CN109832219A - A method of improving cray weed survival rate - Google Patents

A method of improving cray weed survival rate Download PDF

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Publication number
CN109832219A
CN109832219A CN201910261267.9A CN201910261267A CN109832219A CN 109832219 A CN109832219 A CN 109832219A CN 201910261267 A CN201910261267 A CN 201910261267A CN 109832219 A CN109832219 A CN 109832219A
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CN
China
Prior art keywords
seedling
shrimp seedling
cage
survival rate
cray
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Pending
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CN201910261267.9A
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Chinese (zh)
Inventor
顾泽茂
刘永鑫
金玉立
翟艳花
李丹
陈祖萱
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Huazhong Agricultural University
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Huazhong Agricultural University
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Priority to CN201910261267.9A priority Critical patent/CN109832219A/en
Publication of CN109832219A publication Critical patent/CN109832219A/en
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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 invention discloses a kind of methods for improving cray weed survival rate, belong to crayfish breeding technique field.The present invention is by getting rid of cage and the joint trapping of long cage, different size shrimp seedling is dispensed, the temperature of strict control shrimp seedling local environment in transportational process, humidity and oxygen content, it puts and is cleaned up the pond the new pool before seedling, except wild, kind grass and regulating water quality, and it is handled to replenishing vitamins C and glucose etc. in the pool, to reduce shrimp seedling damage rate, enhance the anti-stress ability of shrimp seedling and the adaptability to environment, the survival rate that shrimp seedling catches transport from, launches the stage is improved, significant economic benefit is produced.

