CN101755697A - Method for producing soft-shell crabs by using portunus trituberculatus crabs - Google Patents
Method for producing soft-shell crabs by using portunus trituberculatus crabs Download PDFInfo
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- CN101755697A CN101755697A CN200910214435A CN200910214435A CN101755697A CN 101755697 A CN101755697 A CN 101755697A CN 200910214435 A CN200910214435 A CN 200910214435A CN 200910214435 A CN200910214435 A CN 200910214435A CN 101755697 A CN101755697 A CN 101755697A
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- crab
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- portunus trituberculatus
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/80—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in fisheries management
- Y02A40/81—Aquaculture, e.g. of fish
Abstract
The invention relates to a method for producing soft-shell crabs by using portunus trituberculatus crabs. The method comprises the following steps of: taking 50-250g of portunus trituberculatus crabs as molting crab seedlings which do not finish reproductive molting from a natural sea area or a portunus trituberculatus crab culturing pool, conveying living bodies of the molting crab seedlings to a molting pool and culturing, and strictly preventing sudden changes of temperature and salinity, wherein the pH value of a soft-shell crab culturing pool is 7.0-8.8, the dissolved oxygen is more than 5mg/L, the salinity is 20-35, and the temperature is 18-30 DEG C; casting baits according to 5-10 percent of crab weight at nightfall or in the early morning everyday; checking the molting or death situation of the crabs every 2-4h, taking dead crabs out and putting away; moving the soft-shell crabs away; and quickly freezing and storing the living bodies, or storing the living bodies at low temperature for sale. The portunus trituberculatus crabs are the ocean crabs which have largest culturing scale in the world, and the species of the soft-shell culturing crabs are most plentiful. The individual of the portunus trituberculatus crabs is larger than that of the North American blue crabs and portunus pelagicus and is most suitable for culturing high-quality soft-shell crabs.
Description
Technical field
The invention belongs to aquaculture field, be specifically related to a kind of method of producing soft crab with Portunus trituberculatus Miers.
Background technology
Crab is important fresh and lively seafood, and still, because crab has hard shell, it is very inconvenient to taste, and the edible part of crab is significantly reduced.Soft crab utilizes the normal physiology shell of crab exactly, when soft shell does not also harden after duricrust is sloughed off, it is handled, and makes it keep the soft shell state, is sold in client's hand, and is edible for client.Owing to during the crab shell, do not ingest, the food of ingesting before it is all discharged, and this just makes does not almost have ight soil in the crab body.And parts such as shell, the gill all are soft, all edible.This not only reduces the trouble of peeling off when eating crab, and the crab edible part is increased greatly.
Now, mainly produce soft crab with North America blue crab, off-lying sea swimming crab, mud crab in the world, only the mud crab soft crab in Chinese Zhejiang produces, and just can produce nearly 3,000 ten thousand yuan output value in 1 year.
Portunus trituberculatus Miers is a large amount of important economic ocean crab classes of culturing to the north of the Taiwan Straits marine site, also is that largest marine economy crab class is cultured in the world.Its size is than North America blue crab and off-lying sea swimming crab manufacturer's quality preferably soft crab.This method is according to the adaptability of Portunus trituberculatus Miers to environment, and the shell characteristic, creates best shell environment, reduces lethality, improves the shell rate, produces the soft shell Portunus trituberculatus Miers.If can carry out the production of Portunus trituberculatus Miers soft crab on a large scale, can produce nearly hundred million yuan the output value every year.
Summary of the invention
The purpose of this invention is to provide a kind of method, select for use the China and the world to culture Portunus trituberculatus Miers largest, the most suitable high-quality soft crab specification requirement of individual size and cultivate soft crab with Portunus trituberculatus Miers production soft crab.
Technical scheme of the present invention: from natural marine site or Portunus trituberculatus Miers culture the pond, obtain the 50-250 gram, do not finish the Portunus trituberculatus Miers of reproduction shell, as shell kind crab.It is pool cultivated that shell kind crab live body is transported to shell, is strictly on guard against temperature, salinity cataclysm.PH is 7.0-8.8, and dissolved oxygen is more than the 5mg/L.Salinity 20-35, temperature is 18-30 ℃.Every day, the bait throwing in time was dusk or early morning by the 5-10% bait throwing in of crab body weight.Checked shell or the death condition of a crab in every 2-4 hour.The crab of checkmating is taken out, and disposes; Soft crab is shifted out, and live body is anxious to freeze preservation, or the low temperature live body is preserved for selling.
