CN106172119A - Grass goldfish breeding and the method for selection-breeding - Google Patents
Grass goldfish breeding and the method for selection-breeding Download PDFInfo
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- CN106172119A CN106172119A CN201610556308.3A CN201610556308A CN106172119A CN 106172119 A CN106172119 A CN 106172119A CN 201610556308 A CN201610556308 A CN 201610556308A CN 106172119 A CN106172119 A CN 106172119A
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- 241000252229 Carassius auratus Species 0.000 title claims abstract description 62
- 238000009395 breeding Methods 0.000 title claims abstract description 29
- 244000025254 Cannabis sativa Species 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title claims abstract description 16
- 230000001488 breeding effect Effects 0.000 title claims abstract description 15
- 238000012216 screening Methods 0.000 claims abstract description 11
- 230000009027 insemination Effects 0.000 claims abstract description 7
- 238000011534 incubation Methods 0.000 claims abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 61
- 241000251468 Actinopterygii Species 0.000 claims description 36
- 230000012447 hatching Effects 0.000 claims description 21
- 102000002322 Egg Proteins Human genes 0.000 claims description 18
- 108010000912 Egg Proteins Proteins 0.000 claims description 18
- 244000152045 Themeda triandra Species 0.000 claims description 12
- 230000003187 abdominal effect Effects 0.000 claims description 12
- 210000002969 egg yolk Anatomy 0.000 claims description 12
- 235000013345 egg yolk Nutrition 0.000 claims description 12
- 229910000831 Steel Inorganic materials 0.000 claims description 11
- 239000010959 steel Substances 0.000 claims description 11
- 241001247197 Cephalocarida Species 0.000 claims description 10
- 241000209046 Pennisetum Species 0.000 claims description 10
- 241000700141 Rotifera Species 0.000 claims description 9
- XNOPRXBHLZRZKH-UHFFFAOYSA-N Oxytocin Natural products N1C(=O)C(N)CSSCC(C(=O)N2C(CCC2)C(=O)NC(CC(C)C)C(=O)NCC(N)=O)NC(=O)C(CC(N)=O)NC(=O)C(CCC(N)=O)NC(=O)C(C(C)CC)NC(=O)C1CC1=CC=C(O)C=C1 XNOPRXBHLZRZKH-UHFFFAOYSA-N 0.000 claims description 8
- 101800000989 Oxytocin Proteins 0.000 claims description 8
- 102100031951 Oxytocin-neurophysin 1 Human genes 0.000 claims description 8
- 230000026109 gonad development Effects 0.000 claims description 8
- XNOPRXBHLZRZKH-DSZYJQQASA-N oxytocin Chemical compound C([C@H]1C(=O)N[C@H](C(N[C@@H](CCC(N)=O)C(=O)N[C@@H](CC(N)=O)C(=O)N[C@@H](CSSC[C@H](N)C(=O)N1)C(=O)N1[C@@H](CCC1)C(=O)N[C@@H](CC(C)C)C(=O)NCC(N)=O)=O)[C@@H](C)CC)C1=CC=C(O)C=C1 XNOPRXBHLZRZKH-DSZYJQQASA-N 0.000 claims description 8
- 229960001723 oxytocin Drugs 0.000 claims description 8
- 240000002299 Symphytum officinale Species 0.000 claims description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 6
- 230000003203 everyday effect Effects 0.000 claims description 6
- 238000011049 filling Methods 0.000 claims description 6
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- 238000002347 injection Methods 0.000 claims description 6
- 239000007924 injection Substances 0.000 claims description 6
- 239000012528 membrane Substances 0.000 claims description 6
- 210000004681 ovum Anatomy 0.000 claims description 6
- 229910052760 oxygen Inorganic materials 0.000 claims description 6
- 239000001301 oxygen Substances 0.000 claims description 6
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- RBTBFTRPCNLSDE-UHFFFAOYSA-N 3,7-bis(dimethylamino)phenothiazin-5-ium Chemical compound C1=CC(N(C)C)=CC2=[S+]C3=CC(N(C)C)=CC=C3N=C21 RBTBFTRPCNLSDE-UHFFFAOYSA-N 0.000 claims description 4
- 230000018109 developmental process Effects 0.000 claims description 4
- 229960000907 methylthioninium chloride Drugs 0.000 claims description 4
- 230000032696 parturition Effects 0.000 claims description 4
- 241001064683 Cladoceras Species 0.000 claims description 3
- 241000252233 Cyprinus carpio Species 0.000 claims description 3
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 3
- 239000004677 Nylon Substances 0.000 claims description 3
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 3
- 210000005252 bulbus oculi Anatomy 0.000 claims description 3
