CN209218928U - A kind of cray batch production spawning and hatching device - Google Patents

A kind of cray batch production spawning and hatching device Download PDF

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Publication number
CN209218928U
CN209218928U CN201821903087.3U CN201821903087U CN209218928U CN 209218928 U CN209218928 U CN 209218928U CN 201821903087 U CN201821903087 U CN 201821903087U CN 209218928 U CN209218928 U CN 209218928U
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China
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cray
spawning
hatching
pond
water
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Expired - Fee Related
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CN201821903087.3U
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Chinese (zh)
Inventor
刘艳春
张士华
蒋万钊
黄小珊
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Dongying Marine Economic Development Research Institute
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Dongying Marine Economic Development Research Institute
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A40/00Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
    • Y02A40/80Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in fisheries management
    • Y02A40/81Aquaculture, e.g. of fish

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Abstract

The utility model discloses a kind of cray batch production spawning and hatching devices, including workshop and the cray spawning and hatching pond being laid in inside workshop, cray spawning and hatching room;Cray spawning and hatching pond is used equipped with water inlet pipe, drainpipe and the cement pit for being oxygenated pipe, and bottom of pond, pool wall cover two layers of mesh, put suitable water plant in water body in a suitable place to breed;Cray spawning and hatching room is set in cray spawning and hatching pond, is used plastic tube and is disposed vertically, and the inner wall of plastic tube has one or two layers mesh, and the bottom end of plastic tube is closed with mesh;Cray spawning and hatching room accumulation regions top is equipped with the inclined climbing slope surface into water, climbs the middle part setting bait platform of slope surface.The utility model passes through simulation cray nature cave, it is ensured that cray realizes good spawning and hatching rate;It is structurally reasonable, it is easy to operate;Materials are easy, and cost is relatively low;It is practical, there is important demonstration and promotional value.

Description

A kind of cray batch production spawning and hatching device
Technical field
The utility model relates to aquaculture fields, and in particular to a kind of cray batch production spawning and hatching device.
Background technique
Cray, scientific name Procambius clarkii (Procambarus clarkii), also known as red marsh crayfish, cray or Lead and cadnium originates in northern Mexico and southern US, and Crustachia, Decapoda, Astacidae, original are subordinate in Zootaxy Astacus, live in freshet, lake, reservoir, pond, streams, marsh, in irrigation canals and ditches.It is transplanted within 1918 Honshu of Japan, Nanjing is about introduced by Japan in phase later 1930s, starts to multiply in Nanjing and its suburbs and counties under the jurisdiction of a large city later;Due to the shrimp Wide adaptability, vitality and reproductive capacity are strong, not high to water quality requirement, quickly throughout each corner of the Yangtze river basin.It is complete at present The small cultivation of the small dragon of state is a piece of red as fire, and national cultured area in 2016 is more than 9,000,000 mu, and 85.23 ten thousand tons of cultured output, the output value 564.10 hundred million yuan, the economic gross output value 1466.10 hundred million, complete nearly 5,000,000 people of industrial chain practitioner, for the life of the world's largest cray Produce state.In recent years, China cray is constantly in the state that supply falls short of demand.
