CN110024724A - A kind of artificial fecundation method of red fin jenoar - Google Patents
A kind of artificial fecundation method of red fin jenoar Download PDFInfo
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- CN110024724A CN110024724A CN201910443862.4A CN201910443862A CN110024724A CN 110024724 A CN110024724 A CN 110024724A CN 201910443862 A CN201910443862 A CN 201910443862A CN 110024724 A CN110024724 A CN 110024724A
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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
- A01K61/10—Culture of aquatic animals of fish
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23K—FODDER
- A23K10/00—Animal feeding-stuffs
- A23K10/20—Animal feeding-stuffs from material of animal origin
- A23K10/22—Animal feeding-stuffs from material of animal origin from fish
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23K—FODDER
- A23K10/00—Animal feeding-stuffs
- A23K10/30—Animal feeding-stuffs from material of plant origin, e.g. roots, seeds or hay; from material of fungal origin, e.g. mushrooms
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23K—FODDER
- A23K20/00—Accessory food factors for animal feeding-stuffs
- A23K20/10—Organic substances
- A23K20/142—Amino acids; Derivatives thereof
- A23K20/147—Polymeric derivatives, e.g. peptides or proteins
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23K—FODDER
- A23K20/00—Accessory food factors for animal feeding-stuffs
- A23K20/10—Organic substances
- A23K20/163—Sugars; Polysaccharides
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23K—FODDER
- A23K20/00—Accessory food factors for animal feeding-stuffs
- A23K20/10—Organic substances
- A23K20/174—Vitamins
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23K—FODDER
- A23K50/00—Feeding-stuffs specially adapted for particular animals
- A23K50/80—Feeding-stuffs specially adapted for particular animals for aquatic animals, e.g. fish, crustaceans or molluscs
-
- 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
-
- 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
- Y02A40/818—Alternative feeds for fish, e.g. in aquacultures
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
- Y02P60/80—Food processing, e.g. use of renewable energies or variable speed drives in handling, conveying or stacking
- Y02P60/87—Re-use of by-products of food processing for fodder production
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- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Polymers & Plastics (AREA)
- Engineering & Computer Science (AREA)
- Animal Husbandry (AREA)
- Zoology (AREA)
- Food Science & Technology (AREA)
- Marine Sciences & Fisheries (AREA)
- Proteomics, Peptides & Aminoacids (AREA)
- Biotechnology (AREA)
- Physiology (AREA)
- Molecular Biology (AREA)
- Environmental Sciences (AREA)
- Health & Medical Sciences (AREA)
- Birds (AREA)
- Botany (AREA)
- Insects & Arthropods (AREA)
- Mycology (AREA)
- Biodiversity & Conservation Biology (AREA)
- Biomedical Technology (AREA)
- Fodder In General (AREA)
- Farming Of Fish And Shellfish (AREA)
Abstract
The present invention provides a kind of artificial fecundation method of red fin jenoar, comprising the following steps: Juvenile stage, parent population cultivation net cage, parent population reinforced cultivating, sexual gland hasten parturition, be fertilized ovum collecting and hatching, the cultivation of fry；Science collocation bait of the invention and from water quality management to parent population reinforced cultivating, hastened parturition hatching by sexual gland, control the salinity and temperature of water body, so that the prelarva hatching rate hatched reaches 80% or more, survival rate reaches 90% or more.
Description
Technical field
The present invention relates to aquatic products Cultivating techniques field, in particular to a kind of artificial fecundation method of red fin jenoar.
Background technique
Red fin jenoar, scientific name: Lutjanus erythropterus (Bloch, 1790), be Lutjanidae, Lutianus one
Kind fish.Side is flat, and mouth is big, and eye is big.Body carries on the back rufous, and juvenile fish has a dark-coloured wide angled tape by dorsal fin starting point to kiss end.It is subordinate to
Lutjanidae fish, fish body is micro- to be commonly called as snapper since its body takes on a red color in flat-sided shape, for wide warm eurysaline fishes, has become in recent years
It for the new fish kind of the ground sea-farming such as Fujian, Guangdong, Hainan, and quickly grows, the demand of seed is constantly expanded.But it plants
The demand of seedling is to each place because season, temperature, cultivation etc. require different, and China area of largely bordering on the sea requires manually
Propagation method.