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- 150000001875 compounds Chemical class 0.000 claims description 3
- 235000013305 food Nutrition 0.000 claims description 3
- 210000004602 germ cell Anatomy 0.000 claims description 3
- 230000000366 juvenile effect Effects 0.000 claims description 3
- 229920001778 nylon Polymers 0.000 claims description 3
- 230000016087 ovulation Effects 0.000 claims description 3
- 210000000006 pectoral fin Anatomy 0.000 claims description 3
- 210000000582 semen Anatomy 0.000 claims description 3
- 239000002904 solvent Substances 0.000 claims description 3
- 230000006641 stabilisation Effects 0.000 claims description 3
- 238000011105 stabilization Methods 0.000 claims description 3
- 210000003813 thumb Anatomy 0.000 claims description 3
- 210000001835 viscera Anatomy 0.000 claims description 3
- 230000003442 weekly effect Effects 0.000 claims description 3
- 241001520921 Leersia virginica Species 0.000 claims description 2
- 150000001336 alkenes Chemical class 0.000 claims 1
- 210000002149 gonad Anatomy 0.000 claims 1
- 239000007788 liquid Substances 0.000 claims 1
- VIKNJXKGJWUCNN-XGXHKTLJSA-N norethisterone Chemical compound O=C1CC[C@@H]2[C@H]3CC[C@](C)([C@](CC4)(O)C#C)[C@@H]4[C@@H]3CCC2=C1 VIKNJXKGJWUCNN-XGXHKTLJSA-N 0.000 claims 1
- 230000000630 rising effect Effects 0.000 claims 1
- 238000002791 soaking Methods 0.000 claims 1
- 238000000746 purification Methods 0.000 abstract description 2
- 244000283207 Indigofera tinctoria Species 0.000 description 2
- 241001465754 Metazoa Species 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 2
- 125000000325 methylidene group Chemical group [H]C([H])=* 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 206010002660 Anoxia Diseases 0.000 description 1
- 241000976983 Anoxia Species 0.000 description 1
- 241000246211 Carassius auratus red var. Species 0.000 description 1
- 241000511340 Carassius cuvieri Species 0.000 description 1
- 240000006541 Dactyloctenium aegyptium Species 0.000 description 1
- 206010021143 Hypoxia Diseases 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
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Classifications
-
- 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
-
- 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
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- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Marine Sciences & Fisheries (AREA)
- Zoology (AREA)
- Animal Husbandry (AREA)
- Biodiversity & Conservation Biology (AREA)
- Farming Of Fish And Shellfish (AREA)
Abstract
The present invention is grass goldfish breeding and the method for selection-breeding, comprises the steps: 1 parent culture；2 artificial induced spawnings；3 artificial inseminations；4 artificial incubation；5 larvae cultivation；6 seed screenings.Grass goldfish of the present invention breeding and the method for selection-breeding, can be different for the type of required grass goldfish, and character required when viewing and admiring is different, breeds targetedly and selection-breeding, and the character of the grass goldfish obtained is excellent, and purification degrees is high.
Description
Technical field
The present invention relates to Carassius auratus and breed field, particularly relate to grass goldfish breeding and the method for selection-breeding.
Background technology
Grass goldfish i.e. grass seeds Carassius auratus, is Carassius auratus literary composition, egg, dragon, grass one of four big classes, and it still retains Carassius auratus build, but body colour
Variation occurs, common body colour be the reddest and red in vain, the reddest grass goldfish and red Pennisetum centrasiaticum Tzvel Carassius auratus, be commonly called as red crucian carp and red white crucian carp.Closely
It is individual that year selects again black, referred to as blackwort symphytum Carassius auratus, and grass goldfish vitality is strong, insensitive to change of water quality, it is not easy to anoxia,
Adaptive temperature 1-38 DEG C, easily raises, so deeply being welcome by Shui nationality market, is most popular pet fish in outdoor landscape water body
Class.In order to keep grass goldfish preferably degree of viewing and admiring, need to carry out strict breeding and selection-breeding.
