CN105994100A - Marine fish fry breeding device and method - Google Patents
Marine fish fry breeding device and method Download PDFInfo
- Publication number
- CN105994100A CN105994100A CN201610414942.3A CN201610414942A CN105994100A CN 105994100 A CN105994100 A CN 105994100A CN 201610414942 A CN201610414942 A CN 201610414942A CN 105994100 A CN105994100 A CN 105994100A
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- 241000251468 Actinopterygii Species 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000009395 breeding Methods 0.000 title abstract description 10
- 230000001488 breeding effect Effects 0.000 title abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 60
- 239000003337 fertilizer Substances 0.000 claims abstract description 18
- 241000239250 Copepoda Species 0.000 claims abstract description 8
- 241000700141 Rotifera Species 0.000 claims abstract description 8
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 4
- 239000013535 sea water Substances 0.000 claims description 19
- 239000010865 sewage Substances 0.000 claims description 16
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 claims description 14
- 230000001418 larval effect Effects 0.000 claims description 12
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 11
- 239000001301 oxygen Substances 0.000 claims description 11
- 229910052760 oxygen Inorganic materials 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 10
- 238000012216 screening Methods 0.000 claims description 10
- 238000003860 storage Methods 0.000 claims description 10
- 238000012258 culturing Methods 0.000 claims description 9
- 239000007789 gas Substances 0.000 claims description 8
- 238000001514 detection method Methods 0.000 claims description 7
- 230000008676 import Effects 0.000 claims description 7
- 230000000384 rearing effect Effects 0.000 claims description 7
- 238000005096 rolling process Methods 0.000 claims description 6
- 230000007812 deficiency Effects 0.000 claims description 5
- 229920003023 plastic Polymers 0.000 claims description 4
- 239000004033 plastic Substances 0.000 claims description 4
- 230000001502 supplementing effect Effects 0.000 claims description 4
- 241001247197 Cephalocarida Species 0.000 claims description 3
- 230000009182 swimming Effects 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 2
- 230000004083 survival effect Effects 0.000 abstract description 5
- 238000005273 aeration Methods 0.000 abstract description 3
- 239000003344 environmental pollutant Substances 0.000 abstract 6
- 231100000719 pollutant Toxicity 0.000 abstract 6
- 239000002689 soil Substances 0.000 description 5
- 239000010408 film Substances 0.000 description 4
- 239000010409 thin film Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000005485 electric heating Methods 0.000 description 2
- 210000003608 fece Anatomy 0.000 description 2
- 238000007667 floating Methods 0.000 description 2
- 239000008236 heating water Substances 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- 230000000366 juvenile effect Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 241000961004 Nibea albiflora Species 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 210000004602 germ cell Anatomy 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000036284 oxygen consumption Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K63/00—Receptacles for live fish, e.g. aquaria; Terraria
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K61/00—Culture of aquatic animals
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K63/00—Receptacles for live fish, e.g. aquaria; Terraria
- A01K63/04—Arrangements for treating water specially adapted to receptacles for live fish
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K63/00—Receptacles for live fish, e.g. aquaria; Terraria
- A01K63/04—Arrangements for treating water specially adapted to receptacles for live fish
- A01K63/042—Introducing gases into the water, e.g. aerators, air pumps
-
- 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
- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Marine Sciences & Fisheries (AREA)
- Animal Husbandry (AREA)
- Biodiversity & Conservation Biology (AREA)
- Zoology (AREA)
- Farming Of Fish And Shellfish (AREA)
Abstract
The invention provides a marine fish fry breeding device and method. The length-width ratio of a fry breeding pool is 3-6:1. The water inlet end and the flowing-out end of the fry breeding pool (3) are connected with a pond (1), and the volume of the pond is 14 times or more that of the fry breeding pool. The water inlet end is provided with a water-gas mixing device (2). The bottom face of the flowing-out end is provided with a pollutant collection groove (5). The throw-in density of fry in the fry breeding pool is larger than 60000 per cubic meter. Inorganic fertilizer containing N and P are poured into the pond to culture rotifer and copepoda and is fed into the fry breeding pool along with water. Pollutant is sucked from the pollutant collection groove on time. Compared with the prior art, fish fry is concentrated, observation and catching are convenient, feeding is concentrated, and the residue amount is small; pollutant is deposited in the pollutant collection groove, and discharge is convenient; water in the fry breeding pool is exchanged with water in the pond, and water exchange is not needed; water in the fry breeding pool is mixed with gas for aeration, pollutant is discharged at any time, good quality can be kept, and pond separated culture is not needed; experiments determine that the fry culture survival rate is 30-40%.
