CN109105311A - A kind of crab class seedling culture method - Google Patents
A kind of crab class seedling culture method Download PDFInfo
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- CN109105311A CN109105311A CN201811074839.4A CN201811074839A CN109105311A CN 109105311 A CN109105311 A CN 109105311A CN 201811074839 A CN201811074839 A CN 201811074839A CN 109105311 A CN109105311 A CN 109105311A
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- crab
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- oogenesis
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; CARE OF BIRDS, FISHES, INSECTS; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K61/00—Culture of aquatic animals
- A01K61/50—Culture of aquatic animals of shellfish
- A01K61/59—Culture of aquatic animals of shellfish of crustaceans, e.g. lobsters or shrimps
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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 discloses a kind of crab class seedling culture methods, belong to aquaculture field, comprising: breeding juvenile crab: selecting the female crab of non-oogenesis in March, select the ovigerous crab in May；Disinfection: subregion: the culture pond after disinfection is divided into continuous first area, second area and third region, is equipped with sand above the mud of first area culture pond；Water filling: the breeding water that initial temperature is 10 DEG C is injected in culture pond；It is put into juvenile crab: the non-female crab of oogenesis being put into first area, ovigerous crab is put into third region；Zonal control temperature is to cultivate juvenile crab；Second area is developed into the perfect female crab of oogenesis and is transferred to third region；Obtain crab ovum.Breeding method of the invention is able to ascend the yield of the cultivation of crab, reduces the disease incidence of crab class.
Description
Technical field
The present invention relates to aquaculture field, in particular to a kind of crab class seedling culture method.
Background technique
River crab scientific name be Sinensis soft-shelled turtle crab, the expensive freshwater product of generic name, also known as eriocheir sinensis, crab, delicious meat, unique flavor,
The economic value highest in more than 500 kinds of China fresh water crab, is China's specialty, grows in fresh water, the crab class bred in seawater.From upper
Century the eighties rise, and the production form of river crab, which begins with naturally to catch to artificial breeding, to be changed, and forms biggish production
Scale becomes the pillar industry in China's freshwater aquiculture.
The life of river crab be it is of short duration, the history of life after zoea, megalops larva, young crab and at several stages such as crab,
It needs the young 5 times huskings to become megalops larva in life, then becomes through husking in 13~15 days into crab, its only one reproduction of all one's life
Period, breeding end lives also just terminate.As crab seed breeding density is continuously increased, cultured output is continuously improved, and is being supported
During growing, crab meeting virus infection, the ecological environment water quality adjustment on the crab pool is improper, and industrial wastewater and sanitary sewage directly affect
Water quality, misapplies various antibiotic, disinfection element in culture of Chinese mitten crab, bait to feed quality improper.Therefore, healthy crab class seedling
It is a vital step in crayfish culture.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of crab class seedling culture methods, promote the yield of the cultivation of crab,
Reduce the disease incidence of crab class.
In order to solve the above-mentioned technical problem, the technical solution of the present invention is as follows:
A kind of crab class seedling culture method, comprising:
Breeding juvenile crab: the female crab of non-oogenesis in March is selected, the ovigerous crab in May is selected；
Disinfection: the culture pond of the mud of first thickness is covered with firstly, being exposed to the sun；It second day, is uniformly sprinkled upon using disinfectant
In the culture pond, after 3~5 days, culture pond described in lime disinfection is used；
Subregion: being divided into continuous first area, second area and third region for the culture pond after disinfection,
The mud top of the first area, the culture pond is equipped with sand；The first area, second area and the third
Region gradually transition, the ratio of slope are 1:2.4~2.8；
Water filling: the breeding water that initial temperature is 10 DEG C is injected in the culture pond；
It is put into juvenile crab: the non-female crab of oogenesis being put into first area, the ovigerous crab is put into the third region；
It cultivates juvenile crab: by the water temperature of the first area from 10 DEG C, with 0.5 DEG C of the speed of heating up daily, being warming up to 19-20
DEG C, and by the female crab of oogenesis from the first area is transferred to the third region in the first area, pick out described
The non-female crab of oogenesis of hypoevolutism is transferred to the second area in one region；By the water temperature of the second area it is synchronous from
10 DEG C, with 0.5 DEG C of the speed of heating up daily, it is warming up to 22 DEG C；The water temperature in the third region is synchronous from 10 DEG C, to rise daily
The speed of 0.5 DEG C of temperature, is warming up to 20 DEG C；The second area is developed into the perfect female crab of oogenesis and is transferred to the third area
Domain；
Obtain crab ovum: in the third region, the crab ovum of synchronization gain output.
Preferably, after obtaining crab ovum, need to cultivate crab ovum, to obtain crab class seedling, comprising the following steps:
The zoea of crab class seedling is fed using living body bait and composite bait；
The megalops larva of crab class seedling is fed using living body bait and animal bait；
The young crab of crab class seedling is fed using living body bait, composite bait, animal bait.