In cray aquaculture industry chain, breeding shrimp seedling link is the most important thing.The modes of reproduction of cray has it certainly The particularity of body, it may be assumed that dig a hole, a female or two female one male inhabitations want oogenesis, the young is still without departing from mother after hatching after oviposition Body, female shrimp is without departing from cave during breeding.There are mainly three types of the modes for obtaining cray seed at present: first is that natural pond is numerous It grows.The breeding of natural pond refers in the pond of cultivation cray, allows its nature under conditions of not increasing any artificial measures Breeding, to achieve the purpose that cray is proliferated.Its method is: being leveled before close shrimp is launched to pond, except wild, disinfection is applied Fertilizer, plantation water plant, then launch close shrimp, close shrimp are allowed to burrow, into hole in voluntarily breed;To March in next year, cray is just had Cave is left, ingests out, activity, starts to feed and catch into shrimp at this time.This propagation method is suitable for small lakes, marsh The biggish pond of ground, area and low-lying rice field;It can also be used for the biggish intensive fish pond of area;For plant-type lake, seed shrimp is put into Grass and fertilising need not be then planted afterwards.Natural pond breed the shortcomings that be: low output, can only this pond use, it is impossible to be used in Seedling production. Second is that half-manual breeding.Half-manual breeding refers to be controlled by artificial part, to achieve the purpose that cray breeds.Its method It is: puts in a suitable place to breed and first breeding pool leveled before close shrimp, sterilized, except open country, then launches the close shrimp by selecting.Keep good Water quality, periodically fills new water, feeds the water plants such as the higher bait of some animal protein contents and water hyacinth more, can build The greenhouse of sunshade promotes mating the parent shrimps, oviposition by Factors such as manual control temperature, illumination, water quality, water levels.It is this numerous Mode is grown suitable for pond culture.The shortcomings that half-manual breeding is: low output is unable to meet production demand.Third is that full artificial breeding It grows.Refer to that breeding overall process all reaches predetermined purpose by artificially controlling.This reproductive modes controllability and operability are stronger, It is substantially carried out in cement pit indoors, has many advantages, such as that density is big, yield is high, high survival rate.Its method is: cement water Body is 80 centimetres or so deep, the settable a large amount of artificial nest in bottom, such as finger stone, tile, hangs a small amount of water plant such as water calabash Reed, water peanut, bog pondweed, hydrilla verticillata etc. induce small dragon by a series of control illumination, the measure of water temperature, water quality, water level Shrimp mating the parent shrimps, oviposition.But the seedling raising manners of this complete artificial batch production are only being tested currently without being succeeded Stage.Its major defect is: environmental condition and natural environmental condition great disparity are too big, and the spawning and hatching rate of cray is all lower.
Utility model content
In view of the drawbacks of the prior art, the utility model provides a kind of cray batch production spawning and hatching device, basis The special modes of reproduction of cray simulates nature cave, artificial to manufacture more perfect, comfortable, reliable artificial cray oviposition Hatching house provides advantageous environmental condition for the breeding of cray, increases substantially the spawning and hatching rate of cray.
The technical solution of the utility model is: including workshop and the cray spawning and hatching pond being laid in inside workshop, small Lobster spawning and hatching room;Cray spawning and hatching pond is used equipped with water inlet pipe, drainpipe and the cement pit for being oxygenated pipe, pond Bottom, pool wall cover two layers of mesh adhered to and climbed convenient for cray, put suitable water plant, the top of pool wall in a suitable place to breed in water body Anti-escape shading cloth equipped with certain altitude;Cray spawning and hatching room is set in cray spawning and hatching pond, and cray produces Egg hatching room uses plastic tube, and plastic tube is disposed vertically in cray spawning and hatching pond bottom of pond or in the ad hoc platform in the top of bottom of pond It places, the both ends of plastic tube are smooth and port is vertical with pipe shaft, and pipe shaft is equipped with several apertures for water body exchange, plastic tube Inner wall is with one or two layers convenient for the mesh of cray disengaging climbing, and the bottom end of plastic tube is closed with mesh, same seat The height of cray spawning and hatching room in cray hatchery is consistent, the top certain distance dew of cray spawning and hatching room The water surface out, cray spawning and hatching room accumulation regions top are equipped with the inclined climbing slope surface for facilitating cray to pass in and out into water, climb Bait platform is arranged in the middle part in climbing face.
Above-mentioned technical proposal can advanced optimize are as follows:
Cray spawning and hatching pond is additionally provided with heater.
The cray spawning and hatching tank depth 100cm;The height 60-90 cm of cray spawning and hatching room, wherein being located at The 20-30 cm on top exposes the surface.
Anti-escape shading cloth height above cray spawning and hatching pond is 20cm, and material uses plastic cloth.
The kind of the water plant uses water peanut, waterweed and water hyacinth;The area of water plant covering accounts for the 2/3 of the water surface.
The mesh uses screen of screen window or bolting silk net.
Cray spawning and hatching room is set as several rows, be distributed in the one side in cray spawning and hatching pond, two sides, three faces, Surrounding or centre, distribution area account for the 1/3 of cray spawning and hatching pond internal area.
