CN107751050A - A kind of long Qi Wen Minnow seed mass breeding methods - Google Patents

A kind of long Qi Wen Minnow seed mass breeding methods Download PDF

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CN107751050A
CN107751050A CN201711027607.9A CN201711027607A CN107751050A CN 107751050 A CN107751050 A CN 107751050A CN 201711027607 A CN201711027607 A CN 201711027607A CN 107751050 A CN107751050 A CN 107751050A
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pond
days
fry
water
long
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CN107751050B (en
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曲焕韬
刘勇
吴川
鲁雪报
胡美洪
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Chinese Sturgeon Research Institute of China Three Gorges Corp
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Chinese Sturgeon Research Institute of China Three Gorges Corp
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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
    • A01K61/10—Culture of aquatic animals of fish
    • 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
    • A01K61/10—Culture of aquatic animals of fish
    • A01K61/13—Prevention or treatment of fish diseases
    • 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 present invention relates to a kind of long Qi Wen Minnow seed mass breeding methods, belong to rare Endemic fish seed cultural technique field, and this method includes following 3 basic steps：1）Hydrostatic is temporarily supported；2）Micro- aeration is cultivated；3）Outdoor eco-pond is cultivated.Offspring seed cultivation method provided by the invention is fully to study long Qi Wen Minnow larval and juvenile fish different phase development characteristicses and to pathogenic microorganism（Small melonworm）On the basis of sensitivity differences, indoor seed rearing and outdoor eco-pond are cultivated and effectively combined, precisely selection proper moment carries out training seedling pattern switching, not only effectively solve the problems, such as that early stage seed resistance is poor, the risk of the fry massive mortality caused by ich breaks out can be effectively reduced simultaneously, weed survival rate level and production scale are significantly improved, Minnow seed rearings can be kissed for long fin technical support be provided.

Description

A kind of long Qi Wen Minnow seed mass breeding methods
Technical field
The present invention relates to a kind of fingerling cultivating method, especially a kind of long Qi Wen Minnow seed rearing sides of rare Endemic fish Method.
Background technology
Long Qi Wen Minnow（Rhinogobio ventralis Sauvage et Dabry ）, belong to Cypriniformes （CyPriniforme）, Cyprinidae（CyPrinidae）, Minnow subfamilies（Gobioninae）, Wen Minnow belong to（Rhinogobio Bleeker）, foreign fish, native mouse are commonly called as, is that there is Upper Yangtze River the bottom of typical representative to dwell type Endemic fish.But in recent years Due to reasons such as overfishing, water pollution and hydraulic engineering constructions, long Qi Wen Minnow stock numbers drastically decline.To promote Jinsha River downstream stage hydroelectric development and ecological environmental protection develop in harmony, the rare spy of China Three Gorges Corporation's auxiliary construction There is fish multiplication pouring station to organize basin original inhabitants' Endemic fish species conservation work, study and prove through expert, will Long Qi Wen Minnow, which are included, lays special stress on protecting fish scope, it is desirable to which the annual artificial fecundation for carrying out certain scale releases activity.
Still immature yet with long Qi Wen Minnow artificial propagation techniques, especially seed rearing link fry stress reaction is strong A series of technical barriers such as strong, ich takes place frequently and oxygen demand is larger seriously constrain the group of scale enhancement releasing work Knit implementation.In consideration of it, currently need badly according to long Qi Wen Minnow larvae juvenile fishes growth and development characteristicses, physio-ecology characterristics and main Disease tolerance characteristics, a kind of healthy aquaculture pattern suitable for torrent fish fry large-scale cultivation is researched and developed, realized Long Qi Wen Minnow seed rearings production, promotes the work of Upper Yangtze River Endemic fish species conservation to carry out in a deep going way comprehensively.