Summary of the invention
For mirror with this, the present invention proposes a kind of artificial fecundation method of red fin jenoar, solves above-mentioned technical problem.
The technical scheme of the present invention is realized as follows: a kind of artificial fecundation method of red fin jenoar, comprising the following steps:
(1) Juvenile stage: normal well-balanced, disease-free, energetic, the good red fin flute of gonad development of selection health, figure
Porgy is that the ratio of parent, wherein milter and raun are 1:2~4；
(2) the cultivation net cage of parent population
It is 4000~6000m in area2Sea pond in be arranged 3~5 mouthfuls of net cages, specification be 4~8m × 4~8m × 2
~4m, has abundant water resources, water nonpollution, and each net cage puts 150~230 tails in a suitable place to breed, and net cage is equipped with disengaging discharge outlet；
(3) parent population reinforced cultivating
Water quality management: 25~32 DEG C of summer water temperature, 12~25 DEG C of winter, salinity 16~35, ammonia nitrogen 0.1~0.3mg/L, it is molten
5~10mg/L of oxygen, pH value 7.0~8.0,1000~2000Lux of illumination, noise 40~65db are solved, every 5~7d changes a water, changes
Water is 20~50%, keeps water transparency in 20~40cm；
Bait is made of following parts by weight: 29~43 parts of oyster, 17~25 parts of soybean peptide, 1~48 part of Catergen, dimension life
Plain E28~52 part, 6~8 parts of spirulina polysaccharide, 12~26 parts of growth accelerator, injected volume are 3~5 times of parent population；
(4) sexual gland is hastened parturition
The parent population for having entered the yolk early development stage to gonad development carries out exogenous hormone, uses the first of 1~4mg/kg
Base testosterone and 2~8mg/kg steroid hormone androstenedione are injected every 10~15d, are continuously injected 5~8 times, so that raun
Genital gland indices reach 21.52~29.24%,
(5) fertilization ovum collecting and hatching
Male and female parent population is 20~45 in salinity in voluntarily oviposition, sperm drainage, ovum, is completed in the water body that water temperature is 20~30 DEG C
Fertilization, obtains fertilized eggs, is placed in 50~80 mesh screens and is filtered cleaning 1~3 time, removes sundries, fertilized eggs are placed on room
Hatch in interior nursery pond, water temperature is kept for 25~27 DEG C, and continuous oxygenation changes water 1~3 time, quantity of exchanged water 15~25% daily, keeps water
Body transparency in 30~50cm, addition mass ratio be 1:3~5:2~8:3~9 penicillin, bovine serum albumin, polyethylene glycol,
Seawater, additional amount are 0.2~0.3 times of fertilized eggs；
(6) cultivation of fry
It embathes fry: fry temporarily being supported to 3~5d to antisecosis and embathes 10~25min using fresh water, fry is rapid
Net cage in fishing, every 3~5d fresh water embathe fry, reach 0.5~0.8kg to fry weight, and every 13~18d fresh water embathes fry,
Reaching 1~1.2kg to fry weight, every 25~32d fresh water embathes fry, reach 1.8~2.8kg to fry weight, every 50~
80d fresh water embathes fry；
The bait of prelarva is made of following parts by weight: 25~35 parts of roe powder, concentration 22~60 parts of green alga, precious jade column powder
11~39 parts and surplus seawater, feeding volume are 1.5~3.2 times of prelarva.
Compared with prior art, the beneficial effects of the present invention are:
(1) artificial fecundation method of the invention selects the red preferable parent of fin jenoar to cultivate, parent's bait raw material group
At science, ingredient collocation rationally, and from water quality management each process conditions and breeding environment can matching coordinative, promote parent
This fish body constitution；
(2) rationally science screening drug hormone is hastened parturition by sexual gland so that parent's gonad development under conditions of artificial breeding
Maturation, control fertilization water body incubation condition, be added containing penicillin, bovine serum albumin, polyethylene glycol filtering sea, reduce sea
The surface tension of water, the floating water surface is lethal after avoiding prelarva from hatching, so that the hatching rate of parent is higher.