Description

A method of improving cray weed survival rate
Technical field
The invention belongs to crayfish breeding technique fields, and in particular to a method of improve cray weed survival rate.
Background technique
Cray, scientific name Procambius clarkii belong to Arthropoda, Crustachia, Decapoda, crayfish section, former Astacus, are A kind of important economic freshwater cultivated animals in China, have many advantages, such as fine and tender taste, delicious flavour.Since market needs cray The advantages that increasingly increase and cray aquaculture cost asked are low, income is fast, profit is high, promotes the fluffy of cray aquaculture The exhibition of breaking out.
During scale cray breeding production, shrimp seedling breeds and gradually forms the division of labor at shrimp aquaculture, by shrimp seedling It needs to launch by long-distance transport after fishing, therefore fishing, transport and the dispensing of shrimp seedling are cray breeding production processes In important link.Cray seed in fishing, transport and put seedling etc. during all show stress reaction, survival rate is lower, It is all dead that misoperation easily leads to seed, therefore how to improve cray weed survival rate and have become cray large-scale cultivation With the technical bottleneck of industrialization.
Summary of the invention
It is bred in view of current shrimp seedling and at shrimp aquaculture has gradually formed the division of labor, by fishing for young shrimps, long-distance transport and dispensing Period, the purpose of the present invention is to provide a kind of sides for improving cray weed survival rate since stress reaction causes survival rate low Method.
Method provided by the invention the following steps are included:
1) fishing for young shrimps
It selects fine warm gentle breeze weather to catch seedling, gets rid of cage and the joint trapping of long cage, the pond bank Wei Gou and the inner edge Nei Geng are with getting rid of Cage, the long cage in rice field centre, lower cage, Yu Ci morning 3-4 check and accept cage, shrimp seedling are taken out, be placed in seedling basket at dusk, fastly Speed is transported to bank;
2) shrimp seedling dispenses
Shrimp seedling sorting: selecting that neat specification, appendage are complete, shell cyan is light, great-hearted shrimp seedling, the shrimp seedling that will be singled out by Classify according to specification size;
It frames up: selecting plastic crate shipment, be laid with one layer of waterweed moisturizing damping in plastic crate bottom and surface, shrimp seedling fills basket Timely water drenching entrucking transport afterwards;
Entrucking: first by car ventilation 30min before entrucking, the plastics of an emptying are placed in car bottom and top when entrucking Basket, and ice cube is piled inside plastic crate;
3) it transports
It is transported using dry method constant temperature, temperature maintains 20 DEG C or so in compartment when transport, in entire shrimp seedling transportational process, Every 3-4 hours, ventilation of opening the door was primary, and the spray water into compartment in time, selection night transport as far as possible;
4) processing before seedling is put in pond
Shrimp seedling will clean up the pond to the new pool before putting the pool, except wild, kind grass and regulating water quality, survive and be expanded to pond water plant 0.5m2And water body planktonic organism it is abundant after can put seedling, put before seedling two hours again to replenishing vitamins C and glucose in the pool, into The processing of row shrimp seedling resisting stress;
5) seed puts the pool
It puts seedling selection of time to complete in fine day morning 8-10 point, selects one block of plastic film to be laid in pond side and extend to water Body on a plastic film by shrimp seedling allows shrimp seedling voluntarily to crawl into pond along film.
Wherein, cage is got rid of described in step 1) and long cage selects soft plastic optical fibre and mesh aperture is 18- 25mm。
Wherein, the specific setting of cage is got rid of described in step 1) are as follows: follow closely one every 10m enclosing ditch bank and the inner edge Nei Geng A timber is suspended on timber cage halter is got rid of, and halter will be higher by water surface 35-40cm.
Wherein, the long specific setting of cage described in step 1) are as follows: a timber is followed closely every 10m among ditch enclosing, The halter on long cage both sides is suspended on respectively on two timbers, every 10m sets a cage, and halter will be higher by water surface 40-45cm.
Wherein, selected shrimp seedling specification is 80-100 tail/jin in step 2).
Wherein, plastic crate specification described in step 2) is 40cm*60cm*20cm, every basket of contained shrimp seedling weight is no more than 15 Jin.
Wherein, resisting stress described in step 4) processing method particularly includes: vitamin C and glucose powder be watered be made it is dense Degree is the mixed solution of 200mg/L, and presses every 1m2The amount of pool surface 0.3mL solution carries out full pool spilling head.