The content of the invention
The invention provides a kind of long Qi Wen Minnow mass breeding methods, can solve long Qi Wen Minnow larvae juvenile fishes and cultivate Stress reaction is strong in journey, ich takes place frequently and a series of technical barriers such as oxygen demand is larger.This method is by indoor seed Cultivate to cultivate with outdoor eco-pond and be combined, ich sensitivity differences, precisely selection are closed according to different phase fry Suitable opportunity train seedling pattern switching and be connected, and makes full use of the Eco-environmental Characteristics constructed by different training seedling patterns effectively to drop Low ich breaks out risk；In addition, this method is rebuild using habitat habitat and dissolved oxygen slowly-releasing regulation and control technology is raw in outdoor The small size pond habitat system of dynamic stability is constructed in state pond, is significantly reduced while sufficient agreeable to the taste biological feed is ensured The stress reaction of fry, meets the high oxygen consumption demand of long Qi Wen Minnow fries, while establish main parasitic worm during training seedling （Small melonworm）Early alarming and forecasting method, Minnow seed rearings can be kissed for long fin direct technical support is provided.
In order to solve the above technical problems, the technical solution adopted in the present invention is：A kind of long Qi Wen Minnow mass cultivation side Method, this method comprise the following steps：
Step 1）Hydrostatic is temporarily supported, and in totally-enclosed shading Turnover Box, incubator water level 30-40cm, is transferred to 2-4 age in days prelarvas, 2-4 Age in days prelarva breeding density is 20000-30000 tails/m2, cultivated at 18-20 DEG C of water temperature to 5 ages in days；
Step 2）Micro- aeration is cultivated, to step 1）Turnover Box in feed wheel animalcule, early, evening respectively feeds 1 time, and food density requires to protect 10-15/ml is held, micro- aeration oxygen replenishing is carried out using gas stone, keeps seedling water dissolved oxygen to reach more than 5mg/L, 5-15 ages in days Breeding density is adjusted to 8000-12000 tails/m2, cultivated at 18-20 DEG C of water temperature to 16 ages in days；
Step 3）Outdoor eco-pond is cultivated, and selects to be transferred to outdoor nursery during night 7-8 after prelarva indoor culture to 16 ages in days Pond, the interior planting aquatic plants in advance of nursery pond, builds the habitat that it is suitable that fry survives, while be used as parasite（Small melon Worm）The attachment base of part Life Stages can be monitored early warning to disease progress；Chlorella, wheel are inoculated with pond afterwards Worm, fry is mainly with biological feed within 40 ages in days（Wheel animalcule, cladocera and Copepods）To eat, and installation traps on fishpond side Lamp carries out fry fortification training, while the stage applies weekly 1 liquid oxygenation agent and carries out Dissolved Oxygen in Water regulation and control；Work as fish Seedling, which reaches, more than 30 ages in days to be started to carry out drawing in the net to take exercise using the trawlnet mode of driveing, and the trawlnet frequency is about the 1-2 times/moon；To 40 days Start to feed artifical compound feed after age postlarva, early, evening respectively feeds 1 time, when fry growth reaches 6-10cm, meets and releases specification It is required that when terminate.
16 described age in days prelarvas proceed by nursery pond fry habitat structure for 15-20 days before being transferred to outdoor nursery pond Build and cultivate work with water quality, nursery pond fills new water after comprehensive cleaning and sterilizing, and source water need to pass through 80 mesh sieve tulles and filter, nursery Pond initial water level 40cm, water-based plant is sunk by the collocation plantation of " circuit shape " general layout in pond, about 1 week left side after the completion of water plant planting Right inoculation chlorella, density requirements reach ten thousand cells of 30-50/ml, and morning next day starts to apply fertilizer, according to 1-2g/m3And 0.01g/ m3Dosage applies liquid fertilizer and activated bacillus respectively, and water body is in peak green after 7-8 days, microscopy chlorella density Reach 800,000 cells/more than ml, now inoculating rotifer, inoculum density reaches 0.1-0.5/ml, and about wheel animalcule is close after 2-3 days Spend and reach peak value, 2-3/ml.
Under 16 described age in days prelarva fries during pond selection of time night 7-8, carried out before lower pond with 1-2mg/L PVP-Is Sterilization, soaks 5-10min, and fry enters before pond according to 1g/m3Concentration full pool spilling head plant polyose, will when the temperature difference is less than 0.5 DEG C Fry pours into training seedling pond.