Preferably, the living body bait is wheel animalcule and/or fairy shrimp, and the composite bait is algae powder, yeast and prawn slice；
The animal bait is fishbone dust, earthworm powder, silkworm chrysalis, dregs of beans, corn.
Preferably, it is 1~3:2~5:20 algae powder, yeast and prawn slice that the composite bait, which is mass ratio,.
Preferably, it is 15~20:20~30:10~20:10~20:5~10 fish that the animal bait, which is mass ratio,
Bone meal, earthworm powder, silkworm chrysalis, dregs of beans, corn.
Preferably, the first thickness of the mud is 5~10cm.
Preferably, disinfectant is fluoride preparation or Operand.
Compared with prior art, the beneficial effects of the present invention are: in conclusion the invention has the following advantages:
By the accurate control for temperature, parent crab can be allowed to accumulate with good temperature, the accumulation of temperature can allow parent crab more
It is easy oogenesis, and for the parent crab of oogenesis, the gradually accumulation of temperature can allow ovum to possess good developing environment, and ovum is allowed to send out
That educates is more healthy, improves the survival rate of ovum.The zoning design of first area, second area and third region can satisfy not
With temperature required for crab class and nutrition, it can allow all parent crabs that can possess good temperature accumulation, temperature in oogenesis process
The process of degree accumulation can guarantee the quality of parent crab oviposition.
Detailed description of the invention
Some specific embodiments of the present invention is described in detail by way of example and not limitation with reference to the accompanying drawings hereinafter.
Identical appended drawing reference denotes same or similar part or part in attached drawing.It should be appreciated by those skilled in the art that these
What attached drawing was not necessarily drawn to scale.In attached drawing:
Fig. 1 is a kind of general flow figure of crab class seedling culture method of the present invention.
Specific embodiment
Specific embodiments of the present invention will be further explained with reference to the accompanying drawing.It should be noted that for
The explanation of these embodiments is used to help understand the present invention, but and does not constitute a limitation of the invention.In addition, disclosed below
The each embodiment of the present invention involved in technical characteristic can be combined with each other as long as they do not conflict with each other.
As shown in Figure 1, staff trains from the female crab of selection, preparation the invention discloses a kind of crab class seedling culture method
It educates pond to start, the production for female crab provides advantage, to obtain the young crab of health.The specific steps of breeding method are as follows:
S1: breeding juvenile crab: the female crab of non-oogenesis in March is selected, the ovigerous crab in May is selected；
S2: the culture pond of the mud of first thickness disinfection: is covered with firstly, being exposed to the sun；It second day, is uniformly spilt using disinfectant
In culture pond, after 3~5 days, lime disinfection culture pond is used；
S3: subregion: being divided into continuous first area, second area and third region for the culture pond after disinfection,
The mud top of first area, culture pond is equipped with sand；First area, second area and the gradually transition of third region, slope
Degree is than being 1:2.4~2.8；
S4: the breeding water that initial temperature is 10 DEG C water filling: is injected in culture pond；
S5: it is put into juvenile crab: the non-female crab of oogenesis being put into first area, ovigerous crab is put into third region；
S6: it cultivates juvenile crab: by the water temperature of first area from 10 DEG C, with 0.5 DEG C of the speed of heating up daily, being warming up to 19-20
DEG C, and by the female crab of oogenesis from first area is transferred to third region in first area, pick out hypoevolutism in first area
The female crab of non-oogenesis be transferred to second area；The water temperature of second area is synchronous from 10 DEG C, with 0.5 DEG C of the speed of heating up daily,
It is warming up to 22 DEG C；The water temperature in third region is synchronous from 10 DEG C, with 0.5 DEG C of the speed of heating up daily, it is warming up to 20 DEG C；By second
It develops the perfect female crab of oogenesis and is transferred to third region in region；
S7: crab ovum is obtained: in third region, the crab ovum of synchronization gain output.
In step s 2, the first thickness of mud is 5~10cm.Disinfectant is fluoride preparation or Operand.Mud, disinfection
Agent and quick lime are provided to sterilize to culture pond, so that female crab be avoided to be infected.In step s 6, staff passes through
Accurate control for temperature, can allow parent crab to be accumulated with good temperature, and the accumulation of temperature can allow parent crab to be more easier
Oogenesis, and for the parent crab of oogenesis, the gradually accumulation of temperature can allow ovum to possess good developing environment, allow egg development
It is more healthy, improve the survival rate of ovum.Moreover, the zoning design of first area, second area and third region can satisfy
Temperature and nutrition required for different crab classes can allow all parent crabs that can possess good temperature accumulation in oogenesis process,
The process of temperature accumulation can guarantee the quality of parent crab oviposition.
After obtaining crab ovum, need to cultivate crab ovum, to obtain crab class seedling.The life of river crab be it is of short duration, the history of life is gone through
Through zoea, megalops larva, young crab and at several stages such as crab needs the young 5 times huskings to become megalops larva in life, then
Become through husking in 13~15 days into crab, its only one cyclostage in all one's life, breeding end lives also just terminate.