Summary of the invention
The present invention provides grass goldfish breeding and the method for selection-breeding, comprises the steps:
1 parent culture
Obtain red grass goldfish, just select red grass goldfish as parent；Obtain red Pennisetum centrasiaticum Tzvel Carassius auratus, just select red grass goldfish with red
Pennisetum centrasiaticum Tzvel Carassius auratus is as parent；Obtain blackwort symphytum Carassius auratus and choose ink dragon eyeball with black Cyprinus carpio L. as parent；
Parent culture was from autumn upper one year, by significantly healthy to the stabilization characteristics of genetics filtered out, varietal characteristic
Body point male and female are put in a suitable place to breed, alternately throw something and feed with natural live baits such as cladoceras with artifical compound feed；
Breeding density is: one age kind fish 15-20 tail/m2, two age kind fish 4-6 tail/m2；Produce in the previous moon, water filling one weekly
Secondary, to produce in the last week, water filling every other day once, stimulates gonad development with current；
2 artificial induced spawnings
Before and after mid-April, water temperature stability, when 20-22 DEG C, starts artificial induced spawning, first female male parent has been caught, checked
Gonad development situation, the parent that gonad development is good presses milter abdominal part light, has white seminal fluid to flow out, and light pressure raun abdominal part has ovum
Grain flows out；Carry raun caudal peduncle, hence it is evident that the profile of visible both sides descensus ovarii；Oxytocin is solvent with 0.65% normal saline,
Every milliliter contains 25 micrograms LRH-A and 500 units HCG, and every kilogram of raun 4 milliliters of oxytocin of injection, every kilogram of milter injects 2 milliliters
Oxytocin；Carrying out a shot at pectoral fin base portion, noting into the pin degree of depth 0.5 cm, in order to avoid stabbing internal organs；
3 artificial inseminations
Hasten parturition and parent fish put back to net cage or cement pit after injection, when 10 is little after time obvious chasing behavior occurs, drag for
Take parent fish and carry out artificial insemination under water；Being put into by fish nest and being filled with water in operation basin, right-hand man divides and holds each tail of male and female parent fish, in the water surface
Under, male and female cloacal aperture is relative, the ovulation of raun abdominal part is first extruded with thumb, extruding milter abdominal part row essence, is gently agitated for immediately
Water body so that it is be fully fertilized, and be uniformly attached on fish nest；
4 artificial incubation
Hatchery area is with 10-15m2Preferably, hatchery use water nylon silk cover filtering more than 100 mesh, it is strictly on guard against harmful animal
Biological entrance；Lentic hatching, water transparency 40-60 centimetre, dissolved oxygen is more than 50 mg/litre, depth of water 15-25 centimetre, puts ovum close
2000/m of degree2；If meeting consecutive low temperature, wet weather, germ cell infects fish molds, the methylene of 1 mg/litre of can splashing in hatching water
Base indigo plant solution is controlled；Such as torrential rain, reply pond hides, it is to avoid water quality, fluctuating temperature are crossed play and affected hatching
Rate；Hatching process keep water temperature the most critically important；Should sunshade in time with add water, it is to avoid water temperature is more than 30 DEG C；
5 larvae cultivation
Double as nursery pond with hatchery, when fry membrane, in pond, add zooplankton, after the flat trip of fry membrane, and
Time fish nest is removed in pond；After the flat trip of grass goldfish Seedling, in pond, the microzooplankton such as wheel animalcule is ingested in 1-2 days nearly at once
To the greatest extent；
Wheel animalcule is leached every day by initial 4-5 days domestic demands after fry puts down trip by the food organisms dragged for 60 mesh sieve thin,tough silk, will
It is thrown something and fed in pond, if this stage there is not wheel animalcule, egg yolk water of can splashing replaces, with every ten thousand tail fry 0.5-1 every day ripe egg yolk
Amount, wraps up ripe egg yolk with 60 mesh screen cloths, rubs and wash out vaporific uniform egg yolk water, splash along pond surrounding and throw something and feed in bucket water；One
It is thrown something and fed twice sooner or later；
5-10 days, throwing something and feeding based on the small-sized cladocera after filtering, this stage should keep have branch alive all the time daytime in pond
Angle class；
Throw something and feed after 10 days without the cladocera filtered；
The early natural live bait such as upslide cladocera after 20 days, throws mixed feed afternoon；
Keep nursery pond water colour during larvae cultivation preferably peak green；Water level gradually adds from 20 centimetres and is deep to 50 centimetres；
Keep dissolved oxygen sufficient；
6 seed screenings
The screening time of three kinds of grass goldfishes is different from method: the reddest and red white grass goldfish kind, hereditary character is relatively
Stable, almost without the individuality that tail fin is leafy in filial generation, body colour main development helps white, Quan Bai, steel gray four types red, red,
The most steel gray individual ratio, less than 1%, is eliminated the whitest individuality, is accounted for 5%-15%；Red grass goldfish turns with red Pennisetum centrasiaticum Tzvel Carassius auratus
Color is relatively slow, completes annesl, then select after hatching 60 days；If blackwort symphytum Carassius auratus parent backcrosses, number of times is few, then inheritance stability
Property poor, started to select for the first time from 20 days, eliminate that tail fin is leafy, fertile short, the individuality that body colour is steel gray of build, enter when hatching 50 days
Row second time is selected, and leaves black juvenile fish, eliminates the individuality of steel gray body colour, and classifies by Individual Size；After hatching 90 days
Carry out third time to classify, the individuality that superseded build is the best, and continue to press Individual Size classification cultivation.