Advantage of the present invention: Portunus trituberculatus Miers is that largest ocean crab class is cultured in the world, and soft crab cultivation crab kind is the abundantest.The Portunus trituberculatus Miers individuality is bigger than North America blue crab, off-lying sea swimming crab, is suitable for cultivating high-quality soft crab most.
Embodiment
Below, in conjunction with specific embodiments, the method that the present invention is produced soft crab with Portunus trituberculatus Miers is described further.
Embodiment 1
(1) the indoor cement pit of building, long 3.8 meters long of pond, pond outer wall high 80 centimetres (25 centimetres of pedestals, dark 55 centimetres of pond), wide 1 meter, 30 centimetres of the depth of waters.Be furnished with the filler pipe mouth on the cement pit, be furnished with the draining mouth of pipe at the bottom of the pond.
(2) the plastics cylinder mould is formed by heavy water-based plastic casting, is made of base and cover two parts.Long 21.5 centimetres of plastics cylinder mould pedestal, wide 15.5 centimetres, high 35 centimetres.Add a cover on the cylinder mould, anti-crab escapes.Lid ties up on the pedestal with rope.1 centimetre of width of mesh diameter.It is bigger to cover mesh, 2 centimetres of diameters, the shell and the survival condition of being convenient to observe crab.
(3) the plastics cylinder mould divides four rows, and neatly in being placed in cement pit, 80 of cylinder moulds are put in every pond.Inflation at the bottom of the pond guarantees dissolved oxygen concentration.
(4) pH is 7.5-8.8, and dissolved oxygen is more than the 5mg/L.Salinity 30, temperature are between 18-25 ℃.Changed water once (change water after removing residual bait the next morning of bait throwing in) in per 2 days, to keep the stable of water environment.
(5) culture the pond or fish for acquisition from the field and also do not finish the Portunus trituberculatus Miers of reproduction shell (50-250 gram) and do the crab kind from Portunus trituberculatus Miers.The work of crab kind band water is transported to soft crab cultivates the field, put into cylinder mould.Bait throwing in early morning, daily ration, feeding quantity are 10% of crab body weight.Bait throwing in per 2 days once.
(6) manway is in the both sides in pond, and the people checks each two row's cylinder mould of both sides respectively in the both sides of cultivating the pond.Every 2 hours, whether once to check crab shell or death.Crab is when crab is dead, and the crab of checkmating in time cleans out, and handles.When finding the crab shell, soft crab is taken out, lift face, the transparent plastic box of packing into, the plastic film freshness protection package of now packing into ,-20 ℃ of urgency are frozen preservation.
Embodiment 2
(1) the indoor aquarium of building, long 3.8 meters long of pond, pond outer wall high 80 centimetres (25 centimetres of pedestals, dark 55 centimetres of pond), wide 1 meter, 30 centimetres of the depth of waters.Be furnished with the filler pipe mouth on the cement pit, be furnished with the draining mouth of pipe down.
(2) the plastics cylinder mould is formed by heavy water-based plastic casting, is made of base and cover two parts.Long 21.5 centimetres of plastics cylinder mould pedestal, wide 15.5 centimetres, high 35 centimetres.Add a cover on the cylinder mould, anti-crab escapes.Lid ties up on the pedestal with rope.1 centimetre of width of mesh diameter.It is bigger to cover mesh, 2 centimetres of diameters, the shell and the survival condition of being convenient to observe crab.
(3) the plastics cylinder mould divides four rows, and neatly in being placed in aquarium, 80 of cylinder moulds are put in every pond.Inflation at the bottom of the pond guarantees dissolved oxygen concentration.
(4) pH is 7.6-8.5, and dissolved oxygen is more than the 5mg/L.Salinity 25, temperature are between 20-28 ℃.Changed water once (change water after removing residual bait the next morning of bait throwing in) in per 2 days, to keep the stable of water environment.
