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A method of producing soft-shell crabs using wild crabs

A soft-shell crab and production pool technology, which is applied in application, fish farming, meat/fish preservation through freezing/cooling, etc., can solve the problems of high labor costs, difficulty in growing the soft-shell crab production industry, and low survival rate. To achieve the effect of reducing the labor intensity of workers

Active Publication Date: 2019-10-08
MARINE FISHERIES RES INST OF ZHEJIANG
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Problems solved by technology

[0003] At present, most soft-shell crabs are produced by subadult crabs in ponds. Due to the extremely low survival rate of swimming crabs in ponds, and the collection of soft-shell crabs must be controlled within 2 hours after moulting, which requires a lot of manual work for 24 hours. Continuous "stalking" and huge labor costs make it difficult for the soft-shell crab production industry to grow

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  • A method of producing soft-shell crabs using wild crabs
  • A method of producing soft-shell crabs using wild crabs
  • A method of producing soft-shell crabs using wild crabs

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[0019] Taking Portunus trituberculatus as an example below, the present invention will be further described in conjunction with the accompanying drawings.

[0020] Portunus trituberculatus is one of the important seawater economic crabs in my country, and is widely favored by consumers. August-September of each year is the fishing period of Portunus trituberculatus, which is also the peak season for reproductive moulting of wild Portunus. A considerable proportion of Portunus caught by fishermen are crabs that have not yet completed reproductive moulting, that is, subadult crabs. And the market price of this part of crabs is very low, therefore with sea catching swimming crabs as raw material, adopting the method of the present invention to produce swimming crabs can produce good economic benefits.

[0021] The molt cycle of Portunus trituberculatus is described in detail in the article "Stages of the Molt Cycle of Portunus trituberculatus" (Shen Jie). stage, D1 sub-stage, D2...

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Abstract

The invention discloses a method for producing soft-shell crabs by using wild crabs, which is used to reduce the production cost of soft-shell crabs and facilitate the promotion of soft-shell crab production. For different batches, put them into different holding ponds respectively; when the same batch of crabs in the holding ponds grow to the molting stage, put them into the production pond; And the soft-shell crabs that have become larger; the soft-shell crabs that have been salvaged are quick-frozen. In the present invention, the wild-caught crabs with the same body shape and the same molting period are intensively cultured. When the crabs of the same batch almost enter the molting period, the crabs that become larger after molting are salvaged by the sieve plate, that is, the production of soft-shell crabs is completed. ; Production cost or labor intensity of workers are all greatly reduced, which is conducive to the promotion of soft shell crab production.

Description

technical field [0001] The invention relates to the field of aquaculture, in particular to a method for producing soft-shell crabs using wild crabs. Background technique [0002] Crabs belong to crustaceans and rely on the process of molting to achieve morphological growth. The new shell of crabs is soft in a certain environment and time, commonly known as soft-shell crabs. Because crabs shed their old gills, food sacs, and viscera when they moult, soft-shell crabs are very clean and can be eaten all over the body, and the meat is tender and soft. Nutrients such as red pigment, chitin, and chitosan are excellent aquatic products. As a result, soft-shell crabs are often five times more expensive than hard-shell crabs and are in short supply in the market. [0003] At present, most soft-shell crabs are produced by subadult crabs in ponds. Due to the extremely low survival rate of swimming crabs in ponds, and the collection of soft-shell crabs must be controlled within 2 hour...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01K61/59A01K80/00A23B4/06
CPCA01K80/00A23B4/06Y02A40/81
Inventor 何杰许文军谢建军王庚申施慧汪玮
Owner MARINE FISHERIES RES INST OF ZHEJIANG
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