It is described trap lamp and carry out fry fortification training concrete scheme be：Daily night 8:00 unlatching traps lamp, treats Diminution traps light irradiation scope to 0.5-1.0m after fry starts cluster2, daily light-illuminating time 0.5-1.0h, by about 1 The inductive education in week, 23-25 age in days fries have basically formed conditioned reflex of ingesting, now the daily light-illuminating time can foreshorten to 15-20min。
Described Dissolved Oxygen in Water regulates and controls concrete scheme：By liquid oxygenation agent in special sustained release steel cylinder, steel cylinder Capacity is 1.5-2.0L, bottleneck be two layers can turn aluminum sheet structure, be uniformly distributed drip port thereon, aperture 0.2-0.5mm, two Drip port registration can adjust drip speed on layer aluminium flake.Whole steel bottle mouth is fixed on turbine type aerator floating drum down, Aerator is started by micro computer control switch timing controlled, daily operation 4-5 times, each run 15-20min, aerator fortune The aluminium flake for driving steel bottle mouth by sharp pounding during row rotates, and can dramatically increase oxygenation agent release flow, drip speed highest It can reach 100-200 g/h.
Described biological feed includes the one or more in wheel animalcule, cladocera, Copepods, and the bait of timing detection daily is close Degree, when agreeable to the taste bait is less than, 2/ml need to from biological feed pond, collection be supplemented in time, it is ensured that nursery pond biological feed is all the time Maintain 2/more than ml；40 age in days postlarvas start to feed artifical compound feed, and early, evening respectively feeds 1 time, and initial feeding rate is 0.2-0.5%, after taming 10-15 days, feeding rate can be improved to 1-2%.
Long Qi Wen Minnow mass offspring seed cultivation methods provided by the invention, profitable effect are as follows：
1st, the present invention is young with reference to long Qi Wen Minnow sons on the basis of the habitat characteristics of the different training seedling mode constructions of system further investigation Juvenile growth development characteristicses and different phase are to causal organism（Small melonworm）Sensitivity differences, precisely select proper moment carry out The indoor and switching of outdoor training seedling pattern, on the premise of ensuring that fry possesses relatively strong travelling and prey ability, effectively reduce Ich breaks out risk, significantly improves survival rate of fish fry level；
2nd, the present invention constructs the small size pond habitat system of dynamic stability with habitat habitat reconstruction technique in outdoor eco-pond System, simulates fry field habitat habitat, has built high-quality aquatic environment, significantly reduce fry under the conditions of artificial farming Stress reaction, ensure cultured fishes seed growth welfare；
3rd, novelty of the present invention have developed dissolved oxygen slowly-releasing regulation and control technology, and the technology is to make full use of mechanical device to stir water oxygenation While, it is aided with the sustained release oxygenation of chemicals drip, and realize that the two links by specific device, it can carry rapidly in a short time Rise fishpond dissolved oxygen levels and remain stable for a long time, meet the high oxygen consumption demand during fry rearing；
4th, main parasitic worm during present invention training seedling-growing method is by the use of heavy water-based plant as long Qi Wen Minnow seed rearings（Small melon Worm）The attachment base of part Life Stages, analyzed by mathematical model on the basis of microscopic observation, statistics, tentatively established Small melonworm Population Growth, the dynamic monitoring method for breeding trend, it is pre- that early warning can be provided for disease outburst during seed rearing Report；
5th, present invention training seedling-growing method employs light abductive approach in terms of outdoor eco-pond fry ingests bait domestication, fully Using fry and zooplankter phototaxis feature, the respondent behavior that long Qi Wen Minnow seeds ingest to light is cultivated, is established efficient Fry biological feed fortification pattern, abundant bait is provided for early stage fry, meets its nutritional need, significantly improves Fry growth speed.
Embodiment
Technical scheme is explained below by application example, but protection scope of the present invention is not by example Limitation.
Embodiment one
This method is crossed the rare Endemic fish enhancement releasing station of Burner zone in China Three Gorges Corporation's small stream Lip river and practiced, training Educate experiment seed from pouring station voluntarily hasten parturition breeding obtain, parent population used in breeding be through artificial domestication maturation wild fish, Concrete condition is as follows：
A kind of long Qi Wen Minnow seed mass breeding methods, this method are given birth to according to young, young, the young development sequential of long Qi Wen Minnow, physiology State feature and to causal organism（Small melonworm）Its whole seed rearing process is divided into 3 steps by sensitivity differences, respectively For：1）Hydrostatic is temporarily supported；2）Micro- aeration is cultivated；3）Outdoor eco-pond is cultivated.