(5) culture the pond or fish for acquisition from the field and also do not finish the Portunus trituberculatus Miers of reproduction shell (50-250 gram) and do the crab kind from Portunus trituberculatus Miers.The crab kind is transported to soft crab cultivates the field, put into cylinder mould.Bait throwing at dusk, daily ration, feeding quantity is 8% of a crab body weight.Bait throwing in per 2 days once.
(6) manway is in the both sides in pond, and the people checks each two row's cylinder mould of both sides respectively in the both sides of cultivating the pond.Every 2 hours, whether once to check crab shell or death.Crab is when crab is dead, and the crab of checkmating in time cleans out, and handles.When finding the crab shell, soft crab is taken out, lift face, the transparent plastic box of packing into, the plastic film freshness protection package of now packing into ,-20 ℃ of urgency are frozen preservation.
Embodiment 3
(1) indoor Glass fibre reinforced plastic tub, long 1.9 meters, bucket is high 50 centimetres, wide 1 meter, 30 centimetres of the depth of waters.Bucket underlay stainless steel pedestal, the stainless steel pedestal is high 25 centimetres.2 buckets join end to end, and form a line, and both sides are manway.
(2) the plastics cylinder mould is formed by heavy water-based plastic casting, is made of base and cover two parts.Long 21.5 centimetres of plastics cylinder mould pedestal, wide 15.5 centimetres, high 35 centimetres.Add a cover on the cylinder mould, anti-crab escapes.Lid ties up on the pedestal with rope.1 centimetre of width of mesh diameter.It is bigger to cover mesh, 2 centimetres of diameters, the shell and the survival condition of being convenient to observe crab.
(3) the plastics cylinder mould divides four rows, neatly in being placed in Glass fibre reinforced plastic tub, puts 40 of cylinder moulds for every barrel.The inflation of bucket end usefulness gas stone guarantees dissolved oxygen concentration.
(4) pH is 7.4-8.5, and dissolved oxygen is more than the 5mg/L.Salinity 28, temperature are between 18-25 ℃.Changed water once (change water after removing residual bait the next morning of bait throwing in) in per 2 days, to keep the stable of water environment.
(5) culture the pond or fish for acquisition from the field and also do not finish the Portunus trituberculatus Miers of reproduction shell (50-250 gram) and do the crab kind from Portunus trituberculatus Miers.The crab kind is transported to soft crab cultivates the field, put into cylinder mould.Bait throwing at dusk, daily ration, feeding quantity is 5% of a crab body weight.Bait throwing in per 2 days once.
(6) manway is in the both sides of bucket, and the people checks each two row's cylinder mould of both sides respectively in the both sides of cultivating the pond.Every 2 hours, whether once to check crab shell or death.Crab is when crab is dead, and the crab of checkmating in time cleans out, and handles.When finding the crab shell, soft crab is taken out, lift face, the transparent plastic box of packing into, the plastic film freshness protection package of now packing into ,-20 ℃ of urgency are frozen preservation.
Embodiment 4
(1) soft crab cultivation pond is indoor Plastic Drum, and long 68.5 centimetres, bucket is high 41 centimetres, wide 48 centimetres, 30 centimetres of the depth of waters.Bucket underlay stainless steel pedestal, the stainless steel pedestal is high 25 centimetres.10 buckets are lined up two row side by side, and both sides are manway.
(2) the plastics cylinder mould is formed by heavy water-based plastic casting, is made of base and cover two parts.Long 21.5 centimetres of plastics cylinder mould pedestal, wide 15.5 centimetres, high 35 centimetres.Add a cover on the cylinder mould, anti-crab escapes.Lid ties up on the pedestal with rope.1 centimetre of width of mesh diameter.It is bigger to cover mesh, 2 centimetres of diameters, the shell and the survival condition of being convenient to observe crab.
(3) the plastics cylinder mould divides two rows, neatly in being placed in cement pit, puts 8 of cylinder moulds for every barrel.The inflation of bucket end usefulness gas stone guarantees dissolved oxygen concentration.
(4) pH is 7.5-8.8, and dissolved oxygen is more than the 5mg/L.Salinity 30, temperature are between 18-29 ℃.Changed water once (change water after removing residual bait the next morning of bait throwing in) in per 2 days, to keep the stable of water environment.
