaced by a small polyvinyl chloride pipe with a smaller diameter than the main pipe . A piece of wood or a small tube is tied horizontally to the main tube. Each part (sectio...

Embodiment 2

[0028] (1) floating rafts 18 are arranged along the length direction of the pond, and the length is half of the length of the pond. Floating raft 18 is made of the polyvinyl chloride pipe 6 of diameter 6 centimetres, and a floating raft 18 is generally connected to each other by many 4 meters long polyvinyl chloride pipes 6, and every row is 5, forms 4 row and puts the box fence of crab box 5 ( The width is exactly the field of view at a glance). The two ends of the polyvinyl chloride pipe 6 cover the polyvinyl chloride pipe cap 4 to prevent water from entering. The length of the floating raft 18 depends on the length of the pond. The floating raft 18 is divided into small units of 110 x 110 cm each, bound and connected by a narrow piece of wood (2.5 cm wide x 2.0 cm thick x 110 cm long), or the wood is replaced by a small polyvinyl chloride pipe with a smaller diameter than the main pipe . A piece of wood or a small tube is tied horizontally to the main tube. Each part (s...

Embodiment 3

[0035] (1) floating rafts 18 are arranged along the length direction of the pond, and the length is half of the length of the pond. Floating raft 18 is made of the polyvinyl chloride pipe 6 of diameter 7 centimetres, and a floating raft 18 is generally connected with each other by many 4 meters long PVC pipes 6, and every row is 5, forms 4 row and puts the box rail of crab box 5 (the width just A glance past the field of view). Polyvinyl chloride pipe 6 two ends cover polyvinyl chloride cap 4, to prevent water from entering. The length of the floating raft 18 depends on the length of the pond. The floating raft 18 is divided into small units of 110 x 110 cm each, bound and connected by a narrow piece of wood (2.5 cm wide x 2.0 cm thick x 110 cm long), or the wood is replaced by a small polyvinyl chloride pipe with a smaller diameter than the main pipe . A piece of wood or a small tube is tied horizontally to the main tube. Each part (section) separated by wood can accommod...

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Abstract

The invention relates to a method for cultivating blue crabs with heavy shells on floating rafts, comprising the following steps of: building the floating rafts on more than 1 mu of water surface or the surface of a water body with the depth greater than 1 meter and placing meshed cages or boxes with holes on the floating rafts, wherein the meshed cages or the boxes with holes are respectively filled with single crabs; building a bridge in the direction perpendicular to the floating rafts; installing an aerating device and a deflating device and a heavy balance weight on plastic pipes of the floating rafts; and then cultivating the crabs with the heavy shells. The invention has the advantages of high efficiency, large scale and low cost, can prevent the crabs from killing each other and reduce the risk of cultivation losses of the crabs with the heavy shells due to storms.

Description

technical field [0001] The invention belongs to the field of aquaculture, and relates to a method for cultivating heavy-shell blue crabs on floating rafts. Background technique [0002] Crab is a typical representative of raw seafood. Heavy-shell crabs are crabs whose new shells have formed but the old shells have not yet been cast off. Although all kinds of crabs have heavy-shell crabs, general heavy-shell crabs mainly refer to the heavy-shell crabs of blue crabs (other types of heavy-shell crabs have little economic value because they are not resistant to storage and transportation). Since the old shell is about to slough off, the old shell is not as hard as before after decalcification, so it is easy to remove. After removing the old shell, heavy shell crabs are almost the same as soft shell crabs and have similar advantages to soft shell crabs. However, the survival time of heavy-shell crabs out of water is much longer than that of soft-shell crabs after molting, whic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K61/00
CPCY02A40/81
Inventor 廖永岩
Owner GUANGDONG OCEAN UNIVERSITY
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