(3) fry is embathed by time setting, under the alternating of the flushing of fresh water and seawater hatching, enhances fish body
Immunity, and fry bait raw material is reasonably combined, bait scientific matching is mutually coordinated, promotes the appetite of prelarva, using the present invention
The prelarva hatched, growth is fast, nutrition is balanced, and immunity is strong, survival rate is high.
Specific embodiment
In order to be best understood from the technology of the present invention content, specific embodiment is provided below, the present invention is described further.
Experimental method used in the embodiment of the present invention is conventional method unless otherwise specified.
Material used in the embodiment of the present invention, reagent etc., are commercially available unless otherwise specified.
The present invention is that green alga is concentrated in fresh long day board using concentration green alga, is purchased from local aquaculture shop.
Embodiment 1
A kind of artificial fecundation method of red fin jenoar, comprising the following steps:
(1) Juvenile stage: normal well-balanced, disease-free, energetic, the good red fin flute of gonad development of selection health, figure
Porgy is that the ratio of parent, wherein milter and raun are 1:2；
(2) the cultivation net cage of parent population
It is 4000m in area2Sea pond in be arranged 3 mouthfuls of net cages, specification be 4m × 4m × 2m, have abundant water resources, water quality
Pollution-free, each net cage puts 150 tails in a suitable place to breed, and net cage is equipped with disengaging discharge outlet；
(3) parent population reinforced cultivating
Water quality management: 25 DEG C of summer water temperature, 12 DEG C of winter, salinity 16, ammonia nitrogen 0.1mg/L, dissolved oxygen 5mg/L, pH value
7.0, illumination 1000Lux, noise 40db, every 5d change a water, and quantity of exchanged water 20% keeps water transparency in 20cm；
Bait is made of following parts by weight: 29 parts of oyster, 17 parts of soybean peptide, 21 parts of vitamin C, 28 parts of vitamin E, spiral shell
6 parts of polysaccharides, 12 parts of growth accelerator are revolved, injected volume is 3 times of parent population；
(4) sexual gland is hastened parturition
The parent population for having entered the yolk early development stage to gonad development carries out exogenous hormone, uses the methyl testis of 1mg/kg
Ketone and 2mg/kg steroid hormone androstenedione are injected every 10d, continuous injection 5 times, so that raun genital gland indices reach
21.52%；
(5) fertilization ovum collecting and hatching
Male and female parent population is 20~45 in salinity in voluntarily oviposition, sperm drainage, ovum, is completed in the water body that water temperature is 20~30 DEG C
Fertilization, obtains fertilized eggs, is placed in 50~80 mesh screens and is filtered cleaning 1 time, removes sundries, fertilized eggs are placed on indoor rearing
To hatch in Miao Chi, water temperature is kept for 25 DEG C, continuous to be oxygenated, and is changed daily water 1 time, quantity of exchanged water 15%, and keep water transparency in 30cm,
Penicillin, bovine serum albumin, polyethylene glycol, the seawater that mass ratio is 1:3:2:3 is added, additional amount is 0.2 times of fertilized eggs；
(6) cultivation of fry
It embathes fry: fry temporarily being supported to 3d to antisecosis and embathes 10min using fresh water, fry is fished out rapidly to online
Case, every 3d fresh water embathe fry, reach 0.5kg to fry weight, and every 13d fresh water embathes fry, reach 1kg to fry weight,
Every 25d fresh water embathes fry, reaches 1.8kg to fry weight, every 50d fresh water embathes fry；
The bait of prelarva is made of following parts by weight: 25 parts of roe powder, 22 parts of green alga of concentration, 11 parts of precious jade column powder and remaining
Seawater is measured, feeding volume is 1.5 times of prelarva.