The plastic tube uses PVC plastic pipe.
The internal diameter of the plastic tube is 63-75mm.
The utility model has the following beneficial effects:
1. using simulation design, cray spawning and hatching room places oneself in the midst of cray seemingly naturally like natural cave In environment, one female one male or two female one male requirements, it is latent can to give full play to cray breeding when meeting cray spawning and hatching Power, it is ensured that cray realizes good spawning and hatching rate.
2. it is structurally reasonable, it is easy to operate.
3. materials are easy, cost is relatively low.
4. it is practical, there is important demonstration and promotional value.
Detailed description of the invention
Fig. 1 is the utility model overlooking structure diagram;
Fig. 2 is the utility model positive structure diagram;
Fig. 3 is the utility model side structure schematic view;
Fig. 4 is that structure of the utility model cray spawning and hatching room in the case of the surrounding of cray spawning and hatching pond is shown It is intended to;
Fig. 5 is that the structure that the utility model cray spawning and hatching room is set in the situation of cray spawning and hatching pond center is shown It is intended to;
In figure: 1- cray spawning and hatching pond, 1.1- cray spawning and hatching pond pool wall, 2- cray spawning and hatching room, 3- climbs slope surface, 4- water body, 5- water inlet pipe, 6- bait platform, 7- water plant, 8- drainpipe, 9- oxygenation pipe.
Specific embodiment
The utility model is described in detail below with reference to examples and drawings.
Embodiment 1
Referring to Fig. 1, Fig. 2, Fig. 3, Fig. 4 and Fig. 5.A kind of cray batch production spawning and hatching device, including workshop and laying Cray spawning and hatching pond 1, cray spawning and hatching room 2 inside workshop.Cray spawning and hatching pond 1 uses cement pit, It is equipped with water inlet pipe 5, drainpipe 8 and oxygenation pipe 9, can connect oxygenation pipe 9 with air blower to ensure oxygen supply.According to locality Temperature height, cray spawning and hatching pond 1 can be equipped with necessary heating equipment, such as be equipped with the electric heater of certain power, Meet the optimum temperature of cray spawning and hatching as far as possible.The bottom of pond in cray spawning and hatching pond 1, pool wall 1.1 cover two layers The screen of screen window or bolting silk net for adhering to convenient for cray and climbing;Plastic cloth of the top of pool wall 1.1 equipped with 20cm high is as anti-escape Shading cloth.Put suitable water plant 7 in water body 4 in a suitable place to breed, the kind of water plant uses water peanut, waterweed and water hyacinth;Water plant covering Area accounts for the 2/3 of the water surface.1 depth 100cm of cray spawning and hatching pond.1 area of cray spawning and hatching pond is changeable, and more than ten It square metre is ok to tens square metres.Cray spawning and hatching pond 1 can be newly-built, be also possible to original;If new It builds, it be by removing alkali process.Cray spawning and hatching room 2 is set in cray spawning and hatching pond 1.Cray spawning and hatching room 2 use plastic tube, and plastic tube is disposed vertically in the bottom of pond in cray spawning and hatching pond 1 or puts in the ad hoc platform in the top of bottom of pond It sets;Plastic tube uses PVC plastic pipe or other non-toxic plastic pipes;The internal diameter of plastic tube is 63-75mm;The both ends of plastic tube are smooth And port is vertical with pipe shaft, pipe shaft is equipped with several apertures for water body exchange, and the inner wall of plastic tube has one or two layers just In the screen of screen window or bolting silk net of cray disengaging climbing, bottom end screen of screen window or the bolting silk net closing of plastic tube.The same small dragon of seat The height of cray spawning and hatching room 2 in shrimp hatchery 1 is consistent.2 accumulation regions top of cray spawning and hatching room be equipped with to Bait platform 6 is arranged in the inclined climbing slope surface 3 for facilitating cray to pass in and out in water, the middle part of climbing slope surface 3.It is produced according to cray Tens of, hundreds of cray spawning and hatching rooms 2, cray spawning and hatching room 2 can be set in the size in egg hatching pond 1 Distribution area account for the 1/3 of 1 internal area of cray spawning and hatching pond.The height 60cm of cray spawning and hatching room 2, wherein position 20cm in top exposes the surface.Cray spawning and hatching room 2 is set as several rows, be distributed in cray spawning and hatching pond 1 one side, Two sides or three faces.
