CN106305522A - Artificial breeding method of turbots - Google Patents
Artificial breeding method of turbots Download PDFInfo
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- CN106305522A CN106305522A CN201610706376.3A CN201610706376A CN106305522A CN 106305522 A CN106305522 A CN 106305522A CN 201610706376 A CN201610706376 A CN 201610706376A CN 106305522 A CN106305522 A CN 106305522A
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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
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- 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 invention discloses an artificial breeding method of turbots, comprising the steps of farm building, water quality treatment, parent fish domestication, parent fish feeding, artificial insemination, fertilized egg hatching, fry feeding and later-period management. According to the artificial breeding method of the turbots, parent fish and hatched fries are managed in phases, the fertility rate reaches 94 percent, the hatching rate reaches 83 percent, the survival rate reaches 42 percent, and the economic income is improved by 22.7 percent; the parent fish is subjected to domestication, is promoted to be grown in batches, and is convenient to manage, the parent fish is subjected to hasten parturition and artificial insemination, the quality of genital cells is improved, the condition is optimum during hatching by controlling, so that the fertility rate and the hatching rate are obviously improved; the hatched fries are subjected to management and cultivation in phases, so that the disease resistance of the fries is enhanced and the survival rate is obviously improved; the parent fish and the fries are fed with artificial formula feed by times, the quantity of exchanged water is kept, and the artificial breeding method is simple and efficient, and can guarantee the scientific ratio of the feed, boost immunity, promote growth and development, keep the water quality limpid, and inhibit pathogenic microorganism propagation.
Description
Technical field
The invention mainly relates to cultural technique field, particularly relate to the artificial raise seedling method of a kind of many precious fishes.
Background technology
Many precious fishes, are commonly called as brill, claim " many precious fishes " in China.Originate in Europe Atlantic Oceanic Region, within 1992, draw
Enter China, become the breed variety that Northern Coastal Region of China is important.Abundant colloid is contained with fin limit under many precious fish skin, internal
Scarifying without ossiculum, visceral mass is little, and dressing percentage is high, and muscle is abundant delicate, delicious flavour, can steam in clear soup, stews in clear soup, does raw fish, do
Soup, nutritious, often eat, it is possible to looks improving and the skin nourishing, kidney-tonifying and brain tonic, protect cardiovascular and cerebrovascular vessel, improve vision, supporing yang refresh oneself, grow
Mend body-building, improve immunity.
Along with people are more and more higher to the favor degree of many precious fishes, cultivation scale is also constantly expanding, the demand to fry
The most increasing, and in the reproduction technique of the most precious fishes, rate of fertilization is low, and incubation rate is low, and adaptive capacity to environment is poor, therefore,
The survival rate of fry is the lowest, completes to metamorphosis Zi hatching, and survival rate can only achieve 20 ~ 25%, gives the cultivation peasant household band of many precious fishes
Carrying out the biggest economic loss, the high-efficiency artificial method for culturing seedlings of a kind of many precious fishes is needed in market badly.
Summary of the invention
In order to make up the defect of prior art, it is an object of the invention to provide the artificial raise seedling method of a kind of many precious fishes.