Description
Technical field
The present invention relates to a kind of seawater fish device for raising seedlings and method for culturing seedlings.
Background technology
Nursery is the process that hatch fish roe arrives seedling, is i.e. that incubating oosperm is obtained prelarva, makes it grow into the process of juvenile fish through postlarva by raising.Nursery at present is mostly to carry out in indoor nursery pond, during nursery, needs the bait such as a large amount of bait of throwing something and feeding, mainly wheel animalcule, artemia nauplii and Copepods, later stage mixed feed to be thrown something and fed.Also need to periodically go out dirt, change water with holding water quality well simultaneously, allow fry grow up in suitable environment.Fry density in nursery pond is about 23 ten thousand tails/cubic meter, and survival rate is 10 20%；Separately having disclosed maximum seedling density is 50,000 tails/cubic meter.
Nursery as stated above, owing to seedling density is low, therefore the observation to fry growth situation is relatively difficult, and throw something and feed bait relative distribution, residual volume are relatively big, and it is low that the receipts of fry results catch efficiency.And if increase merely the fry density in nursery pond, then can reduce survival rate because water quality is difficult to ensure that.It addition, in indoor raising of seedling, along with fry grows up, due to factors such as oxygen consumption increase, the increase of residual bait amount, Excreta increases, it is easy to cause water quality deterioration, therefore also need to repeatedly to divide pool cultivated, to alleviate water body burden.
The most existing method for culturing seedlings exists that water consumption is big, bait consumption is big, the high deficiency of human cost.
Summary of the invention
For above-mentioned deficiency, the technical problem to be solved is to improve fry density and keep enough survival rate, to provide a kind of effective highdensity seawater fish device for raising seedlings and method for culturing seedlings.
The seawater fish device for raising seedlings that the present invention provides, it it is a rectangular civil engineering nursery pond, the length-width ratio of described nursery pond is 361, current enter from a short end and flow out from another short end, and wherein water inlet end is provided with gas-vapor mix device, and the pool side of outflow end is overflow limit, anti-ease net it is provided with on overflow limit, offering sewage sump according to minor face on outflow end bottom surface, sewage sump has sewage draining exit to be connected with dredge pump, has safety net outside sewage draining exit；The water inlet end of described nursery pond and outflow end and a pond connect, and pond volume is more than 14 times of nursery pond volume.
The method for culturing seedlings of the seawater fish device for raising seedlings that the present invention provides, first renders to gained prelarva after hatch fish roe in nursery pond, then feeds by extent of growth with wheel animalcule, artemia nauplii, Copepods or supplementary mixed feed；In described nursery pond, the input density of prelarva is more than 60,000 tails/cubic meter；Described wheel animalcule, Copepods are sent into nursery pond from pond with water by discharging the inorganic fertilizer containing N, P to pond and cultivate and passing through gas-vapor mix device；Dirt is aspirated in timing from sewage sump.