Embodiment 2
A kind of artificial fecundation method of red fin jenoar, comprising the following steps:
(1) Juvenile stage: normal well-balanced, disease-free, energetic, the good red fin flute of gonad development of selection health, figure
Porgy is that the ratio of parent, wherein milter and raun are 1:4；
(2) the cultivation net cage of parent population
It is 6000m in area2Sea pond in be arranged 5 mouthfuls of net cages, specification be 8m × 8m × 4m, have abundant water resources, water quality
Pollution-free, each net cage puts 230 tails in a suitable place to breed, and net cage is equipped with disengaging discharge outlet；
(3) parent population reinforced cultivating
Water quality management: 32 DEG C of summer water temperature, 25 DEG C of winter, salinity 35, ammonia nitrogen 0.3mg/L, dissolved oxygen 10mg/L, pH value
8.0, illumination 2000Lux, noise 65db, every 7d change a water, and quantity of exchanged water 50% keeps water transparency in 40cm；
Bait is made of following parts by weight: 43 parts of oyster, 25 parts of soybean peptide, 48 parts of vitamin C, 52 parts of vitamin E, spiral shell
8 parts of polysaccharides, 26 parts of growth accelerator are revolved, injected volume is 5 times of parent population；
(4) sexual gland is hastened parturition
The parent population for having entered the yolk early development stage to gonad development carries out exogenous hormone, uses the methyl testis of 4mg/kg
Ketone and 8mg/kg steroid hormone androstenedione are injected every 15d, continuous injection 8 times, so that raun genital gland indices reach
29.24%；
(5) fertilization ovum collecting and hatching
Male and female parent population is 45 in salinity in voluntarily oviposition, sperm drainage, ovum, completes fertilization in the water body that water temperature is 30 DEG C, obtains
It to fertilized eggs, is placed in 80 mesh screens and is filtered cleaning 3 times, remove sundries, fertilized eggs are placed in indoor raising of seedling pond and are hatched,
Water temperature is kept for 27 DEG C, and continuous oxygenation is changed water 3 times, quantity of exchanged water 25% daily, keeps water transparency in 50cm, mass ratio is added
For the penicillin of 1:5:8:9, bovine serum albumin, polyethylene glycol, seawater, additional amount is 0.2~0.3 times of fertilized eggs；
(6) cultivation of fry
It embathes fry: fry temporarily being supported to 5d to antisecosis and embathes 25min using fresh water, fry is fished out rapidly to online
Case, every 5d fresh water embathe fry, reach 0.8kg to fry weight, every 18d fresh water embathes fry, reaches to fry weight
1.2kg, every 32d fresh water embathe fry, reach 2.8kg to fry weight, every 80d fresh water embathes fry；
The bait of prelarva is made of following parts by weight: 35 parts of roe powder, 60 parts of green alga of concentration, 39 parts of precious jade column powder and remaining
Seawater is measured, feeding volume is 3.2 times of prelarva.
Embodiment 3
A kind of artificial fecundation method of red fin jenoar, comprising the following steps:
(1) Juvenile stage: normal well-balanced, disease-free, energetic, the good red fin flute of gonad development of selection health, figure
Porgy is that the ratio of parent, wherein milter and raun are 1:3；
(2) the cultivation net cage of parent population
It is 5000m in area2Sea pond in be arranged 4 mouthfuls of net cages, specification be 6m × 6m × 3m, have abundant water resources, water quality
Pollution-free, each net cage puts 200 tails in a suitable place to breed, and net cage is equipped with disengaging discharge outlet；
(3) parent population reinforced cultivating
Water quality management: 28 DEG C of summer water temperature, 20 DEG C of winter, salinity 28, ammonia nitrogen 0.2mg/L, dissolved oxygen 7mg/L, pH value
7.5, illumination 1500Lux, noise 50db, every 6d change a water, and quantity of exchanged water 30% keeps water transparency in 30cm；
Bait is made of following parts by weight: 36 parts of oyster, 21 parts of soybean peptide, 35 parts of vitamin C, 40 parts of vitamin E, spiral shell
7 parts of polysaccharides, 19 parts of growth accelerator are revolved, injected volume is 4 times of parent population；
(4) sexual gland is hastened parturition
The parent population for having entered the yolk early development stage to gonad development carries out exogenous hormone, uses the methyl testis of 3mg/kg
Ketone and 5mg/kg steroid hormone androstenedione are injected every 12d, continuous injection 6 times, so that raun genital gland indices reach
24.3%；
(5) fertilization ovum collecting and hatching
Male and female parent population is 32 in salinity in voluntarily oviposition, sperm drainage, ovum, completes fertilization in the water body that water temperature is 25 DEG C, obtains
It to fertilized eggs, is placed in 65 mesh screens and is filtered cleaning 2 times, remove sundries, fertilized eggs are placed in indoor raising of seedling pond and are hatched,
Water temperature is kept for 26 DEG C, and continuous oxygenation is changed water 2 times, quantity of exchanged water 20% daily, keeps water transparency in 40cm, mass ratio is added
For the penicillin of 1:4:5:6, bovine serum albumin, polyethylene glycol, seawater, additional amount is 0.25 times of fertilized eggs；
(6) cultivation of fry
It embathes fry: fry temporarily being supported to 4d to antisecosis and embathes 17min using fresh water, fry is fished out rapidly to online
Case, every 4d fresh water embathe fry, reach 0.6kg to fry weight, every 16d fresh water embathes fry, reaches to fry weight
1.1kg, every 28d fresh water embathe fry, reach 2.3kg to fry weight, every 60d fresh water embathes fry；
The bait of prelarva is made of following parts by weight: 30 parts of roe powder, 41 parts of green alga of concentration, 24 parts of precious jade column powder and remaining
Seawater is measured, feeding volume is 2.5 times of prelarva.
