CN107027675A - A kind of high-quality method for culturing seedlings of crab - Google Patents
A kind of high-quality method for culturing seedlings of crab Download PDFInfo
- Publication number
- CN107027675A CN107027675A CN201710387960.1A CN201710387960A CN107027675A CN 107027675 A CN107027675 A CN 107027675A CN 201710387960 A CN201710387960 A CN 201710387960A CN 107027675 A CN107027675 A CN 107027675A
- Authority
- CN
- China
- Prior art keywords
- crab
- water
- nursery
- parent
- pond
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
Landscapes
- Fodder In General (AREA)
Abstract
The present invention relates to technical field of aquaculture, a kind of high-quality method for culturing seedlings of crab is disclosed, is comprised the following steps：（1）The selection male and female crab that body weight is suitable, vitality is vigorous is as parent crab, and female crab and male crab will prevent the problems such as seedling development that inbreeding is brought is bad from different waters, and external germ is removed by sterilization before dispensing；（2）By water temperature control in nursery pond at 15 20 DEG C before spawning, water PH value is controlled between 7.8 8.2, high protein feed is fed into pond, according to the setting of this condition, the pregnancy rate of female crab can be improved, and egg laying amount is largely increased, ovum nutriment is also high, is conducive to further development by metamorphosis；（3）After spawning, water temperature is improved, accretion rate is improved, paedomorphosis speed is accelerated, after the megalops larva stage is entered, progressively cooled, prevented under the higher environment of temperature, cause water body rotten because water body bait and excreta increase.
Description
Technical field
The invention belongs to technical field of aquaculture, and in particular to a kind of high-quality method for culturing seedlings of crab.
Background technology
Crab：The animal kingdom, Arthropoda, subphylum crustacea, hapalonychia guiding principle, true Malacostraca, Decapoda, abdomen embryo is sub-
Mesh under mesh, short-tail.It is shellfish, body is protect by duricrust, by gill respiration.In taxonomy, it is with shrimp, dragon
Shrimp, hermit crab are species.The crab of most species live in the sea or neritic zone, also there are some to dwell in fresh water or land
Ground.Crab judges direction by earth's magnetic field.The with a long history of crab eats in China,《Ease week book king can solve》《Zhou Litian
Official blister people》In it is on the books.Crab is rich in protein, there is high cholesterol, high purine, should self section when patient with gout is edible
System, the people with flu, hepatitis, angiocardiopathy should not eat crab.There is the tradition of edible river crab before and after mid-autumn in China, due to tradition
The upper traditional Chinese medical science thinks that crab is cold in nature, therefore the condiment that the configuration food crab such as conventional ginger young pilose antler, purple perilla uses.They lean on small crab of female crab next life, often
Secondary female crab can all produce many ovum, quantity up to millions of grains more than.These ovum are after the hatching of female crab belly, and the young can depart from
Parent, as littoral trend is swum everywhere.After ejection several times, grow up to megalopas, megalopas is long through ejection several times again
Into young crab, young crab external form is almost identical with into crab, then reforms into after ejection several times crab.Most sea crabs class is all ovum
After maturation, directly discharge Yu Haiyang is not hatched.
In existing crab cultivation, nursery work is very crucial, and many raisers are in order to time saving and energy saving, commercially
Seedling, it is very different but to there is quality, and mutually food phenomenon is serious in growth, while seedling bad adaptability, causes survival rate low, because
This, self-centered method for culturing seedlings just adapts to self-produced aquaculture model.
The content of the invention
The purpose of the present invention is that, there is provided a kind of high-quality method for culturing seedlings of crab, can significantly carry the problem of being directed to existing
The quality of high nursery, economic benefit is played for a long time.