The seawater fish device for raising seedlings of present invention offer and method for culturing seedlings, put into high density fry and the water in pond participate in the water circulation in nursery pond in nursery pond, simultaneously by the bait such as wheel animalcule, Copepods through breeding in pond with in current feeding nursery pond.Compared with prior art, owing to fry is concentrated, convenient observation and capture, save artificial input.For needing the feedstuff manually thrown something and fed, then scope of throwing something and feeding is little, Relatively centralized, and fry is good to the feed efficiency of feedstuff, less residue；Feedstuff residual and Excreta deposit at sewage sump with current, dump conveniently.Water in nursery pond is flowing, is constantly to exchange with the big water body in pond, reduces water consumption without often changing water.The water of nursery pond improves oxygen content through gas-vapor mix (aeration), gets rid of dirt the most at any time, although therefore the fry density in nursery pond is higher, but the water total energy in nursery pond keeps preferable quality, eliminates a point pool cultivated step.Measuring survival rate of seedling of the present invention through actual tests is 30 40%.
The seawater fish device for raising seedlings that the present invention provides, described nursery pond building is in pond, and the most at least two minor faces and a long limit are to build in the water body in pond, thus shorten inlet and outlet channel length.
Have a hatchery every a long limit by described nursery pond, convenient transfer prelarva and shorten prelarva transfer time, improve prelarva quality.
Described nursery pond has frame, and frame is provided with light screening material, to prevent high light from injuring fry.
Described light screening material is roll-type, illuminating lamp it is also equipped with in frame, nursery pond is arranged above illuminance transducer, and the control switch of light screening material rolling up and down machine and illuminating lamp and illuminance transducer are all connected with control unit, and in control unit, storage has illuminance standard level.Illumination in order to control suffered by nursery pond is the strongest the most weak.
Described light screening material is translucent plastics film, rain sensor is installed outside frame, rain sensor is also connected with control unit, and in control unit, also storage has rainfall standard value, and the command signal that control unit produces according to rain sensor switchs with the control of light screening material rolling up and down machine and is connected.When making rainfall be more than standard value, translucent plastics film is covered on nursery pond.
The added gas distribution pipe that is provided with of described nursery pond pool wall, gas distribution pipe is connected with air pump, is also equipped with dissolved oxygen amount sensor in nursery pond, and control switch and the dissolved oxygen amount sensor of air pump are all connected with control unit, and in control unit, storage has dissolved oxygen amount standard value.
Being provided with food density detection device in described pond, pond is provided with electric fertilizer apparatus, electric fertilizer apparatus and food density detection device and is connected with control unit, in control unit, storage has food density standard value.Food density detection device is typically to limit background and the camera head of scope, compares estimation food density through computer with standard picture, and electric fertilizer apparatus is typically fertilizer bin and applying mechanism, applying mechanism such as ejector pump, sheds machine etc..
Being provided with ammonia-nitrogen content sensor in described pond, ammonia-nitrogen content sensor is connected with control unit, and in control unit, storage has ammonia-nitrogen content standard value, and the command signal that control unit produces according to ammonia-nitrogen content sensor is connected with electric fertilizer apparatus.
The water inlet of described gas-vapor mix device connects pond and nursery pond respectively through two-bit triplet switching valve, and one, valve of switching is connection pond and water inlet, and another one is connection nursery pond and water inlet, for switching the outer circulation of larval rearing water and interior circulation.
The outlet of described gas-vapor mix device is also shown multiple, and they are distributed in the water inlet end edge total length of nursery pond, and described outlet is the jet pointing to water side.
The method for culturing seedlings of the seawater fish device for raising seedlings that the present invention provides,
1) in larval stages, gas-vapor mix device works with intermittently starting pattern, and the mesh of described anti-ease net and safety net is less than prelarva minimum dimension in nursery pond；
2) in larval stages, when it has been observed that the abundance of food deficiency supplied in pond, supplementing bait in the way of manually throwing something and feeding, gas-vapor mix device import simultaneously switches to circulation in larval rearing water；
3) in the postlarva stage, gas-vapor mix device works with whole day open mode, and the mesh of described anti-ease net and safety net is less than refined fish minimum dimension in nursery pond；
4) circulation in the import of gas-vapor mix device switches to larval rearing water during heavy rain；
5) in nursery pond, water velocity is less than the maximal rate keeping fry autonomous swimming.