The artificial raise seedling method of a kind of many precious fishes, specifically includes following steps:
(1) plant sets up: select sunny, have a good transport service, water source is convenient, away from the region polluted, set up plant, support
The parent fish culturing pool that to set up a length of 6 ~ 8m, width in growing field be 5 ~ 6m, the degree of depth is 1.5 ~ 1.7m, the base, pond of parent fish culturing pool
Water inlet and outlet are set at edge, set up control light, temperature control, control oxygen in plant and control wet equipment, it is simple to accurately control cultivation
Condition；
(2) water treatment: parent fish enters before pond 10 ~ 12 hours, adds the water meeting country's fishery water quality secondary standard from water inlet,
In regulation plant, temperature is 8 ~ 9 DEG C, and the dissolved oxygen amount of water is 9 ~ 10mg/L, and salinity is 30 ~ 32, pH7.9 ~ 8.1, and ammonia-nitrogen content is
0.03 ~ 0.05mg/L, water exchange capacity is 4 ~ 5 full dose/days, keeps the best growing condition of parent fish；
(3) parent fish domestication: female according to quantity ratio: the ratio of hero=1:2 ~ 3 selects the body constitution parent without hindering, energy is strong healthy and strong, anosis
Fish, divides pool cultivated by male and female parent fish, and breeding density is 2 tails/m2, put in a suitable place to breed 1 ~ 3 day, water temperature was 10 ~ 11 DEG C, and intensity of illumination is
100 ~ 150lx, illumination 1 hour, dark 3 hours；4 ~ 9 days, water temperature was 12 ~ 14 DEG C, and intensity of illumination is 200 ~ 250lx, and illumination 2 is little
Time, dark 4 hours；10 ~ 16 days, water temperature was 15 ~ 16 DEG C, and intensity of illumination is 300 ~ 400lx, illumination 4 hours, dark 4 hours；17
~ 25 days, water temperature was 17 ~ 18 DEG C, and intensity of illumination is 500 ~ 600lx, illumination 4 hours, dark 2 hours；After 26 days, water temperature is 19
~ 20 DEG C, intensity of illumination is 500 ~ 600lx, illumination 5 hours, dark 1 hour, Gradual scene change condition, strengthens parent fish and adapts to
Property, parent fish can be made after 40 days the most ripe；
(4) parent fish feeds intake: day inventory be the 1.4 ~ 1.6% of parent fish weight, morning 5:30 ~ 6:30, inventory is day inventory
25 ~ 30%, afternoon 16:30 ~ 17:30, inventory is the 20 ~ 25% of day inventory, and evening, 21:00 ~ 22:00 threw something and fed remaining raising
Material, increases water quality and efficiency of feed utilization；
(5) artificial insemination: before laying eggs 22 ~ 24 hours, is adjusted to 12 ~ 14 DEG C by water temperature, and point two pins, to parent fish oxytocin injection, shorten
Sexual cell efflux time, improves sexual cell quality, after the second pin is injected 10 ~ 12 hours, takes milter seminal vesicle, obtains essence
Liquid, squeezes rapidly the ovum taking raun, mixes with seminal fluid, add the saline solution that salinity is 27 ~ 29, and volume ratio is ovum: seminal fluid:
Saline solution=1:120 ~ 140:120 ~ 140, are gently mixed uniformly, stand 8 ~ 10 minutes, add seminal fluid volume 1.2 ~ 1.4 times amount
Saline solution, then be gently mixed uniformly, stand 20 ~ 25 minutes, after clear water is rinsed well, the salt of addition seminal fluid volume 6 ~ 8 times amount
Solution, is gently mixed after uniformly, stands 10 ~ 15 minutes, hatches respectively and precipitate ovum in collection, by hatch and be placed in hatchery and enter
Row hatching, precipitation ovum the most again adds seminal fluid, double fertilization 1 time, improves rate of fertilization；
(6) incubating oosperm: moving into before hatchery 10 ~ 12 hours in germ cell, in regulation hatchery, water temperature is 13 ~ 14 DEG C, water
Dissolved oxygen amount be 9 ~ 10mg/L, intensity of illumination is 600 ~ 700lx, and salinity is 30 ~ 32, pH7.9 ~ 8.1, ammonia-nitrogen content is 0.03 ~
0.05mg/L, water exchange capacity is 2 ~ 3 full dose/days, optimizes incubation condition, and it is 40 ~ 500,000/m that germ cell throws in density3, often
It morning, 6:00 ~ 7:00 and 18:00 in afternoon ~ 19:00 scavenger precipitation ovum and dead fry, moved to culturing pool by hatching nursery, suppression
Pathogenic microorganism, improves incubation rate；
(7) fry is raised: input density is 16000 ~ 18000 tails/m2, man-made feeds of only throwing something and feeding, the every day clear end, once, is carried out point
Stage management, according to the physiological characteristics of fry, changes rearing conditions；
(8) final-period management: after fry body length 6 ~ 7cm, can carry out selling or move to marketable fish poud and cultivate.
The feedstuff of described step (3), for artifical compound feed, crude protein content is 52 ~ 54%, and fat content is 7 ~ 9%.
The oxytocin injection of described step (5), the first pin injection: chorionic-gonadotropin hormone (HCG) 120 ~ 130IU/kg,
Luteotropin releasing hormone d-ala analog (LRH-A) 5 ~ 7mg/Kg；Second pin injection: HCG 60 ~ 70IU/kg, injection volume is with raun
Body weight calculates, and milter halves, and every two pin interval times are 20 ~ 22 hours.