According to the growth cycle of crab class seedling, it is divided into following steps: feeds crab class children using living body bait and composite bait
The zoea of seedling；The megalops larva of crab class seedling is fed using living body bait and animal bait；Use living body bait, synthesis
Bait, animal bait feed the young crab of crab class seedling.Wherein, living body bait is wheel animalcule and/or fairy shrimp, and composite bait is algae
Powder, yeast and prawn slice；Animal bait is fishbone dust, earthworm powder, silkworm chrysalis, dregs of beans, corn.Composite bait is that mass ratio is 1
Algae powder, yeast and the prawn slice of~3:2~5:20.Animal bait be mass ratio be 15~20:20~30:10~20:10~
The fishbone dust of 20:5~10, earthworm powder, silkworm chrysalis, dregs of beans, corn.Bait throwing is carried out respectively according to the growth cycle of crab class seedling
Hello, nutrition needed for capable of guaranteeing the growth of crab class, digestion improves the yield of the cultivation of crab.
In conjunction with attached drawing, the embodiments of the present invention are described in detail above, but the present invention is not limited to described implementations
Mode.For a person skilled in the art, in the case where not departing from the principle of the invention and spirit, to these embodiments
A variety of change, modification, replacement and modification are carried out, are still fallen in protection scope of the present invention.
Claims (7)
1. a kind of crab class seedling culture method characterized by comprising
Breeding juvenile crab: the female crab of non-oogenesis in March is selected, the ovigerous crab in May is selected；
Disinfection: the culture pond of the mud of first thickness is covered with firstly, being exposed to the sun；It second day, is uniformly sprinkled upon using disinfectant described
In culture pond, after 3~5 days, culture pond described in lime disinfection is used；
Subregion: the culture pond after disinfection is divided into continuous first area, second area and third region, described
The mud top of first area, the culture pond is equipped with sand；The first area, second area and the third region
Gradually transition, the ratio of slope are 1:2.4~2.8；
Water filling: the breeding water that initial temperature is 10 DEG C is injected in the culture pond；
It is put into juvenile crab: the non-female crab of oogenesis being put into first area, the ovigerous crab is put into the third region；
It cultivates juvenile crab: by the water temperature of the first area from 10 DEG C, with 0.5 DEG C of the speed of heating up daily, being warming up to 19-20 DEG C,
And by the female crab of oogenesis from the first area is transferred to the third region in the first area, firstth area is picked out
The non-female crab of oogenesis of hypoevolutism is transferred to the second area in domain；The water temperature of the second area is synchronous from 10
DEG C, with 0.5 DEG C of the speed of heating up daily, it is warming up to 22 DEG C；The water temperature in the third region is synchronous from 10 DEG C, to heat up daily
0.5 DEG C of speed is warming up to 20 DEG C；The second area is developed into the perfect female crab of oogenesis and is transferred to the third region；
Obtain crab ovum: in the third region, the crab ovum of synchronization gain output.
2. a kind of crab class seedling culture method according to claim 1, which is characterized in that after obtaining crab ovum, need to train
Crab ovum is educated, to obtain crab class seedling, comprising the following steps:
The zoea of crab class seedling is fed using living body bait and composite bait；
The megalops larva of crab class seedling is fed using living body bait and animal bait；
The young crab of crab class seedling is fed using living body bait, composite bait, animal bait.
3. a kind of crab class seedling culture method according to claim 2, which is characterized in that the living body bait is wheel animalcule
And/or fairy shrimp, the composite bait are algae powder, yeast and prawn slice；The animal bait is fishbone dust, earthworm powder, silkworm
Pupa, dregs of beans, corn.
4. a kind of crab class seedling culture method according to claim 3, which is characterized in that the composite bait is mass ratio
It is 1~3:2~5:20 algae powder, yeast and prawn slice.
5. a kind of crab class seedling culture method according to claim 3, which is characterized in that the animal bait is quality
Than being 15~20:20~30:10~20:10~20:5~10 fishbone dust, earthworm powder, silkworm chrysalis, dregs of beans, corn.
6. a kind of crab class seedling culture method according to claim 1, which is characterized in that the first thickness of the mud is
5~10cm.
7. a kind of crab class seedling culture method according to claim 1, which is characterized in that disinfectant is fluoride preparation or iodine
Preparation.
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| CN201811074839.4A CN109105311A (en) | 2018-09-14 | 2018-09-14 | A kind of crab class seedling culture method |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107711645A (en) * | 2017-11-16 | 2018-02-23 | 合肥康青源养殖有限公司 | The antiviral cultural method of river crab |
| CN108377944A (en) * | 2018-01-30 | 2018-08-10 | 天津海升水产养殖有限公司 | A kind of swimming crab ecological breeding method for breeding |
-
2018
- 2018-09-14 CN CN201811074839.4A patent/CN109105311A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107711645A (en) * | 2017-11-16 | 2018-02-23 | 合肥康青源养殖有限公司 | The antiviral cultural method of river crab |
| CN108377944A (en) * | 2018-01-30 | 2018-08-10 | 天津海升水产养殖有限公司 | A kind of swimming crab ecological breeding method for breeding |
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