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Method for fattening wild blue crab

A technology of swimming crabs three warts and a breeding box, which is applied in the directions of fish farming, application, climate change adaptation, etc., can solve the problems of being easily restricted by the natural environment, high requirements on bait quality and water quality, and unfavorable for indoor fattening breeding, etc. The effect of survival rate, improving flavor and improving quality

Active Publication Date: 2019-01-25
李金兰
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the wild portunus trituberculatus picked out from fishing is used to living in the sea and is wild. It has high requirements on the quality of bait and water quality, which is not conducive to indoor fattening and breeding. If fattening in the ocean is used, it will be affected by the region and easily affected. Restricted by the natural environment, it is not convenient for temporary raising and fattening in various places

Method used

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  • Method for fattening wild blue crab
  • Method for fattening wild blue crab
  • Method for fattening wild blue crab

Examples

Experimental program
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Effect test

Embodiment 1

[0036] A method for fattening wild Portunus trituberculatus comprises steps as follows:

[0037] Step 1, put the wild portunus trituberculatus caught up to be fattened into an aqueous solution prepared with stable chlorine dioxide of 0.5 mg / liter and soak for 5 minutes to sterilize;

[0038] Step 2. Put the wild Portunus trituberculatus to be fattened into a separate breeding box with the corresponding label according to the specifications and domesticate it for 2 days, keep the water temperature in the breeding box at 12°C, and feed it 4 times a day during the domestication process, at 8:00 a.m. Artificial bait was fed once at 00, natural bait was fed once at 13:00 pm, artificial bait was fed once at 19:00 pm; natural bait was fed once at 23:00 pm, and the amount of bait fed each time was 2% of the crab's body weight;

[0039] Step 3. After domestication, keep the water temperature in the breeding box at 14°C on the first day, then raise the temperature by 1°C every day until...

Embodiment 2

[0044] A method for fattening wild Portunus trituberculatus comprises steps as follows:

[0045] Step 1, put the wild Portunus trituberculatus caught up to be fattened into an aqueous solution of 0.5 mg / L prepared with stable chlorine dioxide and soak for 10 minutes to sterilize;

[0046] Step 2. Domesticate for 3 days, specifically: set the wild portunus trituberculatus to be fattened to the first specification according to the empty shell crab or lean crab with a weight of 120-150g, and put them in the same group of separate breeding boxes with different labels Medium breeding; according to the weight of 151-200g empty shell crabs or lean crabs, set the second specification, and put them in the same group of separate breeding boxes with different labels for breeding; according to the weight of 201-300g empty shell crabs or lean crabs Crabs are set to the third specification, and they are placed in the same group of separate breeding boxes with different labels for breeding. ...

Embodiment 3

[0055] A method for fattening wild Portunus trituberculatus comprises steps as follows:

[0056] Step 1, put the wild Portunus trituberculatus caught up to be fattened into an aqueous solution of 0.5 mg / L prepared with stable chlorine dioxide and soak for 10 minutes to sterilize;

[0057] Step 2. Domesticate for 3 days, specifically: set the wild portunus trituberculatus to be fattened to the first specification according to the empty shell crab or lean crab with a weight of 120-150g, and put them in the same group of separate breeding boxes with different labels Medium breeding; according to the weight of 151-200g empty shell crabs or lean crabs, set the second specification, and put them in the same group of separate breeding boxes with different labels for breeding; according to the weight of 201-300g empty shell crabs or lean crabs Crabs are set to the third specification, and they are placed in the same group of separate breeding boxes with different labels for breeding. ...

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Abstract

The invention discloses a method for fattening a wild three-spotted crab. The method comprises the following steps: the first step of sterilizing and disinfecting the wild blue crab; the second step of domesticating the wild blue crab into a separate breeding tank with a corresponding label according to the specification for 2-3 days, keeping the water temperature in the breeding tank at 12-15 DEGC and feeding 4 times a day during the domestication process, wherein the amount of a bait fed each time is 2-3% of the crab weight; the third step of keeping the water temperature in the breeding tank at 14 DEG C in the first day after domestication, then raising the temperature by 1 DEG C every day until the water temperature reaches 21 DEG C, maintaining the water temperature at 21 DEG C afterthat, feeding 3 times in the first day, and then feed twice a day, wherein the amount of the bait fed each time is 4-5% of the crab weight; the fourth step of conducting fattening breeding for 15-25days for marketing. According to the method, the fattening survival rate of the high wild blue crab can be improved, and the crab meat flavor of the blue crab can be favorably improved by means of gradual increase of the breeding water temperature.

Description

technical field [0001] The invention relates to the technical field of portunus artificial cultivation, more specifically, the invention relates to a method for fattening wild portunus trituberculatus. Background technique [0002] Swimming crab is an important economic crab in the coast of China, and its scientific name is "Squat". Because the head and breastplate is in the shape of a shuttle, it is named. There are three protrusions in the center of the carapace, so it is also called "three-spotted swimming crab". Portunus trituberculatus is an omnivorous animal, and likes to eat shellfish, fresh miscellaneous fish, small miscellaneous shrimp, etc., and also eats algae buds, marine animal carcasses and rotting aquatic plants. And different growth stages, feeding habits are different, in the young crab stage tends to be omnivorous, and the larger the individual, the more carnivorous. Usually eat less during the day and eat a lot in the evening and night. But when the wa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K61/59A01K63/00
CPCA01K61/59A01K63/003Y02A40/81
Inventor 邹圆圆
Owner 李金兰
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