The saline solution of described step (5), crosses 500 mesh sieves, through 121 DEG C of sterilizings 20 ~ 25 minutes.
The man-made feeds of described step (7), day feeding volume be the 16 ~ 18% of fry body weight, crude protein content is 48 ~ 50%,
Fat content is 12 ~ 14%.
The management stage by stage of described step (7), hatching fry 1 ~ 2 day, temperature is 13 ~ 14 DEG C, intensity of illumination is 300 ~
400lx, illumination 4 hours, dark 2 hours, water exchange capacity was 1/4 full dose/day；3 ~ 7 days, throw something and feed 7 ~ 8 times/day, temperature is 15 ~
17 DEG C, intensity of illumination is 600 ~ 700lx, illumination 4 hours, and dark 2 hours, water exchange capacity was 1/2 full dose/day；8 ~ 13 days, throw
Feeding 6 ~ 7 times/day, temperature is 17 ~ 18 DEG C, and intensity of illumination is 700 ~ 800lx, illumination 4 hours, dark 2 hours, water exchange capacity is 4 ~
5 full dose/days；14 ~ 26 days, throwing something and feeding 4 ~ 5 times/day, dilution fry density is 3500 ~ 4000 tails/m2, temperature is 17 ~ 18 DEG C, light
Being 700 ~ 800lx according to intensity, illumination 5 hours, dark 1 hour, water exchange capacity was 4 ~ 5 full dose/days；27 ~ 46 days, throw something and feed 3 ~ 4
Times/day, dilution fry density is 2500 ~ 2700 tails/m2, temperature is 17 ~ 18 DEG C, and intensity of illumination is 800 ~ 900lx, and illumination 5 is little
Time, dark 1 hour, water exchange capacity was 6 ~ 8 full dose/days；47 ~ 54 days, complete metamorphosis, throw something and feed 3 ~ 4 times/day, by fry size
Dividing large, medium and small grade to raise, fry density is 2000 ~ 2200 tails/m2, temperature is 17 ~ 18 DEG C, intensity of illumination is 800 ~
900lx, illumination 5 hours, dark 1 hour, water exchange capacity was 8 ~ 10 full dose/days；To fry body length 6 ~ 7cm after 55 days, throw something and feed 3
~ 4 times/day, fry density is 1200 ~ 1400 tails/m2, temperature is 17 ~ 18 DEG C, and intensity of illumination is 800 ~ 900lx, illumination 5 hours,
Dark 1 hour, water exchange capacity was 10 ~ 11 full dose/days.
The invention have the advantage that the artificial raise seedling method of a kind of many precious fishes that the present invention provides, to parent fish and hatching fry
Manage stage by stage, carry out batch (-type) illumination, strengthen parent fish and the adaptation of fry and stress ability, fertilization rate reached 94%, hatching
Rate reaches 83%, and fry completes to metamorphosis Zi hatching, survival rate 42%, and income improves 22.7%；Parent fish is through the most accurate
Cultivating condition, tames, and promotes in batches ripe, it is simple to management, parent fish is through hastening parturition and artificial insemination, and it is repeated to precipitate ovum
Artificial insemination, makes ovum to focus on, and improves sexual cell quality, strictly controls optimal condition, make fertilization during hatching
Rate and incubation rate significantly improve；Hatching fry, according to the change of physiological feature, is managed cultivation by stages, strengthens the disease-resistant energy of fry
Power, reduces disease and occurs, hence it is evident that improve survival rate, shorten culturing time 10 ~ 15 days；Parent fish and fry are thrown something and fed several times and manually join
Closing feedstuff, keep quantity of exchanged water, plankton feedstuff of not throwing something and feeding, the most efficiently, it is ensured that forage compounding science, efficiency of feed utilization is high,
Enhancing immunity, enhancing development, keep water quality limpid, suppression pathogenic microorganism breeding.
Detailed description of the invention
With specific embodiment, the present invention is described below.