Accompanying drawing explanation
Fig. 1 is the plane graph of device for raising seedlings in the present invention, and Fig. 2 is the elevation of device for raising seedlings in the present invention, in figure: 1-pond, 2-gas and water mixer, 3-nursery pond, 4-hatchery, 5-sewage sump.
Detailed description of the invention
As shown in Figure 1, 2, constructing two ponds side by side with civil engineering technique in a soil property pond 1, two ponds are all rectangular and are connected with long limit, and the long limit in one of them pond reclines bank, pond.In two ponds, by limit, pond is hatchery 4, and another is nursery pond 3.Nursery pond is 1 20 with the area ratio in pond, nursery pond length-width ratio 51.On one minor face of nursery pond, gas-vapor mix device 2 is installed, one or two three-way switch valve is installed on mixing arrangement water inlet, one, valve another two mouth of switching connects the outer circulation water sucking mouth of 30 centimetres, underwater, pond, and another connects the interior function of circular water absorption mouth of 20 centimetres, nursery pond underwater.Switching valve is for being connected by the water inlet of mixing arrangement with interior function of circular water absorption mouth or be connected with outer circulation water sucking mouth.Mixing arrangement outlet is according to being arranged in 40 centimeters at the bottom of pond in pool side total length, and outlet is the jet that water (flow) direction points to nursery pond other end minor face, and outlet drives the water entirety in nursery pond to flow to the other end from one end by jet water course.Another minor face of nursery pond is overflow limit, be provided with anti-ease net on overflow limit, to prevent fry from escaping nursery pond with current, inside overflow limit at the bottom of pond on to arrange a groove along this minor face be sewage sump 5, bottom land has sewage discharge tube to be connected with soil pick-up pump, is provided with safety net to prevent fry to be inhaled into outside sewage discharge tube.So-called safety net is peripheral at suction inlet, and suction is not enough to hinder the net of blockading arranged on the free-swimming position of fry, to prevent fry to be inhaled into soil pick-up pump.Nursery pond four limit upwards shelving, ceiling is installed roll-type and covers thin film, and covering thin film is black gray expandable plastic sheeting, is not only translucent but also waterproof.Roll-type covers thin film and is made up of the uncoupling shaft of thin film and motor and the gear driving uncoupling shaft volume.Illuminance transducer, temperature sensor are installed under ceiling, illuminating lamp is also installed under ceiling.Rain sensor is installed outside frame.Being provided with gas distribution pipe on nursery pond pool wall equably, gas distribution pipe is the pipe having venthole, and gas distribution pipe and an air pump connect.Having a floating platform in pond, floating platform is provided with a fertilizer bin, equipped with liquid fertilizer in fertilizer bin, fertilizer is the inorganic fertilizer containing N, P, and fertilizer bin end opening connects an ejector pump import.In pond, underwater different depth, zones of different are mounted with camera head, and the same distance in photographic head front of each camera head has an an equal amount of circular white background, has synchronous lighting during shooting.Pond is also equipped with ammonia-nitrogen content sensor.There is a control unit, its signal input connects each camera head, illuminance transducer, rain sensor, ammonia-nitrogen content sensor and oxygen content sensor through wireless transmitter, and its signal output part connects volume Electrical Discharge Machine, illuminating lamp, ejector pump, the on and off switch of air pump.Control unit has a computer, wherein preserves food density standard value, bait identification program and illuminance standard level, rainfall standard value, ammonia-nitrogen content standard value and oxygen content standard value.Control unit is also connected with soil pick-up pump, gas-vapor mix device.Being provided with electric heating water heater on the pool wall of hatchery, be provided with temperature sensor in nursery pond, frame end installs ventilation electric fan, and they are all connected with control unit, stores hatchery coolant-temperature gage and control standard value in control unit.Hatchery is provided with axial flow type stirrer.