Comparative example 1
This comparative example is that a kind of artificial fecundation method of red fin jenoar is strengthened in parent population and trained with the difference of embodiment 3
It educates in step, does not carry out continuous oxygenation mode.
Comparative example 2
This comparative example is that a kind of artificial fecundation method of red fin jenoar is strengthened in parent population and trained with the difference of embodiment 3
It educates in step, there is no oyster, soybean peptide, spirulina polysaccharide in bait.
Comparative example 3
This comparative example is that a kind of artificial fecundation method of red fin jenoar, bait is by following heavy with the difference of embodiment 3
Measure part composition: 20 parts of oyster, 15 parts of soybean peptide, 20 parts of vitamin C, 25 parts of vitamin E, 5 parts of spirulina polysaccharide, growth accelerator
10 parts；
Comparative example 4
This comparative example is distinguished with embodiment 3 to be, a kind of artificial fecundation method of red fin jenoar, in fertilization ovum collecting
In hatching, be not added containing penicillin, bovine serum albumin, polyethylene glycol filtering sea.
Comparative example 5
This comparative example is distinguished with embodiment 3 to be, a kind of artificial fecundation method of red fin jenoar, in the cultivation of fry
In, fry is not carried out embathes.
Comparative example 6
The difference of this comparative example and embodiment 3 is, a kind of artificial fecundation method of red fin jenoar, the bait of prelarva by
Following parts by weight composition: 20 parts of roe powder, 20 parts of green alga of concentration, 10 parts of precious jade column powder and surplus seawater.
As a result it measures
The hatching rate of the present invention red fin jenoar fry obtained to above-described embodiment 1~3 and comparative example 1~6, survival rate
Etc. indexs counted, the results are shown in Table 1.
| Group | Hatching rate (%) | Survival rate (%) |
| Embodiment 1 | 82 | 90 |
| Embodiment 2 | 87 | 95 |
| Embodiment 3 | 89 | 98 |
| Comparative example 1 | 82 | 87 |
| Comparative example 2 | 71 | 82 |
| Comparative example 3 | 79 | 89 |
| Comparative example 4 | 75 | 80 |
| Comparative example 5 | 75 | 82 |
| Comparative example 6 | 79 | 85 |
A kind of artificial fecundation method of red fin jenoar of the invention, by water quality management and breeding environment to temperature, salinity,
Dissolved oxygen, pH value, oxygenation, the process conditions in ammonia nitrogen are regulated and controled, be remarkably reinforced in embodiment 3 and comparative example 1 hatching rate and at
Motility rate；The bait of scientific matching is influential to the cultivation of parent population, as can be seen that embodiment 3 exists in comparative example 2, comparative example 3
Under the matching coordinatives such as oyster, soybean peptide, spirulina polysaccharide, parent population hatching rate increases significantly；Do not add in incubating oosperm
Enter containing penicillin, bovine serum albumin, polyethylene glycol filtering sea, embodiment survives in embodiment compared with comparative example 4
Rate reaches 90% or more；The cleaning for not carrying out fry in comparative example 5 enhances the immune of fish body under the alternating of fresh water and salt water
Power improves survival rate；Fry bait scientific matching is mutually coordinated, promotes the appetite of prelarva, from comparative example 6 it is found that using this hair
Bright bait can equally improve the survival rate of fry.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (5)
1. a kind of artificial fecundation method of red fin jenoar, it is characterised in that: the following steps are included:
(1) Juvenile stage: selection health, figure are normal well-balanced, disease-free, energetic, and the good red fin jenoar of gonad development is