The beneficial effects of the present invention are: capture rate, different size shrimp seedling can be improved by getting rid of cage and the joint trapping of long cage Packing can reduce shrimp seedling damage rate, effectively maintain suitable temperature in shrimp seedling local environment in transportational process, humidity and oxygen-containing Amount puts and is cleaned up the pond the new pool before seedling, except wild, kind grass and regulating water quality, and to replenishing vitamins C and glucose in the pool, enhancing Anti-stress ability and adaptability of the shrimp seedling to the new pool.The transportational process introduced through the invention so that cray seed at Motility rate can reach 90% or more, produce significant economic effect.
Specific embodiment
The present invention is described in detail With reference to embodiment.
The method that the present invention improves cray weed survival rate, is carried out using following steps:
1. fishing for young shrimps
Select to be made of soft plastic optical fibre and mesh aperture for 18-25mm get rid of cage and long cage is combined and is caught Seedling encloses ditch bank and the inner edge Nei Geng with cage is got rid of, follows closely a timber every 10m, be suspended on timber cage halter is got rid of, and halter wants high Water surface 35-40cm out;Long cage among rice field follows closely a timber every 10m, the halter on long cage both sides is suspended on respectively On two timbers, every 10m sets a long cage, and halter will be higher by water surface 40-45cm, at dusk lower cage, Yu Ci morning 3-4 point Cage is received, shrimp seedling is taken out, is placed in seedling basket, is quickly transported to bank, fine warm gentle breeze weather is selected to catch seedling.
2. shrimp seedling dispenses
Select that neat specification, appendage are complete, shell cyan is light, great-hearted shrimp seedling, shrimp seedling specification is 80-100 tail/jin, will After the shrimp seedling picked out is classified according to specification size, the plastic crate that specification is 40cm*60cm*20cm is selected to ship, every basket Contained shrimp seedling weight is no more than 15 jin, is laid with one layer of waterweed moisturizing damping in plastic crate bottom and surface, sprays after shrimp seedling dress basket Spill the water in appropriate pond, and the transport of entrucking in time, first by car ventilation 30min before entrucking, car bottom and top are equal when entrucking The plastic crate of an emptying is placed, and piles ice cube inside plastic crate.
3. transport
It is transported using dry method constant temperature, air-conditioning in compartment is opened when transport, so that temperature is maintained 20 DEG C or so, temperature difference control exists Within 3 DEG C, in entire shrimp seedling transportational process, into compartment a small amount of water was sprayed every 3-4 hours to guarantee humidity in compartment, it can It with the tap water of the upper gas station of high speed, is sprayed using the spray head of atomization, selection night transport as far as possible.
4. the processing before seedling is put in pond
Shrimp seedling will clean up the pond to the new pool before putting the pool, except wild, kind grass and regulating water quality, survive and be expanded to pond water plant 0.5m2And water body planktonic organism it is abundant after can put seedling, put before seedling two hours again to splashing by vitamin C and powdered glucose in the pool Last (weight ratio 1:1) is watered the mixed solution that manufactured concentration is 200mg/L, and presses every 1m2The amount of pool surface 0.3mL solution carries out Full pool spilling head.
5. seed puts the pool
Select one block of plastic film to be laid in pond side and extend to water body, on a plastic film by shrimp seedling, allow shrimp seedling from Row crawls into pond along film, puts seedling selection of time and completes in fine day morning 8-10 point.
It using cray seed transportation resources of the invention, counts by amount transport, is carried out using the method for the present invention Survival rate of the transportation range after the shrimp seedling within 2000 kilometers puts seedling can reach 90% or more, and transportation range is more than 2000 kilometers Shrimp seedling put the survival rate after seedling and can reach 85% or more, higher than 40 percentage points of shrimp seedling survival rate under conventional method.Therefore, The method of the present invention can increase substantially cray weed survival rate, reduce shrimp seedling cost, increase economic benefit.
The above is only not to do limit in any form to the present invention to better embodiment of the invention System, any simple modification that embodiment of above is made according to the technical essence of the invention, equivalent variations and modification, Belong in the range of technical solution of the present invention.