During operation, as a example by Nibea albiflora nursery, salinity on request, the degree of depth get out pond and nursery pond, hatchery, germ cell are put in hatchery and hatch, open control unit, regulate water temperature according to temperature electric heating water heater or the ventilation electric fan of temperature sensors feedback in hatchery.The biological feed such as culture of rotifera, Copepods in pond, opens gas-vapor mix device, switches to outer circulation to make the water in pond and nursery pond start the cycle over and stirred simultaneously.After fish roe starts to hatch prelarva, with biological feed of manually throwing something and feeding in hatchery, when more than larvae growth to 8 millimeter, transferring them to nursery pond, nursery pond always proceeds to fry amount 80,000 tails/cubic meter the most in batches.Put into from young Seedling and start to open soil pick-up pump, volume Electrical Discharge Machine, illuminating lamp, ejector pump, air pump etc. and accept control unit control.Control unit controls film rolling according to the nursery pond illumination that illuminance transducer obtains and puts or illuminate；Control film rolling according to rain sensor put and switch inner-outer circulation；Image result of calculation in a computer and the fertilising of ammonia-nitrogen content sensor feedback Data Control ejector pump is obtained according to camera head；Feedback data according to oxygen content sensor controls air pump and carries out nursery pond supplementing aeration, it is ensured that nursery pond obtains the irradiation of standard, oxygen content and the abundance of food.Periodically dump from nursery pond extraction sewage, pour into supplementary sea water simultaneously to pond.Situation in period manual observation nursery pond, in the larval stages of a length of less than 15 millimeters of fry body, gas-vapor mix device is to open the intermittently starting pattern work stopping 2 hours for 4 hours, and the mesh of described anti-ease net and safety net is 60 mesh；During as found the abundance of food deficiency supplied in pond, supplementing bait in time in the way of manually throwing something and feeding, gas-vapor mix device import simultaneously switches to circulation in larval rearing water；In the postlarva stage of whole fry body length more than 15 millimeters, gas-vapor mix device works with whole day open mode, and the mesh of more relieve a garrison ease net and safety net is 40 mesh；In when additionally arranging heavy rain, the import of gas-vapor mix device switches to larval rearing water, circulation and water velocity in nursery pond are less than the maximal rate keeping fry autonomous swimming.Emerge when whole fry body length enter juvenile stage more than 25 millimeters.Process incident in time, the 36.89% of the prelarva amount that final acquisition fry amount is about put into.
Claims (10)
1. a seawater fish device for raising seedlings, it it is a rectangular civil engineering nursery pond, the length-width ratio that it is characterized in that described nursery pond is 361, current enter from a short end and flow out from another short end, and wherein water inlet end is provided with gas-vapor mix device, and the pool side of outflow end is overflow limit, anti-ease net it is provided with on overflow limit, offering sewage sump according to minor face on outflow end bottom surface, sewage sump has sewage draining exit to be connected with dredge pump, has safety net outside sewage draining exit；The water inlet end of described nursery pond and outflow end and a pond connect, and pond volume is more than 14 times of nursery pond volume.
2. seawater fish device for raising seedlings as claimed in claim 1, it is characterized in that the water inlet of described gas-vapor mix device connects pond and nursery pond respectively through two-bit triplet switching valve, one, valve of switching is connection pond and water inlet, and another one is connection nursery pond and water inlet.
3. seawater fish device for raising seedlings as claimed in claim 1, is characterized in that the outlet of described gas-vapor mix device and shows multiple, and they are distributed in the water inlet end edge total length of nursery pond, and described outlet is the jet pointing to water side.
4. seawater fish device for raising seedlings as claimed in claim 1, it is characterized in that described nursery pond pool wall is added and be provided with gas distribution pipe, gas distribution pipe is connected with air pump, nursery pond is also equipped with dissolved oxygen amount sensor, control switch and the dissolved oxygen amount sensor of air pump are connected with control unit, and in control unit, storage has dissolved oxygen amount standard value.
Seawater fish device for raising seedlings the most as claimed in claim 1 or 2 or 3 or 4, it is characterized in that described nursery pond has frame, light screening material is installed on frame, described light screening material is roll-type, illuminating lamp it is also equipped with in frame, nursery pond is arranged above illuminance transducer, and the control switch of light screening material rolling up and down machine and illuminating lamp and illuminance transducer are connected with control unit, and in control unit, storage has illuminance standard level.