The present invention is achieved by the following technical solutions：
A kind of high-quality method for culturing seedlings of crab, comprises the following steps：
（1）The selection male crab that body weight is 90-110 grams of female crab, body weight is 120-150 grams is as nursery parent crab, and male and female parent crab exists
Separately soaked 5-8 minutes before breeding, the dichloro acid sodium and mass concentration for being 20-30ppm containing mass concentration in soak are
0.01-0.02% sodium bicarbonate, after immersion according to sex ration be 15-20：1 ratio input nursery pond, every 100 square metres of spawnings
Parent crab number of elements is delivered in the range of 80-100 in pond；
（2）By water temperature control in nursery pond at 15-20 DEG C before spawning, water PH value control is fed between 7.8-8.2 into pond
High protein feed, protein content is 35-45%, and fat content is 30-35%, and crude fiber content is 7-9%, each feeding volume with
Parent crab, which suffers all, to be defined, and feeds 5-7 times daily, and interval time is uniform, and the 9-10 points in the morning carry out changing water daily, and quantity of exchanged water reaches
Chi Shen 20-30%, the water temperature for changing water differs with pool inner water temperature and must not exceed 3 DEG C；
（3）After spawning, parent crab is pulled out, temperature in nursery pond is improved according to 1.0-1.4 DEG C/day of speed, until reaching 33-35
DEG C, bait is fed according to 10-12 g/l of ratio every time, is fed 2-3 times daily, into after the megalops larva stage, according to 0.8-
The speed of 1.0 DEG C/day gradually reduces nursery water temperature, until it is stable at 18-20 DEG C, bait consumption is increased, every time according to 15-18
G/l ratio feed bait, feed 3-4 times daily, bait used contains according to mass fraction meter：Wheel animalcule account for 30-35%,
Artemia accounts for 20-30%, water flea and accounts for 20-25%, remaining as campanularian content；
It is used as further improvement of these options, step（1）Selected in parent crab without disability, the blue or green tripe of the back of the body is white, and eyes are mellow and full
Flexibly, four limbs are strong, wherein female parent crab and male parent crab are from different Cultivated waters.
It is used as further improvement of these options, step（2）In start aerator while change water, make oxygen content of water
Reach 5-8 mg/litres.
It is used as further improvement of these options, step（3）In feed before scoop out one glass using 50 milliliters of small beakers and educate
Water in Miao Chi, can be fed containing the 6-8 young in one glass.
As further improvement of these options, the seedling-cultivating tool used in nursery is 80- in mass concentration
Soaked in 100ppm ClO 2 solution 3-5 hours.
The present invention has advantages below compared with prior art：It is good in order to solve to there is seedling quality in existing crab cultivation
Green bristlegrass is uneven, and mutually food phenomenon is serious in growth, while seedling bad adaptability, causes the problem of survival rate is low, the invention provides one
The high-quality method for culturing seedlings of crab is planted, is comprised the following steps：（1）The selection male and female crab that body weight is suitable, vitality is vigorous is used as parent
Crab, and female crab and male crab will prevent the problems such as seedling development that inbreeding is brought is bad, before dispensing from different waters
External germ is removed by sterilization, prevent water body in pollution nursery pond；（2）By water temperature control in nursery pond in 15- before spawning
20 DEG C, water PH value is controlled between 7.8-8.2, high protein feed is fed into pond, according to the setting of this condition, it is possible to increase
The pregnancy rate of female crab, and egg laying amount is largely increased, and ovum nutriment is also high, is conducive to further development by metamorphosis；
（3）After spawning, water temperature is improved, at a higher temperature, accretion rate is improved, paedomorphosis speed is accelerated, can
The death rate is reduced, after the megalops larva stage is entered, is progressively cooled, prevented under the higher environment of temperature, due to water body
Bait and excreta, which increase, causes water body to go bad.
Embodiment
With reference to specific embodiment, the present invention will be further described.
Embodiment 1
A kind of high-quality method for culturing seedlings of crab, comprises the following steps：
（1）The selection male crab that body weight is 90 grams of female crab, body weight is 120 grams is as nursery parent crab, and male and female parent crab is divided before breeding
Open immersion 5 minutes, the sodium bicarbonate that the dichloro acid sodium and mass concentration for being 20ppm containing mass concentration in soak are 0.01%, leaching
After bubble according to sex ration be 15：1 ratio input nursery pond, every 100 square metres of spawning ponds deliver parent crab number of elements in 80-100 models
In enclosing；
（2）By water temperature control in nursery pond at 15 DEG C before spawning, water PH value control feeds height into pond between 7.8-8.2
Protein feed, protein content is 35%, and fat content is 30%, and crude fiber content is 7%, each feeding volume with parent crab suffer all for
Standard, feeds 5 times daily, and interval time is uniform, and the 9-10 points in the morning carry out changing water daily, and quantity of exchanged water reaches deep 20% in pond, institute
The water temperature for changing water differs with pool inner water temperature and must not exceed 3 DEG C；
（3）After spawning, parent crab is pulled out, temperature in nursery pond is improved according to the speed of 1.0 DEG C/day, until reaching 33 DEG C, every time
Feed bait according to 10 g/l of ratio, feed daily 2 times, into after the megalops larva stage, according to 0.8 DEG C/day speed by
Step reduction nursery water temperature, until it is stable at 18 DEG C, bait consumption is increased, bait is fed according to 15 g/l of ratio every time, daily
Feed 3 times, bait used contains according to mass fraction meter：Wheel animalcule, which accounts for 30%, artemia and accounts for 20%, water flea, accounts for 20%, remaining as campanularian
Content；
It is used as further improvement of these options, step（1）Selected in parent crab without disability, the blue or green tripe of the back of the body is white, and eyes are mellow and full
Flexibly, four limbs are strong, wherein female parent crab and male parent crab are from different Cultivated waters.