Embodiment 2
Referring to Fig. 1, Fig. 2, Fig. 3, Fig. 4 and Fig. 5.A kind of cray batch production spawning and hatching device, including workshop and laying Cray spawning and hatching pond 1, cray spawning and hatching room 2 inside workshop.Cray spawning and hatching pond 1 uses cement pit, It is equipped with water inlet pipe 5, drainpipe 8 and oxygenation pipe 9, can connect oxygenation pipe 9 with air blower to ensure oxygen supply.It can basis Local temperature height, is equipped with necessary heating equipment, such as be equipped with the electric heater of certain power.Cray spawning and hatching pond 1 Bottom of pond, pool wall 1.1 cover two layers convenient for cray adhere to and climb screen of screen window or bolting silk net;The top of pool wall 1.1 is set There is the plastic cloth of 20cm high as anti-escape shading cloth.Put suitable water plant 7 in water body 4 in a suitable place to breed, the kind of water plant using water peanut, she Happy algae and water hyacinth;The area of water plant covering accounts for the 2/3 of the water surface.1 depth 100cm of cray spawning and hatching pond.Cray oviposition 1 area of hatchery is changeable, and more than ten square metres to tens square metres are ok.Cray spawning and hatching pond 1 can be newly-built , it is also possible to original;If newly-built, it be by removing alkali process.Cray spawning and hatching room 2 is set to cray oviposition and incubates Change in pond 1.Cray spawning and hatching room 2 use plastic tube, plastic tube be disposed vertically in cray spawning and hatching pond 1 bottom of pond or In the top of bottom of pond, ad hoc platform is placed;Plastic tube uses PVC plastic pipe or other non-toxic plastic pipes;The internal diameter of plastic tube is 63-75mm;The both ends of plastic tube are smooth and port is vertical with pipe shaft, and pipe shaft is equipped with several apertures for water body exchange, plastics The inner wall of pipe is with one or two layers convenient for the screen of screen window or bolting silk net of cray disengaging climbing, the bottom end screen of screen window of plastic tube Or bolting silk net closing.The height of cray spawning and hatching room 2 in same seat cray hatchery 1 is consistent.Cray oviposition 2 accumulation regions top of hatching house is equipped with the inclined climbing slope surface 3 for facilitating cray to pass in and out into water, and the middle part of climbing slope surface 3 is set Set bait platform 6.According to the size in cray spawning and hatching pond 1, tens of, hundreds of cray ovipositions can be set and incubate Change room 2, the distribution area of cray spawning and hatching room 2 accounts for the 1/3 of 1 internal area of cray spawning and hatching pond.Cray oviposition 75 cm of height of hatching house 2, wherein superposed 25cm exposes the surface.Cray spawning and hatching room 2 is set as several rows, distribution Surrounding in cray spawning and hatching pond 1.