Embodiment
The artificial raise seedling method of a kind of many precious fishes, specifically includes following steps:
(1) plant sets up: select sunny, have a good transport service, water source is convenient, away from the region polluted, set up plant, support
The parent fish culturing pool that to set up a length of 8m, width in growing field be 6m, the degree of depth is 1.5m, the Chi Dibianyuanchu of parent fish culturing pool is arranged
Water inlet and outlet, set up control light, temperature control, control oxygen and control wet equipment, it is simple to accurately controlling cultivating condition in plant；
(2) water treatment: parent fish enters pond first 12 hours, adds the water meeting country's fishery water quality secondary standard, adjusts from water inlet
In joint plant, temperature is 9 DEG C, and the dissolved oxygen amount of water is 10mg/L, and salinity is 31, pH7.9 ~ 8.1, and ammonia-nitrogen content is 0.03mg/L,
Water exchange capacity is 4 full dose/days, keeps the best growing condition of parent fish；
(3) parent fish domestication: female according to quantity ratio: the ratio of hero=1:3 selects the body constitution parent without hindering, energy is strong healthy and strong, anosis
Fish, divides pool cultivated by male and female parent fish, and breeding density is 2 tails/m2, put in a suitable place to breed 1 ~ 3 day, water temperature was 11 DEG C, and intensity of illumination is
150lx, illumination 1 hour, dark 3 hours；4 ~ 9 days, water temperature was 13 DEG C, and intensity of illumination is 250lx, illumination 2 hours, and dark 4 is little
Time；10 ~ 16 days, water temperature was 16 DEG C, and intensity of illumination is 400lx, illumination 4 hours, dark 4 hours；17 ~ 25 days, water temperature was 18 DEG C,
Intensity of illumination is 600lx, illumination 4 hours, dark 2 hours；After 26 days, water temperature is 20 DEG C, and intensity of illumination is 600lx, illumination 5
Hour, dark 1 hour, Gradual scene change condition, strengthen parent fish adaptability, parent fish after 40 days, can be made the most ripe；
(4) parent fish feeds intake: day inventory be the 1.6% of parent fish weight, morning 5:30 ~ 6:30, inventory is the 30% of day inventory,
Afternoon 16:30 ~ 17:30, inventory is the 25% of day inventory, and evening, 21:00 ~ 22:00 threw something and fed remaining feedstuff, increased water quality
And efficiency of feed utilization；
(5) artificial insemination: lay eggs first 24 hours, water temperature is adjusted to 13 DEG C, point two pins, to parent fish oxytocin injection, shorten reproduction thin
Born of the same parents' efflux time, improves sexual cell quality, after the second pin is injected 10 ~ 12 hours, takes milter seminal vesicle, obtains seminal fluid, rapidly
Squeezing the ovum taking raun, mix with seminal fluid, add the saline solution that salinity is 29, volume ratio is ovum: seminal fluid: saline solution=1:
140:140, is gently mixed uniformly, stands 8 minutes, adds the saline solution of seminal fluid volume 1.2 times amount, then is gently mixed uniformly,
Stand 20 minutes, after clear water is rinsed well, add the saline solution of seminal fluid volume 8 times amount, after being gently mixed uniformly, stand 15 points
Clock, collects respectively and hatches and precipitate ovum, by hatch and be placed in hatchery and hatch, precipitation ovum adds seminal fluid the most again, weight
Plural fertilization 1 time, improves rate of fertilization；
(6) incubating oosperm: move into hatchery first 12 hours in germ cell, in regulation hatchery, water temperature is 13 DEG C, the dissolved oxygen of water
Amount is 9mg/L, and intensity of illumination is 700lx, and salinity is 31, pH7.9 ~ 8.1, and ammonia-nitrogen content is 0.03mg/L, and water exchange capacity is 3
Full dose/day, optimizing incubation condition, it is 500,000/m that germ cell throws in density3, every morning 6:00 ~ 7:00 and 18:00 in afternoon ~
19:00 scavenger precipitation ovum and dead fry, move to culturing pool by hatching nursery, suppresses pathogenic microorganism, improves incubation rate；
(7) fry is raised: input density is 18000 tails/m2, man-made feeds of only throwing something and feeding, the every day clear end, once manages stage by stage
Reason, according to the physiological characteristics of fry, changes rearing conditions；
(8) final-period management: after fry body length 6 ~ 7cm, can carry out selling or move to marketable fish poud and cultivate.