6. seawater fish device for raising seedlings as claimed in claim 5, it is characterized in that described light screening material is translucent plastics film, rain sensor is installed outside frame, rain sensor connects on the control unit, in control unit, also storage has rainfall standard value, and the command signal that control unit produces according to rain sensor switchs with the control of light screening material rolling up and down machine and is connected.
Seawater fish device for raising seedlings the most as claimed in claim 1 or 2 or 3 or 4, it is characterized in that described pond is provided with food density detection device and/or ammonia-nitrogen content sensor, electric fertilizer apparatus is installed on pond, electric fertilizer apparatus and food density detection device, ammonia-nitrogen content sensor are connected with control unit, and in control unit, storage has food density standard value and ammonia-nitrogen content standard value.
8. seawater fish device for raising seedlings as claimed in claim 5, it is characterized in that described pond is provided with food density detection device and/or ammonia-nitrogen content sensor, electric fertilizer apparatus is installed on pond, electric fertilizer apparatus and food density detection device, ammonia-nitrogen content sensor are connected with control unit, and in control unit, storage has food density standard value and ammonia-nitrogen content standard value.
9. the method for culturing seedlings of seawater fish device for raising seedlings as claimed in claim 1, first renders to gained prelarva after hatch fish roe in nursery pond, then feeds by extent of growth with wheel animalcule, artemia nauplii, Copepods or supplementary mixed feed；It is characterized in that the input density of prelarva in described nursery pond is more than 60,000 tails/cubic meter；Described wheel animalcule, Copepods are sent into nursery pond from pond with water by discharging the inorganic fertilizer containing N, P to pond and cultivate and passing through gas-vapor mix device；Dirt is aspirated in timing from sewage sump.
10. the method for culturing seedlings of seawater fish device for raising seedlings as claimed in claim 9, is characterized in that:
1) in larval stages, gas-vapor mix device works with intermittently starting pattern, and the mesh of described anti-ease net and safety net is less than prelarva minimum dimension in nursery pond；
2) in larval stages, when it has been observed that the abundance of food deficiency supplied in pond, supplementing bait in the way of manually throwing something and feeding, gas-vapor mix device import simultaneously switches to circulation in larval rearing water；
3) in the postlarva stage, gas-vapor mix device works with whole day open mode, and the mesh of described anti-ease net and safety net is less than refined fish minimum dimension in nursery pond；
4) circulation in the import of gas-vapor mix device switches to larval rearing water during heavy rain；
5) in nursery pond, water velocity is less than the maximal rate keeping fry autonomous swimming.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610414942.3A CN105994100B (en) | 2016-06-15 | 2016-06-15 | Seawater fish seedling raising device and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610414942.3A CN105994100B (en) | 2016-06-15 | 2016-06-15 | Seawater fish seedling raising device and method |
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| Publication Number | Publication Date |
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| CN105994100A true CN105994100A (en) | 2016-10-12 |
| CN105994100B CN105994100B (en) | 2022-02-25 |
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| CN201610414942.3A Expired - Fee Related CN105994100B (en) | 2016-06-15 | 2016-06-15 | Seawater fish seedling raising device and method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106472395A (en) * | 2016-11-24 | 2017-03-08 | 盐城师范学院 | Mudflat seawater culturing pool automatic water changer |
| CN112889711A (en) * | 2021-01-15 | 2021-06-04 | 中国水产科学研究院黑龙江水产研究所 | Artificial breeding method of yellow large-scale barbel |
| CN113383733A (en) * | 2021-07-27 | 2021-09-14 | 中国水产科学研究院东海水产研究所 | Artificial cultivation method for young spiny head mermaid |
| CN114667958A (en) * | 2022-03-17 | 2022-06-28 | 营口市农业农村综合发展服务中心 | Artificial breeding facility and breeding method for Chinese tiger head crabs |
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