Step 1）2-4 ages in days Early larval is cultivated, and training seedling facility is square Turnover Box, water carrying capacity about 0.07m3, incubator Water level 30-40cm, totally-enclosed shading cultivation mode is taken, fry is transferred to before incubator first to be disappeared with 1-2mg/L PVP-Is Poison processing, splashed natural plant polyose according to 2mg/L concentration in incubator（Sharp foreign brand " activation "）, breeding density is 28000 Tail/m2, 18-20 DEG C of water temperature is cultivated, it is early, middle and late daily to remove dead fry three times, supplement appropriate new water in time as needed.
Step 2）To 5-15 age in days late period larvae cultivations, seed rearing facility is still square Turnover Box for above-mentioned cultivation.It is first First, the dilute office reason of fry is carried out, breeding density is adjusted to 10000 tails/m2.5 age in days prelarva yolk bags exhaust substantially, start to feed Wheel animalcule, early, evening respectively feed 1 time, and food density requires to keep 12/ml；Micro- aeration oxygen replenishing is carried out using gas stone, keeps nursery water Body dissolved oxygen reaches more than 5mg/L；Dead fry is removed in time using siphon mode and supplements new water in right amount.
Step 3）Cultivate to 16 age in days late period prelarvas-Juvenile fish and carry out outdoor eco-pond cultivation after cultivating
A. it is outdoor oblong culturing pool to cultivate facility to prepare culture facility, area about 100m2, the depth of water reaches as high as 1.2m, Each nursery pond requires 2, outfit turbine type aerator, and Chi Ding builds the sunshade of stainless steel frame structure.
B. water quality, which is cultivated, proceeds by nursery pond fry habitat structure and water quality training for 15-20 days before pond under fry Work is educated, nursery pond fills new water after comprehensive cleaning and sterilizing, and source water need to pass through 80 mesh sieve tulles and filter, nursery pond initial water level 40cm.By the heavy water-based plant of " circuit shape " general layout collocation plantation in pond（Hornwort, p.malaianus, hornwort, p.malaianus With any than blending）, inoculation chlorella, density requirements reach 400,000 cells/ml in 1 week after the completion of water plant planting.Next day Start to apply fertilizer in the morning, according to 1-2g/m3And 0.01g/m3Dosage applies liquid fertilizer respectively（Sharp foreign brand " rich water peptide "）With through work The bacillus of change（Sharp foreign brand " three ring Vitality Sources "）, water body is in peak green after about 7-8 days, and microscopy chlorella density reaches To 800,000 cells/more than ml.Now inoculating rotifer, inoculum density reach 0.3/ml, and wheel animalcule density reaches peak value after 3 days, and 3 Individual/ml.
C. under fry under pond fish seedling during pond selection of time night 7-8, carried out disinfection, soaked with 2mg/L PVP-Is before lower pond Steep 10min.Fry enters before pond according to 1g/m3Concentration full pool spilling head plant polyose（Sharp foreign brand " activation "）, will during lower pond Progressively temperature adjustment, treat that the temperature difference is less than 0.5 DEG C and fry is poured slowly into training seedling pond.
D. under bait feeding fry behind pond in 20 days with biological feed in pond（Wheel animalcule, cladocera and Copepods, each thing The mass ratio of matter is 1:1:1）For food, the food density of timing detection daily, needed when agreeable to the taste bait is less than 2/ml in time from biology The collection of bait pond is supplemented, it is ensured that nursery pond biological feed maintains 2/more than ml all the time；40 age in days postlarvas start to feed Artifical compound feed（Rise rope brand micro-granulated feed）, early, late respectively to feed 1 time, initial feeding rate is 0.2-0.5%, is tamed 12 days Afterwards, feeding rate is improved to 1%.
E. light induction the age in days of fortification 40 in fry with biological feed（Wheel animalcule, cladocera, Copepods, each material Mass ratio is 1:1:1）For food, the stage makes full use of the phototaxis feature of fry and zooplankter, and on fishpond side, installation traps Lamp carries out fry fortification.Concrete scheme is as follows：Daily night 8:00 or so unlatching traps lamp, and zooplankter is in light area Interior a large amount of clusters, progressively reduced after fry starts cluster and trap light irradiation scope to 0.7m2, the daily light-illuminating time is about 0.5h, by the inductive education of 6 days, 23 age in days fries basically formed conditioned reflex of ingesting, now the daily light-illuminating time Foreshorten to 15min.