The feedstuff of described step (3), for artifical compound feed, crude protein content is 54%, and fat content is 9%.
The oxytocin injection of described step (5), the first pin injection: chorionic-gonadotropin hormone (HCG) 120IU/kg, rush Huang
Voxel releasing hormone analog (LRH-A) 6mg/Kg；Second pin injection: HCG 65IU/kg, injection volume calculates with raun body weight,
Milter halves, and every two pin interval times are 20 hours.
The saline solution of described step (5), crosses 500 mesh sieves, through 121 DEG C of sterilizings 20 minutes.
The man-made feeds of described step (7), day feeding volume be the 17% of fry body weight, crude protein content is 50%, and fat contains
Amount is 14%.
The management stage by stage of described step (7), hatching fry 1 ~ 2 day, temperature is 13 DEG C, and intensity of illumination is 400lx, illumination
4 hours, dark 2 hours, water exchange capacity was 1/4 full dose/day；3 ~ 7 days, throwing something and feeding 8 times/day, temperature is 17 DEG C, and intensity of illumination is
600lx, illumination 4 hours, dark 2 hours, water exchange capacity was 1/2 full dose/day；8 ~ 13 days, throwing something and feeding 7 times/day, temperature is 18
DEG C, intensity of illumination is 700lx, illumination 4 hours, and dark 2 hours, water exchange capacity was 5 full dose/days；14 ~ 26 days, throw something and feed 5 times/
My god, dilution fry density is 4000 tails/m2, temperature is 18 DEG C, and intensity of illumination is 800lx, illumination 5 hours, dark 1 hour, water
Exchange capacity is 5 full dose/days；27 ~ 46 days, throwing something and feeding 4 times/day, dilution fry density is 2700 tails/m2, temperature is 18 DEG C, illumination
Intensity is 900lx, illumination 5 hours, and dark 1 hour, water exchange capacity was 7 full dose/days；47 ~ 54 days, complete metamorphosis, throw something and feed 4
Times/day, divide large, medium and small grade to raise by fry size, fry density is 2000 tails/m2, temperature is 18 DEG C, intensity of illumination
For 900lx, illumination 5 hours, dark 1 hour, water exchange capacity was 8 full dose/days；To fry body length 6 ~ 7cm after 55 days, throw something and feed 4
Times/day, fry density is 1200 tails/m2, temperature is 18 DEG C, and intensity of illumination is 900lx, illumination 5 hours, dark 1 hour, and water is handed over
The amount of changing is 10 full dose/days.
Comparative example
Existing many precious fish method for culturing seedlings.
Embodiment and the mensuration of the many precious each indexs of fish method for culturing seedlings of comparative example:
In identical area, cultivate the how precious fish of same breed, tested time respectively according to the management method of embodiment and comparative example
It is shown in Table 1 for carrying out the measurement result of the many precious each indexs of fish method for culturing seedlings of record, embodiment and comparative example.
Table 1: embodiment and the mensuration of the many precious each indexs of fish method for culturing seedlings of comparative example
| Project | Embodiment 1 | Embodiment 2 | Embodiment 3 | Comparative example |
| Rate of fertilization/(%) | 94 | 93 | 92 | 82 |
| Incubation rate/(%) | 80 | 82 | 83 | 64 |
| Survival rate/(%) | 40 | 42 | 39 | 22 |
| The abnormal time/(my god) | 47~54 | 47~54 | 47~54 | 65~70 |
| Income improves/(%) | 22.7 | 22.7 | 22.7 | — |
Note: " " indicate without.
The result of table 1 shows, the artificial raise seedling method of the how precious fish of embodiment, rate of fertilization, incubation rate, survival rate are the most relatively
Comparative example is short, completes the time relatively comparative example of metamorphosis in advance, and income improves 16.4%, and the how precious fish that the present invention provides is described
Artificial raise seedling method there is good culture efficiency.