Further, described fish nest uses polyethylene window screening, every 35cm2。
Further, after described fish nest soaks 1 minute in the methylene blue solution of 10 mg/litre, hatchery is then moved to
Interior hatching.
The invention has the beneficial effects as follows: grass goldfish of the present invention breeding and the method for selection-breeding, can be for required
The type of grass goldfish is different, and character required when viewing and admiring is different, breeds targetedly and selection-breeding, the grass goldfish obtained
Character is excellent, and purification degrees is high.
Detailed description of the invention
It is described in detail below with reference to embodiments of the invention.
Grass goldfish breeding and the method for selection-breeding, comprise the steps:
1 parent culture
Obtain red grass goldfish, just select red grass goldfish as parent；Obtain red Pennisetum centrasiaticum Tzvel Carassius auratus, just select red grass goldfish with red
Pennisetum centrasiaticum Tzvel Carassius auratus is as parent；Obtain blackwort symphytum Carassius auratus and choose ink dragon eyeball with black Cyprinus carpio L. as parent；
Parent culture was from autumn upper one year, by significantly healthy to the stabilization characteristics of genetics filtered out, varietal characteristic
Body point male and female are put in a suitable place to breed, alternately throw something and feed with natural live baits such as cladoceras with artifical compound feed；
Breeding density is: one age kind fish 15-20 tail/m2, two age kind fish 4-6 tail/m2；Produce in the previous moon, water filling one weekly
Secondary, to produce in the last week, water filling every other day once, stimulates gonad development with current；
2 artificial induced spawnings
Before and after mid-April, water temperature stability, when 20-22 DEG C, starts artificial induced spawning, first female male parent has been caught, checked
Gonad development situation, the parent that gonad development is good presses milter abdominal part light, has white seminal fluid to flow out, and light pressure raun abdominal part has ovum
Grain flows out；Carry raun caudal peduncle, hence it is evident that the profile of visible both sides descensus ovarii；Oxytocin is solvent with 0.65% normal saline,
Every milliliter contains 25 micrograms LRH-A and 500 units HCG, and every kilogram of raun 4 milliliters of oxytocin of injection, every kilogram of milter injects 2 milliliters
Oxytocin；Carrying out a shot at pectoral fin base portion, noting into the pin degree of depth 0.5 cm, in order to avoid stabbing internal organs；
3 artificial inseminations
Hasten parturition and parent fish put back to net cage or cement pit after injection, when 10 is little after time obvious chasing behavior occurs, drag for
Take parent fish and carry out artificial insemination under water；Being put into by fish nest and being filled with water in operation basin, right-hand man divides and holds each tail of male and female parent fish, in the water surface
Under, male and female cloacal aperture is relative, the ovulation of raun abdominal part is first extruded with thumb, extruding milter abdominal part row essence, is gently agitated for immediately
Water body so that it is be fully fertilized, and be uniformly attached on fish nest；
4 artificial incubation
Hatchery area is with 10-15m2Preferably, hatchery use water nylon silk cover filtering more than 100 mesh, it is strictly on guard against harmful animal
Biological entrance；Lentic hatching, water transparency 40-60 centimetre, dissolved oxygen is more than 50 mg/litre, depth of water 15-25 centimetre, puts ovum close
2000/m of degree2；If meeting consecutive low temperature, wet weather, germ cell infects fish molds, the methylene of 1 mg/litre of can splashing in hatching water
Base indigo plant solution is controlled；Such as torrential rain, reply pond hides, it is to avoid water quality, fluctuating temperature are crossed play and affected hatching
Rate；Hatching process keep water temperature the most critically important；Should sunshade in time with add water, it is to avoid water temperature is more than 30 DEG C；
5 larvae cultivation
Double as nursery pond with hatchery, when fry membrane, in pond, add zooplankton, after the flat trip of fry membrane, and
Time fish nest is removed in pond；After the flat trip of grass goldfish Seedling, in pond, the microzooplankton such as wheel animalcule is ingested in 1-2 days nearly at once
To the greatest extent；
Wheel animalcule is leached every day by initial 4-5 days domestic demands after fry puts down trip by the food organisms dragged for 60 mesh sieve thin,tough silk, will
It is thrown something and fed in pond, if this stage there is not wheel animalcule, egg yolk water of can splashing replaces, with every ten thousand tail fry 0.5-1 every day ripe egg yolk