Embodiment 3
Referring to Fig. 1, Fig. 2, Fig. 3, Fig. 4 and Fig. 5.A kind of cray batch production spawning and hatching device, including workshop and laying Cray spawning and hatching pond 1, cray spawning and hatching room 2 inside workshop.Cray spawning and hatching pond 1 uses cement pit, It is equipped with water inlet pipe 5, drainpipe 8 and oxygenation pipe 9, can connect oxygenation pipe 9 with air blower to ensure oxygen supply.It can basis Local temperature height, is equipped with necessary heating equipment, such as be equipped with the electric heater of certain power.Cray spawning and hatching pond 1 Bottom of pond, pool wall 1.1 cover two layers convenient for cray adhere to and climb screen of screen window or bolting silk net;The top of pool wall 1.1 is set There is the plastic cloth of 20cm high as anti-escape shading cloth.Put suitable water plant 7 in water body 4 in a suitable place to breed, the kind of water plant using water peanut, she Happy algae and water hyacinth;The area of water plant covering accounts for the 2/3 of the water surface.1 depth 100cm of cray spawning and hatching pond.Cray oviposition 1 area of hatchery is changeable, and more than ten square metres to tens square metres are ok.Cray spawning and hatching pond 1 can be newly-built , it is also possible to original;If newly-built, it be by removing alkali process.Cray spawning and hatching room 2 is set to cray oviposition and incubates Change in pond 1.Cray spawning and hatching room 2 use plastic tube, plastic tube be disposed vertically in cray spawning and hatching pond 1 bottom of pond or In the top of bottom of pond, ad hoc platform is placed;Plastic tube uses PVC plastic pipe or other non-toxic plastic pipes;The internal diameter of plastic tube is 63-75mm;The both ends of plastic tube are smooth and port is vertical with pipe shaft, and pipe shaft is equipped with several apertures for water body exchange, plastics The inner wall of pipe is with one or two layers convenient for the screen of screen window or bolting silk net of cray disengaging climbing, the bottom end screen of screen window of plastic tube Or bolting silk net closing.The height of cray spawning and hatching room 2 in same seat cray hatchery 1 is consistent.Cray oviposition 2 accumulation regions top of hatching house is equipped with the inclined climbing slope surface 3 for facilitating cray to pass in and out into water, and the middle part of climbing slope surface 3 is set Set bait platform 6.According to the size in cray spawning and hatching pond 1, tens of, hundreds of cray ovipositions can be set and incubate Change room 2, the distribution area of cray spawning and hatching room 2 accounts for the 1/3 of 1 internal area of cray spawning and hatching pond.Cray oviposition 90 cm of height of hatching house 2, wherein superposed 30 cm exposes the surface.Cray spawning and hatching room 2 is set as several rows, distribution In the centre in cray spawning and hatching pond 1.
The operation principle and using method of the utility model is as follows:
First, in accordance with above-mentioned technical proposal manual manufacture cray spawning and hatching pond and cray spawning and hatching room, it is equipped with phase Facility is answered, the basic condition of a suitable cray spawning and hatching is created.Before water inlet, cray spawning and hatching pond, oviposition are incubated Thorough disinfection will be carried out by changing room etc..In 6-8 month, start the water inlet of nursery the last week, water inlet will remove impurity and enemy by filtering Biology, inflow are subject to that there are spawning and hatching room tops 20 to 30cm height gap.It to be put into spawning and hatching pond suitable Water plant.Close shrimp is selected to require female shrimp individual at 35 grams/fish or more, male shrimp individual physically well develops at 40 grams/fish or more, and constitution is strong Health, appendage is complete, bright in colour, disease-free and injury-free.Close shrimp is first placed in water body before putting in a suitable place to breed and impregnates 3-5 by the close shrimp of long-distance transport Minute, then it is placed on pool side 2-3 minutes, it 2-3 times repeatedly, after allowing close shrimp to suction water, is placed in bait table, it is allowed slowly to put Enter in pond.According to the quantity of spawning and hatching room, close shrimp, the close shrimp of dispensing are launched according to the ratio of hatching house male and female 1:1 or 2:1 Answer specification consistent.It needs to carry out reinforced cultivating before close shrimp breeding, to supplement shrimp body nutrition, promotes gonad development;It generally feeds dynamic The high feed of object protein content (such as minced fillet, fish guts and tankage), cooperation feed plant feed (such as dregs of beans, chaff Bran etc.).Spawning and hatching pond is changed water 1 time for every 3-5 days;According to water quality situation, it is necessary to when to drain water body, clean shrimp ponds, in time Oxygenation makes water body keep dissolved oxygen sufficient, pure and fresh.Close shrimp about lays eggs in mid-October successively after reinforced cultivating;Fertilized eggs warp It spends 20-40 days and hatches, so that it may become young shrimp.Cray during incubation, ingests less, it should be noted that observation, adjustment is fed in time Quantity.When finding there are a large amount of young shrimps to occur in cray spawning and hatching pond, pull out in time.

