CN105660466B - A kind of method for controlling illumination to cultivate grouper fry - Google Patents
A kind of method for controlling illumination to cultivate grouper fry Download PDFInfo
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- 241001417495 Serranidae Species 0.000 title claims abstract description 43
- 238000005286 illumination Methods 0.000 title claims abstract description 31
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 59
- 241000195493 Cryptophyta Species 0.000 claims abstract description 33
- 239000013535 sea water Substances 0.000 claims abstract description 29
- 230000012447 hatching Effects 0.000 claims abstract description 14
- 241000251468 Actinopterygii Species 0.000 claims abstract description 10
- 230000008569 process Effects 0.000 claims description 22
- 241000195649 Chlorella <Chlorellales> Species 0.000 claims description 21
- 241000239250 Copepoda Species 0.000 claims description 19
- 241000700141 Rotifera Species 0.000 claims description 17
- 241000595940 Notostraca Species 0.000 claims description 11
- 241000238557 Decapoda Species 0.000 claims description 9
- 241000256128 Chironomus <genus> Species 0.000 claims description 8
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 8
- 239000001301 oxygen Substances 0.000 claims description 8
- 229910052760 oxygen Inorganic materials 0.000 claims description 8
- 238000004659 sterilization and disinfection Methods 0.000 claims description 8
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 claims description 7
- 241000894006 Bacteria Species 0.000 claims description 6
- 235000019789 appetite Nutrition 0.000 claims description 6
- 230000036528 appetite Effects 0.000 claims description 6
- 238000011534 incubation Methods 0.000 claims description 6
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- 238000002834 transmittance Methods 0.000 claims description 3
- 238000007781 pre-processing Methods 0.000 claims description 2
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- 125000001309 chloro group Chemical group Cl* 0.000 description 2
- 235000015097 nutrients Nutrition 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 206010028923 Neonatal asphyxia Diseases 0.000 description 1
- 208000037212 Neonatal hypoxic and ischemic brain injury Diseases 0.000 description 1
- 241000235342 Saccharomycetes Species 0.000 description 1
- 241000209140 Triticum Species 0.000 description 1
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- 239000000460 chlorine Substances 0.000 description 1
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Classifications
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- 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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- Marine Sciences & Fisheries (AREA)
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- Animal Husbandry (AREA)
- Biodiversity & Conservation Biology (AREA)
- Cultivation Of Plants (AREA)
- Cultivation Of Seaweed (AREA)
Abstract
The invention discloses a kind of method for controlling illumination to cultivate grouper fry, containing following steps：(1) indoor raising of seedling pond and outdoor nursery pond are set, take seawater to be pre-processed, cultivates algae water, hatches lithosporic fish fertilized egg；(2) the 3rd~10 day after hatching indoors in nursery pond, seedling is placed in outdoor nursery pond and is cultivated, light source is nature sunlight；(3) treat that to the 11st~22 day, sunshade net is covered on outdoor nursery pond for seedling culture；(4) treat that to the 23rd~30 day, seedling is transferred in indoor raising of seedling pond for seedling culture, illumination is carried out using fluorescent lamp, adjusting light intensity is 5000~8000lx, and daily light application time is 8~10h；(5) seedling culture is treated to the 31st~35 day, and adjusting light intensity is 3000~5000lx, and daily light application time is 7~8h, is emerged after cultivating 35~38 days.This method yield is high and stablizes, output fry constitution is excellent, disease is few, seedling percent is high.
Description
Technical field
The invention belongs to grouper fry Cultivating techniques field, and in particular to a kind of to control illumination to cultivate grouper fry
Method.
Background technology
Grouper is the important marine fish in China, is under the jurisdiction of Perciformes (Perciformes), Sushi sections
(Serranidae), Epinephelinae (Epinephelinae).Grouper delicious meat, it is full of nutrition, it is first-class in dining table
Delicacies, deep to be liked by various regions consumer, on the ground such as coastal areas of southern China Guangdong, Hainan, Fujian, Guangxi, grouper becomes sea
The main object of water cultivation, economic value are huge.
Grouper is needed the breeding phase of a wheat harvesting period, including opening, long fin by development of fertilized ova to plantlet stage
Bar, receive fin ray and long decorative pattern four-stage.Opening, receive critical days of the fin ray with the long decorative pattern stage for grouper seedling culture.