Claims (6)
1. the artificial raise seedling method of precious fish more than a kind, it is characterised in that specifically include following steps:
(1) plant sets up: select sunny, have a good transport service, water source is convenient, away from the region polluted, set up plant, support
The parent fish culturing pool that to set up a length of 6 ~ 8m, width in growing field be 5 ~ 6m, the degree of depth is 1.5 ~ 1.7m, the base, pond of parent fish culturing pool
Water inlet and outlet are set at edge, set up control light, temperature control, control oxygen in plant and control wet equipment；
(2) water treatment: parent fish enters before pond 10 ~ 12 hours, adds the water meeting country's fishery water quality secondary standard from water inlet,
In regulation plant, temperature is 8 ~ 9 DEG C, and the dissolved oxygen amount of water is 9 ~ 10mg/L, and salinity is 30 ~ 32, pH7.9 ~ 8.1, and ammonia-nitrogen content is
0.03 ~ 0.05mg/L, water exchange capacity is 4 ~ 5 full dose/days；
(3) parent fish domestication: female according to quantity ratio: the ratio of hero=1:2 ~ 3 selects the body constitution parent without hindering, energy is strong healthy and strong, anosis
Fish, divides pool cultivated by male and female parent fish, and breeding density is 2 tails/m2, put in a suitable place to breed 1 ~ 3 day, water temperature was 10 ~ 11 DEG C, and intensity of illumination is
100 ~ 150lx, illumination 1 hour, dark 3 hours；4 ~ 9 days, water temperature was 12 ~ 14 DEG C, and intensity of illumination is 200 ~ 250lx, and illumination 2 is little
Time, dark 4 hours；10 ~ 16 days, water temperature was 15 ~ 16 DEG C, and intensity of illumination is 300 ~ 400lx, illumination 4 hours, dark 4 hours；17
~ 25 days, water temperature was 17 ~ 18 DEG C, and intensity of illumination is 500 ~ 600lx, illumination 4 hours, dark 2 hours；After 26 days, water temperature is 19
~ 20 DEG C, intensity of illumination is 500 ~ 600lx, illumination 5 hours, dark 1 hour, parent fish can be made after 40 days the most ripe；
(4) parent fish feeds intake: day inventory be the 1.4 ~ 1.6% of parent fish weight, morning 5:30 ~ 6:30, inventory is day inventory
25 ~ 30%, afternoon 16:30 ~ 17:30, inventory is the 20 ~ 25% of day inventory, and evening, 21:00 ~ 22:00 threw something and fed remaining raising
Material；
(5) artificial insemination: before laying eggs 22 ~ 24 hours, is adjusted to 12 ~ 14 DEG C by water temperature, point two pins to parent fish oxytocin injection, second
After pin is injected 10 ~ 12 hours, take milter seminal vesicle, obtain seminal fluid, squeeze rapidly the ovum taking raun, mix with seminal fluid, add
Salinity is the saline solution of 27 ~ 29, and volume ratio is ovum: seminal fluid: saline solution=1:120 ~ 140:120 ~ 140, is gently mixed uniformly,
Stand 8 ~ 10 minutes, add the saline solution of seminal fluid volume 1.2 ~ 1.4 times amount, then be gently mixed uniformly, stand 20 ~ 25 minutes,
After clear water is rinsed well, add the saline solution of seminal fluid volume 6 ~ 8 times amount, after being gently mixed uniformly, stand 10 ~ 15 minutes, respectively
Hatch in collection and precipitate ovum, by hatch and be placed in hatchery and hatch, precipitation ovum adds seminal fluid, double fertilization 1 the most again
Secondary；
(6) incubating oosperm: moving into before hatchery 10 ~ 12 hours in germ cell, in regulation hatchery, water temperature is 13 ~ 14 DEG C, water
Dissolved oxygen amount be 9 ~ 10mg/L, intensity of illumination is 600 ~ 700lx, and salinity is 30 ~ 32, pH7.9 ~ 8.1, ammonia-nitrogen content is 0.03 ~
0.05mg/L, water exchange capacity is 2 ~ 3 full dose/days, and it is 40 ~ 500,000/m that germ cell throws in density3, every morning 6:00 ~ 7:
00 and 18:00 in afternoon ~ 19:00 scavenger precipitation ovum and dead fry, move to culturing pool by hatching nursery；
(7) fry is raised: input density is 16000 ~ 18000 tails/m2, man-made feeds of only throwing something and feeding, the every day clear end, once, is carried out point
Stage management；
(8) final-period management: after fry body length 6 ~ 7cm, can carry out selling or move to marketable fish poud and cultivate.