Amount, wraps up ripe egg yolk with 60 mesh screen cloths, rubs and wash out vaporific uniform egg yolk water, splash along pond surrounding and throw something and feed in bucket water；One
It is thrown something and fed twice sooner or later；
5-10 days, throwing something and feeding based on the small-sized cladocera after filtering, this stage should keep have branch alive all the time daytime in pond
Angle class；
Throw something and feed after 10 days without the cladocera filtered；
The early natural live bait such as upslide cladocera after 20 days, throws mixed feed afternoon；
Keep nursery pond water colour during larvae cultivation preferably peak green；Water level gradually adds from 20 centimetres and is deep to 50 centimetres；
Keep dissolved oxygen sufficient；
6 seed screenings
The screening time of three kinds of grass goldfishes is different from method:
The annesl of red grass goldfish and red Pennisetum centrasiaticum Tzvel Carassius auratus is relatively slow, body colour main development help white, Quan Bai red, red, steel gray four kinds
Type, the most steel gray individual ratio, less than 1%, completes annesl after hatching 60 days, then carries out selecting red hundred that body colour is bright-coloured
Grass goldfish；Eliminate the whitest individuality, account for 5%-15%；
Blackwort symphytum Carassius auratus started to select for the first time from 20 days, eliminated that tail fin is leafy, fertile short, the individuality that body colour is steel gray of build, incubated
Carry out second time when going out 50 days to select, leave black juvenile fish, eliminate the individuality of steel gray body colour, and classify by Individual Size；
Carry out third time after hatching 90 days to classify, the individuality that superseded build is the best, and continue to press Individual Size classification cultivation.
Further, described fish nest uses polyethylene window screening, every 35cm2。
Further, after described fish nest soaks 1 minute in the methylene blue solution of 10 mg/litre, hatchery is then moved to
Interior hatching.
Principle:
Grass goldfish type is more, cultivate time, the parent of individual selection as required need not, when screening, also
To distinguish according to the time that development of characters is stable.
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For Yuan, under the premise without departing from the principles of the invention, it is also possible to make some improvements and modifications, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (3)
1. grass goldfish breeding and the method for selection-breeding, it is characterised in that comprise the steps:
1) parent culture
Obtain red grass goldfish, just select red grass goldfish as parent；Obtain red Pennisetum centrasiaticum Tzvel Carassius auratus, just select red grass goldfish and red Pennisetum centrasiaticum Tzvel
Carassius auratus is as parent；Obtain blackwort symphytum Carassius auratus and choose ink dragon eyeball with black Cyprinus carpio L. as parent；
The stabilization characteristics of genetics filtered out, the obvious healthy individuals of varietal characteristic, from autumn upper one year, were divided by parent culture
Male and female are put in a suitable place to breed, alternately throw something and feed with natural live baits such as cladoceras with artifical compound feed；
Breeding density is: one age kind fish 15-20 tail/m2, two age kind fish 4-6 tail/m2；Producing in the previous moon, water filling is once weekly,
Producing in the last week, water filling every other day once, stimulates gonad development with current；
2) artificial induced spawning
Before and after mid-April, water temperature stability, when 20-22 DEG C, starts artificial induced spawning, has first been caught, checked gonad by female male parent
Developmental state, the parent that gonad development is good presses milter abdominal part light, has white seminal fluid to flow out, and light pressure raun abdominal part has ovum grain stream
Go out；Carry raun caudal peduncle, hence it is evident that the profile of visible both sides descensus ovarii；Oxytocin is solvent with 0.65% normal saline, every milli
Rising containing 25 micrograms LRH-A and 500 units HCG, every kilogram of raun 4 milliliters of oxytocin of injection, every kilogram of milter is injected 2 milliliters and hastens parturition
Element；Carrying out a shot at pectoral fin base portion, noting into the pin degree of depth 0.5 cm, in order to avoid stabbing internal organs；
3) artificial insemination
Hasten parturition and parent fish put back to net cage or cement pit after injection, when 10 is little after time obvious chasing behavior occurs, fish for parent