It is used as further improvement of these options, step（2）In start aerator while change water, make oxygen content of water
Reach 5 mg/litres.
It is used as further improvement of these options, step（3）In feed before scoop out one glass using 50 milliliters of small beakers and educate
Water in Miao Chi, can be fed containing the 6-8 young in one glass.
As further improvement of these options, the seedling-cultivating tool used in nursery is 80ppm's in mass concentration
Soaked in ClO 2 solution 3 hours.
Embodiment 2
A kind of high-quality method for culturing seedlings of crab, comprises the following steps：
（1）The selection male crab that body weight is 100 grams of female crab, body weight is 135 grams is as nursery parent crab, and male and female parent crab is divided before breeding
Open and soak 6 minutes, the sodium bicarbonate that the dichloro acid sodium and mass concentration for being 25ppm containing mass concentration in soak are 0.015%,
After immersion according to sex ration be 17：1 ratio input nursery pond, every 100 square metres of spawning ponds deliver parent crab number of elements in 80-100
In the range of；
（2）By water temperature control in nursery pond at 17 DEG C before spawning, water PH value control feeds height into pond between 7.8-8.2
Protein feed, protein content is 40%, and fat content is 33%, and crude fiber content is 8%, each feeding volume with parent crab suffer all for
Standard, feeds 6 times daily, and interval time is uniform, and the 9-10 points in the morning carry out changing water daily, and quantity of exchanged water reaches deep 25% in pond, institute
The water temperature for changing water differs with pool inner water temperature and must not exceed 3 DEG C；
（3）After spawning, parent crab is pulled out, temperature in nursery pond is improved according to the speed of 1.2 DEG C/day, until reaching 34 DEG C, every time
Feed bait according to 11 g/l of ratio, feed daily 2 times, into after the megalops larva stage, according to 0.9 DEG C/day speed by
Step reduction nursery water temperature, until it is stable at 19 DEG C, bait consumption is increased, bait is fed according to 16 g/l of ratio every time, daily
Feed 3 times, bait used contains according to mass fraction meter：Wheel animalcule, which accounts for 32%, artemia and accounts for 25%, water flea, accounts for 22%, remaining as campanularian
Content；
It is used as further improvement of these options, step（1）Selected in parent crab without disability, the blue or green tripe of the back of the body is white, and eyes are mellow and full
Flexibly, four limbs are strong, wherein female parent crab and male parent crab are from different Cultivated waters.
It is used as further improvement of these options, step（2）In start aerator while change water, make oxygen content of water
Reach 6 mg/litres.
It is used as further improvement of these options, step（3）In feed before scoop out one glass using 50 milliliters of small beakers and educate
Water in Miao Chi, can be fed containing the 6-8 young in one glass.
As further improvement of these options, the seedling-cultivating tool used in nursery is 90ppm's in mass concentration
Soaked in ClO 2 solution 4 hours.
Embodiment 3
A kind of high-quality method for culturing seedlings of crab, comprises the following steps：
（1）The selection male crab that body weight is 110 grams of female crab, body weight is 150 grams is as nursery parent crab, and male and female parent crab is divided before breeding
Open immersion 8 minutes, the sodium bicarbonate that the dichloro acid sodium and mass concentration for being 30ppm containing mass concentration in soak are 0.02%, leaching
After bubble according to sex ration be 20：1 ratio input nursery pond, every 100 square metres of spawning ponds deliver parent crab number of elements in 80-100 models
In enclosing；
（2）By water temperature control in nursery pond at 20 DEG C before spawning, water PH value control feeds height into pond between 7.8-8.2
Protein feed, protein content is 45%, and fat content is 35%, and crude fiber content is 9%, each feeding volume with parent crab suffer all for
Standard, feeds 7 times daily, and interval time is uniform, and the 9-10 points in the morning carry out changing water daily, and quantity of exchanged water reaches deep 30% in pond, institute
The water temperature for changing water differs with pool inner water temperature and must not exceed 3 DEG C；
（3）After spawning, parent crab is pulled out, temperature in nursery pond is improved according to the speed of 1.4 DEG C/day, until reaching 35 DEG C, every time
Feed bait according to 12 g/l of ratio, feed daily 3 times, into after the megalops larva stage, according to 1.0 DEG C/day speed by
Step reduction nursery water temperature, until it is stable at 20 DEG C, bait consumption is increased, bait is fed according to 18 g/l of ratio every time, daily
Feed 4 times, bait used contains according to mass fraction meter：Wheel animalcule, which accounts for 35%, artemia and accounts for 30%, water flea, accounts for 25%, remaining as campanularian
Content；
It is used as further improvement of these options, step（1）Selected in parent crab without disability, the blue or green tripe of the back of the body is white, and eyes are mellow and full
Flexibly, four limbs are strong, wherein female parent crab and male parent crab are from different Cultivated waters.