Claims (7)

1. a method of improve cray weed survival rate, which comprises the steps of:
1) fishing for young shrimps
Selection 3-4 month fine warm gentle breeze weather catches seedling, gets rid of cage and long cage joint is traped, and the pond bank Wei Gou and the inner edge Nei Geng are with getting rid of Cage, the long cage in rice field centre, lower cage, Yu Ci morning 3-4 check and accept cage, shrimp seedling are taken out, be placed in seedling basket at dusk, fastly Speed is transported to bank;
2) shrimp seedling dispenses
Shrimp seedling sorting: select that neat specification, appendage are complete, shell cyan is light, great-hearted shrimp seedling, the shrimp seedling that will be singled out is according to rule Lattice size is classified;
It frames up: selecting plastic crate shipment, one layer of waterweed moisturizing damping is laid in plastic crate bottom and surface, after shrimp seedling fills basket Timely water drenching entrucking transport;
Entrucking: first by car ventilation 30min before entrucking, the plastic crate of an emptying is placed at car bottom and top when entrucking, and Ice cube is piled inside plastic crate;
3) it transports
It is transported using dry method constant temperature, temperature maintains 20 DEG C or so in compartment when transport, and the temperature difference controls within 3 DEG C, entire In shrimp seedling transportational process, and into compartment spray water primary every the ventilation of enabling in 3-4 hours, selection night transport as far as possible;
4) processing before seedling is put in pond
Shrimp seedling will clean up the pond to the new pool before putting the pool, except wild, kind grass and regulating water quality, survive to pond water plant and be expanded to 0.5m2 And water body planktonic organism it is abundant after can put seedling, put before seedling two hours again to replenishing vitamins C and glucose in the pool, carry out shrimp seedling Resisting stress processing;
5) seed puts the pool
It puts seedling selection of time to complete in fine day morning 8-10 point, selects one block of plastic film to be laid in pond side and extend to water body, On a plastic film by shrimp seedling, shrimp seedling is allowed voluntarily to crawl into pond along film.
2. improving the method for cray weed survival rate according to claim 1, it is characterised in that: described to get rid of in step 1) Cage and long cage are made of soft plastic optical fibre and mesh aperture is 18-25mm.
3. improving the method for cray weed survival rate according to claim 1, it is characterised in that: described to get rid of in step 1) The specific setting of cage are as follows: follow closely a timber every 10m on the pond bank Wei Gou and the inner edge Nei Geng, be suspended on cage halter is got rid of On timber, halter will be higher by water surface 35-40cm.
4. improving the method for cray weed survival rate according to claim 1, it is characterised in that: in step 1), the length The specific setting of cage are as follows: follow closely a timber every 10m among rice field, the halter on long cage both sides is suspended on respectively On two timbers, every 10m sets a long cage, and halter will be higher by water surface 40-45cm.
5. improving the method for cray weed survival rate according to claim 1, it is characterised in that: in step 2), selected shrimp Seedling specification is 80-100 tail/jin.
6. improving the method for cray weed survival rate according to claim 1, it is characterised in that: in step 2), the modeling Charging basket specification is 40cm*60cm*20cm, and every basket of contained shrimp seedling weight is no more than 15 jin.
7. improving the method for cray weed survival rate according to claim 1, it is characterised in that: described anti-in step 4) It stress handle method particularly includes: vitamin C and glucose powder are watered the mixed solution that concentration is made as 200mg/L, and press Every 1m2The amount of pool surface 0.3mL solution carries out full pool spilling head.
CN201910261267.9A 2019-04-02 2019-04-02 A method of improving cray weed survival rate Pending CN109832219A (en)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101385446A (en) * 2008-10-29 2009-03-18 彭刚 Freshwater crayfish offspring high-density transportation technique
CN102986564A (en) * 2012-10-12 2013-03-27 淮安正昌饲料有限公司 Cement pit breeding method of langoustine
CN103918589A (en) * 2014-04-24 2014-07-16 厦门兴牧威动物保健品有限公司 Animal health product capable of improving survival rate of shrimp fry in long distance transportation
CN104206340A (en) * 2014-10-10 2014-12-17 常德家华水产科技有限公司 Conveying method of white shrimp fresh water desalination young shrimps
CN105994070A (en) * 2016-06-22 2016-10-12 上海市水产研究所 Out-of-water transport method and device for red crayfish
CN109105323A (en) * 2018-09-14 2019-01-01 安徽省农业科学院水产研究所 A method of improving cray seed transportation survival rate

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101385446A (en) * 2008-10-29 2009-03-18 彭刚 Freshwater crayfish offspring high-density transportation technique
CN102986564A (en) * 2012-10-12 2013-03-27 淮安正昌饲料有限公司 Cement pit breeding method of langoustine
CN103918589A (en) * 2014-04-24 2014-07-16 厦门兴牧威动物保健品有限公司 Animal health product capable of improving survival rate of shrimp fry in long distance transportation
CN104206340A (en) * 2014-10-10 2014-12-17 常德家华水产科技有限公司 Conveying method of white shrimp fresh water desalination young shrimps
CN105994070A (en) * 2016-06-22 2016-10-12 上海市水产研究所 Out-of-water transport method and device for red crayfish
CN109105323A (en) * 2018-09-14 2019-01-01 安徽省农业科学院水产研究所 A method of improving cray seed transportation survival rate

Non-Patent Citations (5)

* Cited by examiner, † Cited by third party
Title
台州市农学会,台州市农业科学研究院: "《"台州农业农作制度创新(浙江省农技推广基金会台州执行部专辑9)》", 31 March 2011 *
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Application publication date: 20190604