F. dissolved oxygen regulates and controls 30 age in days fry oxygen demand and dramatically increased, and the stage applies weekly 1 liquid oxygenation agent（Profit Foreign brand " oxygen speed is protected "）, carry out Dissolved Oxygen in Water regulation and control.Medicament administration uses release method, by liquid oxygenation agent（Sharp foreign brand " oxygen speed is protected "）In special sustained release steel cylinder, steel cylinder capacity is 1.5L, bottleneck be two layers can turn aluminum sheet structure, thereon It is uniformly distributed drip port, aperture 0.3mm, drip port registration can adjust drip speed on two layers of aluminium flake.Whole steel bottle mouth court Under be fixed on turbine type aerator floating drum, aerator is started by micro computer control switch timing controlled, daily operation 5 times, Each run 15min, the aluminium flake for driving steel bottle mouth by sharp pounding when aerator is run rotate, and can dramatically increase oxygenation agent Flow is discharged, drip speed can reach 160 g/h.
G. draw in the net take exercise for enhancing fry resistance, avoid fry flocked together for a long time in pond cluster outburst disease, work as fry Reach and more than 30 ages in days start to carry out drawing in the net to take exercise using the trawlnet mode of driveing, the trawlnet frequency is 1 time/month.
H. water quality management is weekly periodically to six culture pond ammonia nitrogen, nitrite nitrogen, total phosphorus, total nitrogen, pH and dissolved oxygen keys Property water quality index is detected, administration of probiotics as needed（Sharp foreign brand " sharp bacterium is more "）Or the new water of supplement carries out water quality tune Control.
I. culturing pool temperature should be controlled at 25 DEG C during temperature adjusting nursery, temperature adjustment measure mainly include supplementary source water and Sunshade lucifuge.
J. disease control should sample weekly and breeding water body is detected, and it is lively that detection content mainly includes water body Central Plains Thing forms and water quality index situation.When fry growth in total length is to more than 2cm, need to also be fished at random in fishpond surrounding weekly few Hornwort and p.malaianus are measured, selection blade-section, which is placed under microscope, to be seen whether to be attached with small melonworm trophozoite or bag Capsule, and the statistic record of adhesion amount is carried out, Life Stages and individual amount according to residing for parasite, in combination with nursery pond Crucial water quality index（Water temperature, dissolved oxygen and ammonia nitrogen etc.）Situation prejudges development trend of the small melonworm population in water body growth and breeding, And take corresponding prophylactico-therapeutic measures（As fry turn dilute point of pond, the fresh sweet wormwood of full pool spilling head or in up to brand " small melon enemy kill "）, i.e., Long Qi Wen Minnow seeds mass can be completed to cultivate.
Embodiment 2
Step 1）Hydrostatic is temporarily supported, and in totally-enclosed shading Turnover Box, incubator water level 40cm is transferred to 4 age in days prelarvas, and 4 ages in days are young Fish breeding density is 28000 tails/m2, cultivated at 20 DEG C of water temperature to 5 ages in days；
Step 2）Micro- aeration is cultivated, to step 1）Turnover Box in feed wheel animalcule, early, evening respectively feeds 1 time, and food density requires to protect 15/ml is held, micro- aeration oxygen replenishing is carried out using gas stone, keeps seedling water dissolved oxygen to reach more than 5mg/L, 15 age in days breedings are close Degree is adjusted to 10000 tails/m2, cultivated at 20 DEG C of water temperature to 16 ages in days；
Step 3）Outdoor eco-pond is cultivated, and selects to be transferred to outdoor nursery pond during night 8 after prelarva indoor culture to 16 ages in days, Planting aquatic plants, the suitable habitat of construction fry existence, while be used as parasite in advance in nursery pond（Small melonworm） The attachment base of part Life Stages can be monitored early warning to disease progress；Chlorella, wheel animalcule are inoculated with pond afterwards, Fry is mainly using wheel animalcule biological feed as food within 40 ages in days, and traps lamp in the installation of fishpond side and carry out fry fortification instruction Practice, while the stage applies weekly 1 liquid oxygenation agent and carries out Dissolved Oxygen in Water regulation and control；Start when fry reaches more than 30 ages in days Carry out drawing in the net to take exercise using the trawlnet mode of driveing, the trawlnet frequency is 1 time/month；Start to feed hand fit after to 40 age in days postlarvas Feed, early, evening respectively feed 1 time, when fry growth reaches 6-10cm, meet and terminate when releasing specification requirement.