It is used as further improvement of these options, step（2）In start aerator while change water, make oxygen content of water
Reach 8 mg/litres.
It is used as further improvement of these options, step（3）In feed before scoop out one glass using 50 milliliters of small beakers and educate
Water in Miao Chi, can be fed containing the 6-8 young in one glass.
As further improvement of these options, the seedling-cultivating tool used in nursery is 100ppm's in mass concentration
Soaked in ClO 2 solution 5 hours.
Contrast test
Crab nursery is carried out using embodiment 1-3 method respectively, with existing crab method for culturing seedlings as a control group, while with
The crab seedling that in the market is bought is cultivated as blank control using identical method, and every group of cultured area is 5 mu, will
Cultivation result records as shown in the table：
| Project | Plant shoot survival percent（%） | Seedling raise period（My god） | Grow up female crab average weight（Gram） | Grow up female crab average weight（Gram） |
| Embodiment 1 | 41 | 28 | 105 | 143 |
| Embodiment 2 | 42 | 27 | 106 | 145 |
| Embodiment 3 | 40 | 30 | 104 | 142 |
| Control group | 35 | 34 | 98 | 128 |
| Blank control group | 31 | / | 95 | 124 |
It is can be found that by comparing：Crab nursery is carried out using the method for the present invention, shoot survival percent is planted and greatly improves, seedling raise period
It is reduced, the adult crab physique that cultivation is obtained is larger, being capable of occuping market.
Claims (5)
1. the high-quality method for culturing seedlings of a kind of crab, it is characterised in that comprise the following steps：
（1）The selection male crab that body weight is 90-110 grams of female crab, body weight is 120-150 grams is as nursery parent crab, and male and female parent crab exists
Separately soaked 5-8 minutes before breeding, the dichloro acid sodium and mass concentration for being 20-30ppm containing mass concentration in soak are
0.01-0.02% sodium bicarbonate, after immersion according to sex ration be 15-20：1 ratio input nursery pond, every 100 square metres of spawnings
Parent crab number of elements is delivered in the range of 80-100 in pond；
（2）By water temperature control in nursery pond at 15-20 DEG C before spawning, water PH value control is fed between 7.8-8.2 into pond
High protein feed, protein content is 35-45%, and fat content is 30-35%, and crude fiber content is 7-9%, each feeding volume with
Parent crab, which suffers all, to be defined, and feeds 5-7 times daily, and interval time is uniform, and the 9-10 points in the morning carry out changing water daily, and quantity of exchanged water reaches
Chi Shen 20-30%, the water temperature for changing water differs with pool inner water temperature and must not exceed 3 DEG C；
（3）After spawning, parent crab is pulled out, temperature in nursery pond is improved according to 1.0-1.4 DEG C/day of speed, until reaching 33-35
DEG C, bait is fed according to 10-12 g/l of ratio every time, is fed 2-3 times daily, into after the megalops larva stage, according to 0.8-
The speed of 1.0 DEG C/day gradually reduces nursery water temperature, until it is stable at 18-20 DEG C, bait consumption is increased, every time according to 15-18
G/l ratio feed bait, feed 3-4 times daily, bait used contains according to mass fraction meter：Wheel animalcule account for 30-35%,
Artemia accounts for 20-30%, water flea and accounts for 20-25%, remaining as campanularian content.
2. a kind of high-quality method for culturing seedlings of crab as claimed in claim 1, it is characterised in that step（1）Selected in parent crab
Without disability, the blue or green tripe of the back of the body is white, and eyes are mellow and full flexibly, and four limbs are strong, wherein female parent crab and male parent crab are from different Cultivated waters.