Fish carries out artificial insemination under water；Being put into by fish nest and being filled with water in operation basin, right-hand man divides and holds each tail of male and female parent fish, in underwater,
Male and female cloacal aperture is relative, the ovulation of raun abdominal part is first extruded with thumb, extruding milter abdominal part row essence, is gently agitated for water immediately
Body so that it is be fully fertilized, and be uniformly attached on fish nest；
4) artificial incubation
Hatchery area is with 10-15m2Preferably, hatchery use water nylon silk cover filtering more than 100 mesh, it is strictly on guard against that harmful organisms enters
Enter；Lentic hatching, water transparency 40-60 centimetre, dissolved oxygen is more than 50 mg/litre, depth of water 15-25 centimetre, puts ovum density 2000
Grain/m2；If meeting consecutive low temperature, wet weather, germ cell infects fish molds, and the methylene blue of 1 mg/litre of can splashing in hatching water is molten
Liquid is controlled；Such as torrential rain, reply pond hides, it is to avoid water quality, fluctuating temperature are crossed play and affected incubation rate；Hatching
During keep water temperature the most critically important；Should sunshade in time with add water, it is to avoid water temperature is more than 30 DEG C；
5) larvae cultivation
Double as nursery pond with hatchery, when fry membrane, in pond, add zooplankton, after the flat trip of fry membrane, in time will
Fish nest removes in pond；After the flat trip of grass goldfish Seedling, in pond, the microzooplankton such as wheel animalcule is ingested totally in 1-2 days at once；
Wheel animalcule is leached every day by initial 4-5 days domestic demands after fry puts down trip by the food organisms dragged for 60 mesh sieve thin,tough silk, is thrown
Being fed in pond, if this stage there is not wheel animalcule, egg yolk water of can splashing replaces, with the amount of every ten thousand tail fry 0.5-1 every day ripe egg yolk, and will
Ripe egg yolk wraps up with 60 mesh screen cloths, rubs and washes out vaporific uniform egg yolk water, splash along pond surrounding and throw something and feed in bucket water；One day sooner or later
Throw something and feed twice；
5-10 days, throwing something and feeding based on the small-sized cladocera after filtering, this stage should keep have cladocera alive all the time daytime in pond；
Throw something and feed after 10 days without the cladocera filtered；
The early natural live bait such as upslide cladocera after 20 days, throws mixed feed afternoon；
Keep nursery pond water colour during larvae cultivation preferably peak green；Water level gradually adds from 20 centimetres and is deep to 50 centimetres；Keep
Dissolved oxygen is sufficient；
6) seed screening
The screening time of three kinds of grass goldfishes is different from method: the reddest and red white grass goldfish kind, and hereditary character is the most stable,
Almost without the individuality that tail fin is leafy in filial generation, body colour main development helps white, Quan Bai, steel gray four types red, red, Qi Zhongqing
The individual ratio of ash, less than 1%, is eliminated the whitest individuality, is accounted for 5%-15%；Red grass goldfish is relatively slow with the annesl of red Pennisetum centrasiaticum Tzvel Carassius auratus,
Complete annesl after hatching 60 days, then select；If blackwort symphytum Carassius auratus parent backcrosses, number of times is few, then hereditary stability is poor,
Started to select for the first time from 20 days, eliminate that tail fin is leafy, fertile short, the individuality that body colour is steel gray of build, when hatching 50 days, carry out second
Secondary select, leave black juvenile fish, eliminate the individuality of steel gray body colour, and classify by Individual Size；Is carried out after hatching 90 days
Three subseries, the individuality that superseded build is the best, and continue to press Individual Size classification cultivation.
Grass goldfish the most according to claim 1 breeding and the method for selection-breeding, it is characterised in that described fish nest uses poly-second
Alkene window screening, every 35cm2。
Grass goldfish the most according to claim 1 and 2 breeding and the method for selection-breeding, it is characterised in that described fish nest is 10
After soaking 1 minute in the methylene blue solution of mg/litre, hatch in then moving to hatchery.
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| CN110269010A (en) * | 2019-07-29 | 2019-09-24 | 天津农学院 | The method of oriental cherry gold-plating goldfish germplasm initiative |
| CN110269011A (en) * | 2019-07-29 | 2019-09-24 | 天津农学院 | A kind of method of fancy carp cement pit breeding and high density seed rearing |
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Application publication date: 20161207 |