16 described age in days prelarvas proceed by nursery pond fry habitat structure for 15-20 days before being transferred to outdoor nursery pond Build and cultivate work with water quality, nursery pond fills new water after comprehensive cleaning and sterilizing, and source water need to pass through 80 mesh sieve tulles and filter, nursery Pond initial water level 40cm, water-based plant is sunk by the collocation plantation of " circuit shape " general layout in pond, about 1 week left side after the completion of water plant planting Right inoculation chlorella, density requirements reach 450,000 cells/ml, and morning next day starts to apply fertilizer, according to 1.5g/m3And 0.01g/m3With Amount applies liquid fertilizer and activated bacillus respectively, and water body is in peak green after 7-8 days, and microscopy chlorella density reaches 800000 cells/more than ml, now inoculating rotifer, inoculum density reach 0.35/ml, wheel animalcule density reaches peak about after 2-3 days Value, 3/ml.
Under 16 described age in days prelarva fries during pond selection of time night 7-8, disappeared before lower pond with 2mg/L PVP-Is Poison, soaks 5-10min, and fry enters before pond according to 1g/m3Concentration full pool spilling head plant polyose, by fish when the temperature difference is less than 0.5 DEG C Seedling pours into training seedling pond.
It is described trap lamp and carry out fry fortification training concrete scheme be：Daily night 8:00 unlatching traps lamp, treats Diminution traps light irradiation scope to 0.8m after fry starts cluster2, daily light-illuminating time 1.0h, by the induction of about 1 week Training, 23-25 age in days fries have basically formed conditioned reflex of ingesting, now the daily light-illuminating time can foreshorten to 18min.
Described Dissolved Oxygen in Water regulates and controls concrete scheme：By liquid oxygenation agent in special sustained release steel cylinder, steel cylinder Capacity is 2.0L, bottleneck be two layers can turn aluminum sheet structure, be uniformly distributed drip port thereon, aperture 0.2mm, on two layers of aluminium flake Drip port registration can adjust drip speed.Whole steel bottle mouth is fixed on turbine type aerator floating drum down, and aerator leads to The startup of micro computer control switch timing controlled is crossed, daily operation 4-5 times, each run 15-20min, aerator passes through when running Sharp pounding drives the aluminium flake rotation of steel bottle mouth, can dramatically increase oxygenation agent release flow, and drip speed can reach 100-200 g/h。
Described biological feed includes wheel animalcule, daily timing detection food density, when agreeable to the taste bait be less than 2/ml need and When from biological feed pond collection supplemented, it is ensured that nursery pond biological feed maintains 2/more than ml all the time；40 age in days postlarvas Start to feed artifical compound feed, early, evening respectively feeds 1 time, and initial feeding rate is 0.35%, can be by bait throwing in after taming 10-15 days Rate is improved to 2%, you can is completed long Qi Wen Minnow seeds mass and is cultivated.

Claims (8)

1. a kind of long Qi Wen Minnow seed mass breeding methods, it is characterised in that including following 3 steps, be respectively：1）Hydrostatic Temporarily support；2）Micro- aeration is cultivated；3）Outdoor eco-pond is cultivated,
Step 1）Hydrostatic is temporarily supported, and in totally-enclosed shading Turnover Box, incubator water level 30-40cm, is transferred to 2-4 age in days prelarvas, Cultivated at 18-20 DEG C of water temperature to 5 ages in days；
Step 2）Micro- aeration is cultivated, to step 1）Turnover Box in feed wheel animalcule, early, evening respectively feeds 1 time, and food density requires to protect 10-15/ml is held, micro- aeration oxygen replenishing is carried out using gas stone, keeps seedling water dissolved oxygen to reach more than 5mg/L, in water temperature 18- Cultivated at 20 DEG C to 16 ages in days；
Step 3）Outdoor eco-pond is cultivated, and after prelarva indoor culture to 16 ages in days, night is transferred to outdoor nursery pond, then in nursery Chlorella, wheel animalcule are inoculated with pond, under fry behind pond in 40 days using biological feed in pond for food, and install on fishpond side and to trap lamp and enter The fortification of row fry is trained, while the stage applies weekly 1-2 liquid oxygenation agent and carries out Dissolved Oxygen in Water regulation and control；Work as fry Reach and more than 30 ages in days start to carry out drawing in the net to take exercise using the trawlnet mode of driveing, the trawlnet frequency is the 1-2 times/moon；It is young to 40 ages in days Start to feed artifical compound feed after fish, early, evening respectively feeds 1 time, when fry growth reaches 6-10cm, meets and releases specification requirement When terminate.