3. a kind of high-quality method for culturing seedlings of crab as claimed in claim 1, it is characterised in that step（2）In open while change water
Dynamic aerator, makes oxygen content of water reach 5-8 mg/litres.
4. a kind of high-quality method for culturing seedlings of crab as claimed in claim 1, it is characterised in that step（3）In feed before use 50
Milliliter small beaker is scooped out can be fed in the water in one glass of nursery pond, one glass containing the 6-8 young.
5. the high-quality method for culturing seedlings of a kind of crab as claimed in claim 1, it is characterised in that the seedling-cultivating tool used in nursery is equal
Soaked 3-5 hours in mass concentration is 80-100ppm ClO 2 solution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710387960.1A CN107027675A (en) | 2017-05-27 | 2017-05-27 | A kind of high-quality method for culturing seedlings of crab |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710387960.1A CN107027675A (en) | 2017-05-27 | 2017-05-27 | A kind of high-quality method for culturing seedlings of crab |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107027675A true CN107027675A (en) | 2017-08-11 |
Family
ID=59539018
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710387960.1A Pending CN107027675A (en) | 2017-05-27 | 2017-05-27 | A kind of high-quality method for culturing seedlings of crab |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107027675A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101790965A (en) * | 2010-02-04 | 2010-08-04 | 浙江省海洋水产研究所 | Artificial culture method for Portunus trituberculatus |
| CN105309338A (en) * | 2014-07-22 | 2016-02-10 | 周广安 | Chinese mitten crab breeding method |
| CN106172138A (en) * | 2016-08-02 | 2016-12-07 | 盘锦光合蟹业有限公司 | A kind of crab selection |
-
2017
- 2017-05-27 CN CN201710387960.1A patent/CN107027675A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101790965A (en) * | 2010-02-04 | 2010-08-04 | 浙江省海洋水产研究所 | Artificial culture method for Portunus trituberculatus |
| CN105309338A (en) * | 2014-07-22 | 2016-02-10 | 周广安 | Chinese mitten crab breeding method |
| CN106172138A (en) * | 2016-08-02 | 2016-12-07 | 盘锦光合蟹业有限公司 | A kind of crab selection |
Non-Patent Citations (2)
| Title |
|---|
| 吴常文等编著: "《梭子蟹渔业技术》", 31 March 1996 * |
| 王文斌: "河蟹育苗高产高效技术", 《渔业致富指南》 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102763615B (en) | Full-manual breeding method for megalonibea fusca | |
| CN102783439B (en) | Takifugu obscurus three-stage type culture process | |
| CN101755699B (en) | Method for incubating brachymystax lenok seeds | |
| CN105075955B (en) | Neat mouth schizothoracin nursery breeding method | |
| CN104082213A (en) | Artificial propagation method for Taiwan mud fishes | |
| CN102726328A (en) | Method for breeding odontobutis obscura | |
| CN103621432A (en) | Method for culturing red carps | |
| CN104521807A (en) | Silver carp culturing method | |
| CN1871899A (en) | Safe high performance synthetical technique for aquiculture of mandarin fish in extratropic region | |
| CN104126533A (en) | High survival rate loach breeding method | |
| CN104542407A (en) | Two-stage cultivation method for loach offspring seeds | |
| CN105766732A (en) | Artificial reproduction method of mandarin fish | |
| CN104106492A (en) | Cultivation method for cultivating Chinese softshell turtles and yellow-head catfish meats | |
| CN106417122A (en) | Cultivating method for increasing high-quality freshwater shrimp seed output | |
| CN110074023B (en) | Navodon septentrionalis fry breeding method | |
| CN104542478A (en) | Imitative ecological breeding and reproduction technology of andrias davidianus | |
| CN106577372A (en) | Syngnathus overwintering and artificial reproduction method | |
| CN105941230A (en) | Grass carp reproduction and breeding technology | |
| CN106259060B (en) | A kind of Cobitidae fish fry breeding method | |
| CN107027674A (en) | A kind of increasing of quality and production cultural method of crab | |
| CN107683804A (en) | A kind of technical method of pond culture freshwater lobster | |
| CN112568158B (en) | Green pollution-free culture method for stichopus japonicus, penaeus japonicus, portunus trituberculatus and ulva | |
| CN108901963A (en) | A kind of Penaeus Vannmei high density closed culture method | |
| CN107027675A (en) | A kind of high-quality method for culturing seedlings of crab | |
| CN103651211A (en) | Turbot aquaculture method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170811 |
|
| RJ01 | Rejection of invention patent application after publication |