Claims (9)

1. a kind of cray batch production spawning and hatching device, it is characterised in that: including workshop and the small dragon being laid in inside workshop Shrimp spawning and hatching pond, cray spawning and hatching room;Cray spawning and hatching pond, which uses, is equipped with water inlet pipe, drainpipe and oxygenation The cement pit of pipe, bottom of pond, pool wall cover two layers of mesh adhered to and climbed convenient for cray, put water plant, pond in a suitable place to breed in water body The top of wall is equipped with the anti-escape shading cloth of certain altitude;Cray spawning and hatching room is set in cray spawning and hatching pond, Cray spawning and hatching room uses plastic tube, and plastic tube is disposed vertically in cray spawning and hatching pond bottom of pond or in the top of bottom of pond Ad hoc platform is placed, and the both ends of plastic tube are smooth and port is vertical with pipe shaft, and pipe shaft is equipped with several apertures for water body exchange, The inner wall of plastic tube with one or two layers convenient for the mesh of cray disengaging climbing, sealed with mesh by the bottom end of plastic tube It closes, the height of the cray spawning and hatching room in same seat cray hatchery is consistent, the top of cray spawning and hatching room Certain distance exposes the surface, and cray spawning and hatching room accumulation regions top facilitates climbing for cray disengaging equipped with inclined into water The middle part setting bait platform of slope surface is climbed in climbing face.
2. a kind of cray batch production spawning and hatching device according to claim 1, it is characterised in that: the cray produces Egg hatching pond is additionally provided with heater.
3. a kind of cray batch production spawning and hatching device according to claim 1, it is characterised in that: the cray produces Egg hatching tank depth 100cm;The height 60-90 cm of cray spawning and hatching room, wherein superposed 20-30 cm exposes water Face.
4. a kind of cray batch production spawning and hatching device according to claim 1, it is characterised in that: the cray produces Anti-escape shading cloth height above egg hatching pond is 20cm, and material uses plastic cloth.
5. a kind of cray batch production spawning and hatching device according to claim 1, it is characterised in that: the product of the water plant Kind uses water peanut, waterweed and water hyacinth;The area of water plant covering accounts for the 2/3 of the water surface.
6. a kind of cray batch production spawning and hatching device according to claim 1, it is characterised in that: the mesh is adopted With screen of screen window or bolting silk net.
7. a kind of cray batch production spawning and hatching device according to claim 1, it is characterised in that: the cray produces Egg hatching room is set as several rows, is distributed in one side, two sides, three faces, surrounding or the centre in cray spawning and hatching pond, distribution area Account for the 1/3 of cray spawning and hatching pond internal area.
8. a kind of cray batch production spawning and hatching device according to claim 1, it is characterised in that: the plastic tube is adopted Use PVC plastic pipe.
9. a kind of cray batch production spawning and hatching device according to claim 1, it is characterised in that: the plastic tube Internal diameter is 63-75mm.
CN201821903087.3U 2018-11-19 2018-11-19 A kind of cray batch production spawning and hatching device Expired - Fee Related CN209218928U (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111387111A (en) * 2020-05-13 2020-07-10 广西壮族自治区水产技术推广站 Fry picking device and method for breeding of red swamp crayfish
CN111387125A (en) * 2020-04-22 2020-07-10 广西壮族自治区水产科学研究院 Industrial crayfish breeding pond
CN111838058A (en) * 2020-07-30 2020-10-30 中国科学院水生生物研究所 Efficient egg hatching device for procambarus clarkii and experimental method
CN112471055A (en) * 2020-11-26 2021-03-12 四川省农业科学院水产研究所(四川省水产研究所) Hucho taimen fertilized egg conveying device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111387125A (en) * 2020-04-22 2020-07-10 广西壮族自治区水产科学研究院 Industrial crayfish breeding pond
CN111387111A (en) * 2020-05-13 2020-07-10 广西壮族自治区水产技术推广站 Fry picking device and method for breeding of red swamp crayfish
CN111838058A (en) * 2020-07-30 2020-10-30 中国科学院水生生物研究所 Efficient egg hatching device for procambarus clarkii and experimental method
CN111838058B (en) * 2020-07-30 2022-01-14 中国科学院水生生物研究所 Efficient egg hatching device for procambarus clarkii and experimental method
CN112471055A (en) * 2020-11-26 2021-03-12 四川省农业科学院水产研究所(四川省水产研究所) Hucho taimen fertilized egg conveying device

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