2. the long Qi Wen Minnow seed mass breeding methods described in claim 1, it is characterised in that during hydrostatic is temporarily supported, 2-4 ages in days Prelarva breeding density is 20000-30000 tails/m2。
3. the long Qi Wen Minnow seed mass breeding methods described in claim 1, it is characterised in that during micro- aeration is cultivated, 5-15 Age in days breeding density is adjusted to 8000-12000 tails/m2。
4. the long Qi Wen Minnow seed mass breeding methods described in claim 1, it is characterised in that 16 age in days prelarvas are transferred to outdoor Proceed by within 15-20 days before nursery pond nursery pond fry habitat habitat structure and water quality cultivates work, nursery pond is through comprehensively clear New water is filled after wash disinfection, source water need to pass through 80 mesh sieve tulles and filter, nursery pond initial water level 40cm, and circuit shape general layout is pressed in pond Water-based plant is sunk in collocation plantation, is inoculated with chlorella after the completion of water plant planting in 1 week, density requirements reach the cells of 30-50 ten thousand/ Ml, morning next day starts to apply fertilizer, according to 1-2g/m3And 0.01g/m3Dosage applies liquid fertilizer and activated gemma bar respectively Bacterium, water body is in peak green after 7-8 days, and microscopy chlorella density reaches 800,000 cells/more than ml, and now inoculating rotifer, connects Kind of density reaches 0.1-0.5/ml, and wheel animalcule density reaches peak value after 2-3 days, 2-3/ml.
5. the long Qi Wen Minnow seed mass breeding methods described in claim 1, it is characterised in that pond under 16 age in days prelarva fries During selection of time night 7-8, carried out disinfection before lower pond with 1-2mg/L PVP-Is, soak 5-10min, fry enter before pond according to 1g/m3Concentration full pool spilling head plant polyose, fry is poured into training seedling pond when the temperature difference is less than 0.5 DEG C.
6. the long Qi Wen Minnow seed mass breeding methods described in claim 1, it is characterised in that trap lamp and carry out fry nutrition Intensive training concrete scheme is：Daily night 8:00 unlatching traps lamp, reduces trapping light irradiation scope after fry starts cluster To 0.5-1.0m2, daily light-illuminating time 0.5-1.0h, by the inductive education of 1 week, 23-25 ages in days fry fundamental form Into conditioned reflex of ingesting, now the daily light-illuminating time can foreshorten to 15-20min.
7. the long Qi Wen Minnow seed mass breeding methods described in claim 1, it is characterised in that Dissolved Oxygen in Water regulation and control are specific Scheme is：By liquid oxygenation agent mounted in sustained release steel cylinder in, bottleneck be two layers can turn aluminum sheet structure, be uniformly distributed drip thereon Hole, aperture 0.2-0.5mm, whole steel bottle mouth are fixed on turbine type aerator floating drum down, daily operation 4-5 times, every time 15-20min is run, drip speed can reach 100-200 g/h.
8. the long Qi Wen Minnow seed mass breeding methods described in claim 1, it is characterised in that described biological feed includes One or more in wheel animalcule, cladocera, Copepods, the food density of timing detection daily, when agreeable to the taste bait needs less than 2/ml From biological feed pond, collection is supplemented in time, it is ensured that nursery pond biological feed maintains 2/more than ml all the time；40 ages in days are young Fish starts to feed artifical compound feed, and morning, evening respectively feed 1 time, and initial feeding rate is 0.2-0.5%, after taming 10-15 days, can incite somebody to action Feeding rate is improved to 1-2%.
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