(5) culture the pond or fish for acquisition from the field and also do not finish the Portunus trituberculatus Miers of reproduction shell (50-250 gram) and do the crab kind from Portunus trituberculatus Miers.The crab kind is transported to soft crab cultivates the field, put into cylinder mould.Bait throwing at dusk, daily ration, feeding quantity is 10% of a crab body weight.Bait throwing in per 2 days once.
(6) manway is in the both sides of bucket, and the people checks each two row's cylinder mould of both sides respectively in the both sides of cultivating the pond.Every 2 hours, whether once to check crab shell or death.Crab is when crab is dead, and the crab of checkmating in time cleans out, and handles.When finding the crab shell, soft crab is taken out, lift face, the transparent plastic box of packing into, the plastic film freshness protection package of now packing into ,-20 ℃ of urgency are frozen preservation.
Embodiment 5
(1) soft crab cultivation pond is indoor Plastic Drum, and long 68.5 centimetres, bucket is high 41 centimetres, wide 48 centimetres, 30 centimetres of the depth of waters.Bucket underlay stainless steel pedestal, the stainless steel pedestal is high 25 centimetres.10 buckets are lined up two row side by side, and both sides are manway.
(2) the plastics cylinder mould is connected into the long column body with rope and forms, be made of base and cover two parts by 5 (adding a cover totally 6) swimming property plastic deepings.Long 21.5 centimetres of plastics cylinder mould pedestal, wide 15.5 centimetres, high 35 centimetres.Add a cover on the cylinder mould, anti-crab escapes.Lid ties up on the pedestal with rope.1 centimetre of width of mesh diameter.It is bigger to cover mesh, 2 centimetres of diameters, the shell and the survival condition of being convenient to observe crab.Put a ceramics counterweight consistent in the swimming property plastics cylinder mould, in case the cylinder mould come-up with the cylinder mould internal diameter.
(3) the plastics cylinder mould divides two rows, and neatly in being placed in cement pit, 8 of cylinder moulds are put in every pond.The inflation of bucket end usefulness gas stone guarantees dissolved oxygen concentration.
(4) pH is 7.2-8.5, and dissolved oxygen is more than the 5mg/L.Salinity 30, temperature are between 20-28 ℃.Changed water once (change water after removing residual bait the next morning of bait throwing in) in per 2 days, to keep the stable of water environment.
(5) culture the pond or fish for acquisition from the field and also do not finish the Portunus trituberculatus Miers of reproduction shell (50-250 gram) and do the crab kind from Portunus trituberculatus Miers.The crab kind is transported to soft crab cultivates the field, put into cylinder mould.Bait throwing at dusk, daily ration, feeding quantity is 8% of a crab body weight.Bait throwing in per 2 days once.
(6) manway is in the both sides of bucket, and the people checks each two row's cylinder mould of both sides respectively in the both sides of cultivating the pond.Every 2 hours, whether once to check crab shell or death.Crab is when crab is dead, and the crab of checkmating in time cleans out, and handles.When finding the crab shell, soft crab is taken out, lift face, the transparent plastic box of packing into, the plastic film freshness protection package of now packing into ,-20 ℃ of urgency are frozen preservation.
Embodiment 6
(1) buoyant raft is made of polyvinyl chloride (PVC) pipe of 6 centimetres of diameters, and a buoyant raft is generally interconnected by many 4 meters long pvc pipes, and 5 of every rows form 4 row and lay the case hurdle of crab case (width just a glance is seen the visual field in the past).Two ends, pvc pipe road cover the PVC cap, enter to prevent water.This buoyant raft length depends on the length scale in pond.Buoyant raft is divided into each subsection of 110 * 110 centimetres, connects by a narrow wood (2.5 centimetres wide * 2.0 cm thicks * 110 centimeter length) binding, or wooden by replacing than the polyvinyl chloride tubule of being responsible for littler caliber.Wood or tubule are horizontal to tie up on the person in charge.Each can hold 6 crab casees and arrange with the wooden part (joint) that separates, and promptly every row 6 casees, 4 row are totally 24 casees.
(2) Portunus trituberculatus Miers (50-250 gram) individually is contained in the plastic box with holes.Case is divided into base and cover.The pedestal parameter of case is 21.5 * 15.5 * 90 centimetres.After putting into crab, case lid ties up on the pedestal firmly.Cover bigger hole, be convenient to not open the shell that case lid comes feeding and checks crab.Crab is contained in the plastic box, and buoyant raft supports plastic box.