The most according to claim 1, the artificial raise seedling method of many precious fishes, it is characterised in that the feedstuff of described step (3), for people
Work mixed feed, crude protein content is 52 ~ 54%, and fat content is 7 ~ 9%.
The artificial raise seedling method of many precious fishes the most according to claim 1, it is characterised in that the injection of described step (5) is hastened parturition
Element, the first pin injection: chorionic-gonadotropin hormone (HCG) 120 ~ 130IU/kg, luteotropin releasing hormone d-ala analog (LRH-A)
5~7mg/Kg；Second pin injection: HCG 60 ~ 70IU/kg, injection volume calculates with raun body weight, and milter halves, during every two pin interval
Between be 20 ~ 22 hours.
The artificial raise seedling method of many precious fishes the most according to claim 1, it is characterised in that the saline solution of described step (5), mistake
500 mesh sieves, through 121 DEG C of sterilizings 20 ~ 25 minutes.
The artificial raise seedling method of many precious fishes the most according to claim 1, it is characterised in that the man-made feeds of described step (7),
Day, feeding volume was the 16 ~ 18% of fry body weight, and crude protein content is 48 ~ 50%, and fat content is 12 ~ 14%.
The artificial raise seedling method of many precious fishes the most according to claim 1, it is characterised in that the pipe stage by stage of described step (7)
Reason, hatching fry 1 ~ 2 day, temperature is 13 ~ 14 DEG C, and intensity of illumination is 300 ~ 400lx, illumination 4 hours, dark 2 hours, water coke slurry
Amount is 1/4 full dose/day；3 ~ 7 days, throwing something and feeding 7 ~ 8 times/day, temperature is 15 ~ 17 DEG C, and intensity of illumination is 600 ~ 700lx, and illumination 4 is little
Time, dark 2 hours, water exchange capacity was 1/2 full dose/day；8 ~ 13 days, throwing something and feeding 6 ~ 7 times/day, temperature is 17 ~ 18 DEG C, and illumination is strong
Degree is 700 ~ 800lx, illumination 4 hours, and dark 2 hours, water exchange capacity was 4 ~ 5 full dose/days；14 ~ 26 days, throw something and feed 4 ~ 5 times/
My god, dilution fry density is 3500 ~ 4000 tails/m2, temperature is 17 ~ 18 DEG C, and intensity of illumination is 700 ~ 800lx, illumination 5 hours,
Dark 1 hour, water exchange capacity was 4 ~ 5 full dose/days；27 ~ 46 days, throwing something and feeding 3 ~ 4 times/day, dilution fry density is 2500 ~ 2700
Tail/m2, temperature is 17 ~ 18 DEG C, and intensity of illumination is 800 ~ 900lx, illumination 5 hours, dark 1 hour, water exchange capacity be 6 ~ 8 complete
Amount/day；47 ~ 54 days, throwing something and feeding 3 ~ 4 times/day, divide large, medium and small grade to raise by fry size, fry density is 2000 ~ 2200
Tail/m2, temperature is 17 ~ 18 DEG C, and intensity of illumination is 800 ~ 900lx, illumination 5 hours, and dark 1 hour, water exchange capacity was 8 ~ 10
Full dose/day；To fry body length 6 ~ 7cm after 55 days, throwing something and feeding 3 ~ 4 times/day, fry density is 1200 ~ 1400 tails/m2, temperature is 17 ~
18 DEG C, intensity of illumination is 800 ~ 900lx, illumination 5 hours, and dark 1 hour, water exchange capacity was 10 ~ 11 full dose/days.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108056050A (en) * | 2017-12-22 | 2018-05-22 | 钦州市钦州港国鸿水产养殖专业合作社 | A kind of turbot aquaculture method |
| CN108541633A (en) * | 2018-06-29 | 2018-09-18 | 中国科学院海洋研究所 | A kind of luminous environment regulation and control method improving turbot fertilized eggs hatching rate and larvae juvenile fish growth |
| CN110506678A (en) * | 2019-09-29 | 2019-11-29 | 铜陵市新源水产专业合作社 | Hybridized prussian carp method for breeding based on integrated breeding technology |
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| CN110506678B (en) * | 2019-09-29 | 2022-01-07 | 铜陵市新源水产专业合作社 | Integrated feeding technology-based carassius auratus gibelio feeding method |
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