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Method for breeding soft-shell crabs by buoyant raft

A soft-shell crab and floating raft technology, applied in fish farming, application, climate change adaptation, etc., can solve the problems of reducing stocking density, reducing equipment utilization, increasing the cost of breeding soft-shell crabs, etc. damage, large-scale effects

Inactive Publication Date: 2010-06-30
GUANGDONG OCEAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, reducing the stocking density will reduce the utilization rate of equipment per unit area and increase the cost of breeding soft shell crabs

Method used

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  • Method for breeding soft-shell crabs by buoyant raft
  • Method for breeding soft-shell crabs by buoyant raft
  • Method for breeding soft-shell crabs by buoyant raft

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] (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 (PVC) pipe 6 of diameter 4 centimeters, and a floating raft 18 is generally connected with each other by a plurality of 4 meters long PVC pipes 6, and every row is 5, forms 4 row and puts the box fence of crab box 5 (the width is just as far as the field of view at a glance). PVC pipe 6 road two ends cover PVC 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 accom...

Embodiment 2

[0027] (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 polyvinyl chloride (PVC) pipe 6 with a diameter of 6 centimeters, and a floating raft 18 is generally connected to each other by a plurality of 4-meter-long PVC pipes 6, with 5 in every row, forming 4 rows of enclosures for placing crab boxes 5 (the width is just as far as the field of view at a glance). The two ends of the PVC pipe 6 cover the PVC 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 (section) separat...

Embodiment 3

[0034] (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 (PVC) pipe 6 of diameter 7 centimeters, and a floating raft 18 is generally connected with each other by a plurality of 4 meters long PVC pipes 6, and every row is 5, forms 4 row and puts the box fence of crab box 5 (the width is just as far as the field of view at a glance). PVC pipe 6 two ends cover PVC 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 accommodat...

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Abstract

The invention relates to a method for breeding soft-shell crabs by a buoyant raft; the buoyant raft is built on the surface of larger or deeper water; net cages or porous boxes which are respectively provided with a single crab are respectively arranged on the buoyant raft; a bridge is built along the direction vertical to the buoyant raft; an air charging and discharging device and a sinker balance weight are installed in a plastic pipe of the buoyant raft; therefore, the soft-shell crabs can be bred. The method has the advantages of large scale, low cost, preventing the crabs from killing each other and reducing the damage risk of storm for breeding of the soft-shell crabs.

Description

technical field [0001] The invention belongs to the field of aquaculture, and in particular relates to a method for cultivating soft-shell crabs on floating rafts. Background technique [0002] Crab is an important raw seafood, but, because crab has a hard shell, it is very inconvenient to eat, and the edible part of crab is greatly reduced. Soft-shell crabs use the normal physiological molting of crabs. When the hard shell is shed and the soft shell has not hardened, it is processed to keep it in a soft shell state, and sold to customers for consumption. Because crabs do not ingest when moulting, they must also discharge all the food they ingested before. This makes there is almost no feces in the crab body, and the shell, gills and other parts are soft and edible. This not only reduces the trouble of shelling when eating crabs, but also greatly increases the edible portion. Now, in the world, the United States uses North American blue crabs to produce soft-shell crabs; ...

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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