(3) fish for the crab that Portunus trituberculatus Miers also do not finish the reproduction shell from the field and do the crab kind.The crab kind is transported to soft crab cultivates the field, put into the crab case.Every day, the bait throwing in time was at dusk by 10% bait throwing in of crab body weight.Cultivating pond pH is 7.0-8.8, and dissolved oxygen is more than the 5mg/L.Water temperature 18-28 ℃, salinity are 30.
(4) every 2 hours, whether once to check crab shell or death, check survival condition and the shell situation of every case crab successively.When crab was dead, the crab of checkmating in time cleaned out, and handles.When finding the crab shell, soft crab to be taken out, lift face is carried out in fresh water hypothermic anesthesia, the plastic casing of packing into, the food bag of packing into then, timely freezing processing.
Claims (1)
1. method of producing soft crab with Portunus trituberculatus Miers, it is characterized in that from natural marine site or Portunus trituberculatus Miers breed pond, obtain the Portunus trituberculatus Miers that 50-250 restrains, do not finish the reproduction shell, as shell kind crab, it is pool cultivated that shell kind crab live body is transported to shell, be strictly on guard against temperature, salinity cataclysm, it is 7.0-8.8 that soft crab is cultivated pond pH, and dissolved oxygen is more than the 5mg/L; Salinity 20-35, temperature is 18-30 ℃, and every day, the bait throwing in time was dusk or early morning by the 5-10% bait throwing in of crab body weight, checked shell or the death condition of a crab in every 2-4 hour, and the crab of checkmating is taken out, and disposes; Soft crab is shifted out, and live body is anxious to freeze preservation, or the low temperature live body is preserved for selling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910214435A CN101755697A (en) | 2009-12-25 | 2009-12-25 | Method for producing soft-shell crabs by using portunus trituberculatus crabs |
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| Application Number | Priority Date | Filing Date | Title |
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| CN200910214435A CN101755697A (en) | 2009-12-25 | 2009-12-25 | Method for producing soft-shell crabs by using portunus trituberculatus crabs |
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| CN101755697A true CN101755697A (en) | 2010-06-30 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101971781A (en) * | 2010-10-18 | 2011-02-16 | 宁波大学 | Method for culturing soft blue crabs indoors |
| CN103843700A (en) * | 2013-12-23 | 2014-06-11 | 浙江省海洋开发研究院 | Method for raising soft-shell portunus trituberculatus indoors |
| CN103891660A (en) * | 2014-04-08 | 2014-07-02 | 王连成 | Indoor circulating water three-dimensional swimming crab temporary fostering and fattening and soft crab breeding method |
| CN113029853A (en) * | 2021-03-01 | 2021-06-25 | 宁波大学 | Method suitable for evaluating quality of soft-shell crabs of scylla paramamosain |
-
2009
- 2009-12-25 CN CN200910214435A patent/CN101755697A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101971781A (en) * | 2010-10-18 | 2011-02-16 | 宁波大学 | Method for culturing soft blue crabs indoors |
| CN101971781B (en) * | 2010-10-18 | 2012-11-28 | 宁波大学 | Method for culturing soft blue crabs indoors |
| CN103843700A (en) * | 2013-12-23 | 2014-06-11 | 浙江省海洋开发研究院 | Method for raising soft-shell portunus trituberculatus indoors |
| CN103891660A (en) * | 2014-04-08 | 2014-07-02 | 王连成 | Indoor circulating water three-dimensional swimming crab temporary fostering and fattening and soft crab breeding method |
| CN103891660B (en) * | 2014-04-08 | 2016-01-20 | 王连成 | A kind of three-dimensional method of bringing up fertile swimming crab temporarily and cultivating soft crab of indoor circulating water |
| CN113029853A (en) * | 2021-03-01 | 2021-06-25 | 宁波大学 | Method suitable for evaluating quality of soft-shell crabs of scylla paramamosain |
| CN113029853B (en) * | 2021-03-01 | 2022-05-20 | 宁波大学 | Method suitable for evaluating quality of soft-shell crabs of scylla paramamosain |
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Application publication date: 20100630 |