Parent, wherein the ratio of milter and raun is 1:2~4；
(2) the cultivation net cage of parent population
It is 4000~6000m in area2Sea pond in be arranged 3~5 mouthfuls of net cages, specification be 4~8m × 4~8m × 2~4m,
It has abundant water resources, water nonpollution, each net cage puts 150~230 tails in a suitable place to breed；
(3) parent population reinforced cultivating
Water quality management: 25~32 DEG C of summer water temperature, 12~25 DEG C of winter, salinity 16~35,0.1~0.3mg/L of ammonia nitrogen, dissolved oxygen
5~10mg/L, pH value 7.0~8.0,1000~2000Lux of illumination, noise 40~65db, every 5~7d change a water, quantity of exchanged water
It is 20~50%, keeps water transparency in 20~40cm；
Bait is made of following parts by weight: 29~43 parts of oyster, 17~25 parts of soybean peptide, 1~48 part of Catergen, vitamin
E28~52 part, 6~8 parts of spirulina polysaccharide, 12~26 parts of growth accelerator, injected volume are 3~5 times of parent population；
(4) sexual gland is hastened parturition
The parent population for having entered the yolk early development stage to gonad development carries out exogenous hormone, uses methyltestosterone and steroid hormone
Androstenedione is injected every 10~15d, is continuously injected 5~8 times so that raun genital gland indices reach 21.52~
29.24%；
(5) fertilization ovum collecting and hatching
Male and female parent population voluntarily lays eggs, sperm drainage, and ovum is completed to be fertilized in water body, obtains fertilized eggs, be placed in 50~80 mesh screens into
Row filtering cleaning 1~3 time, sundries is removed, fertilized eggs are placed in indoor raising of seedling pond and are hatched, water temperature is kept for 25~27 DEG C, continuously
Oxygenation, is changed water 1~3 time, quantity of exchanged water 15~25% daily, keeps water transparency in 30~50cm, additions mass ratio for 1:3~
Penicillin, bovine serum albumin, polyethylene glycol, the seawater of 5:2~8:3~9, additional amount are 0.2~0.3 times of fertilized eggs；
(6) cultivation of fry
It embathes fry: fry temporarily being supported to 3~5d to antisecosis and embathes 10~25min using fresh water, fry is fished out rapidly
Net cage, every 3~5d fresh water embathe fry, reach 0.5~0.8kg to fry weight, every 13~18d fresh water embathes fry, to fish
Seedling body weighs to 1~1.2kg, and every 25~32d fresh water embathes fry, reaches 1.8~2.8kg to fry weight, every 50~80d is light
Fry is washed in water logging；
The bait of prelarva is made of following parts by weight: 25~35 parts of roe powder, 22~60 parts of green alga of concentration, precious jade column powder 11~
39 parts and surplus seawater, feeding volume are 1.5~3.2 times of prelarva.
2. a kind of artificial fecundation method of red fin jenoar as described in claim 1, it is characterised in that: the parent population reinforced cultivating
Oxygenation capacity be 4~8mg/L, rate be 0.2~0.4mg/L.
3. a kind of artificial fecundation method of red fin jenoar as described in claim 1, it is characterised in that: the parent population bait by with
Lower parts by weight composition: 30~40 parts of oyster, 20~23 parts of soybean peptide, 30~40 parts of vitamin C, 30~48 parts of vitamin E, spiral
6.8~7.6 parts of polysaccharides, 17~22 parts of growth accelerator.
4. a kind of artificial fecundation method of red fin jenoar as described in claim 1, it is characterised in that: the sexual gland is hastened parturition methyl
The dosage of testosterone is 1~4mg/kg, and the dosage of steroid hormone androstenedione is 2~8mg/kg.
5. a kind of artificial fecundation method of red fin jenoar as described in claim 1, it is characterised in that: the male and female parent population produces
Ovum, sperm drainage water salinity be 20~45, water temperature be 20~30 DEG C.
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