Opening stage, since seedling lacks locomitivity, is typically only capable to passively feed, therefore the viscosity of water body and the density of bait
Ingest and have a very big impact to it；The fin ray stage is being received, prelarva can flock together, and be easy to cause perinatal asphyxia；Spent to long
Line stage, prelarva can kill each other together.Therefore, it is necessary to a stable water body environment to ensure the survival rate of nursery.
Grouper is abyssal fishes, dislike of bright lights.Under natural conditions, the seedling just hatched can not bear the depth of water more than one meter
Pressure, the ecological niche of its early period of life should be marine superstructure water level, and natural sunlight is sufficient, bait enriches.As seed grows, institute
The hydraulic pressure increase that can be born, grouper seedling can move down its ecological niche, and the illumination being subject to is fewer and fewer or even finally hides sun
Light.
At present, most grouper fry is cultivated and all obtained by two ways, and one kind is the big pool or height
Position pond is cultivated, and one kind is cultivated for indoor cement pit.These methods respectively have advantage and disadvantage：Big the pool or feed coefficient yield are big, the time is short, behaviour
Make simple.But since water body is uncontrollable, influenced greatly by external environment change, disease is more, low seedling survival rate and unstable.Room
Interior cement pit yield is relatively low, but lack natural lighting auxiliary, water column structure it is unstable, it is necessary to increase more allogenic materials into
Row is adjusted, and adds its seedling cost, and prelarva does not obtain the promotion growth of natural lighting early period, extends its nursery
Time and add the death rate of nursery.Therefore both modes should be more perfect combine to be formed one more into
Ripe grouper nursery system, promotes the development of whole Grouper cultivating industry, to meet the market demand.
The content of the invention
It is an object of the invention to provide a kind of method for controlling illumination to cultivate grouper fry, this method yield is high, into
This is low, and fry constitution is good, disease is few, survival rate is high.
The above-mentioned purpose of the present invention is achieved through the following technical solutions：Grouper fry is cultivated in one kind control illumination
Method, comprise the steps of：
(1) indoor raising of seedling pond and outdoor nursery pond are set, seawater is chosen and is pre-processed, and cultivates algae water, while in room
Incubation net cage is set to be used to hatch lithosporic fish fertilized egg in interior nursery pond；
(2) the 3rd~10 day after hatching indoors in nursery pond, seedling is placed in outdoor nursery pond and is cultivated, light source is
Natural sunlight；
(3) seedling culture is treated to the 11st~22 day, and sunshade net is covered on outdoor nursery pond to reduce intensity of illumination；
(4) treat that to the 23rd~30 day, seedling is transferred in indoor raising of seedling pond for seedling culture, illumination carried out using fluorescent lamp,
Adjusting light intensity is 5000~8000lx, and daily light application time is 8~10h；
(5) seedling culture is treated to the 31st~35 day, adjusting light intensity is 3000~5000lx, and daily light application time is 7~8h,
Emerge after cultivating 35~38 days.
In the method that grouper fry is cultivated in above-mentioned control illumination：
Sea water preprocessing described in step (1) includes husky filter, sterilization, disinfection and aeration, and the cultivation algae water includes choosing
Take pretreated seawater, add concentration chlorella and prawn slice, cultivated under natural light, to chlorella final concentration of 1900~
2400ppm, as cultivating, algae water is stand-by.
When seedling being placed in outdoor nursery pond in step (2) being cultivated, it is preferably that 8000~16000 tails are excellent to put seedling density
Matter lithosporic fry/m3Seawater.
In step (2) the 3rd~10 day after hatching in lithosporic fish fertilized egg indoors nursery pond, seedling is placed in outdoor and is educated
When Miao Chi is cultivated, preferably daily 12~14 points cover sunshade net to reduce intensity of illumination on outdoor nursery pond.
The light transmittance of sunshade net is 70~80% in step (3).
, it is necessary to feed biological feed during seedling culture in step (2)~step (5), the biological feed includes
Live body seawater concentration chlorella, wheel animalcule, Copepods, chironomus larvas, fairy shrimp and fly maggot.
Wherein live body seawater concentration chlorella, chironomus larvas, fairy shrimp and fly maggot can directly be fed, and wheel animalcule and Copepods need
Fed after the nutrient processing of the unrighted acid rich in EPA, DHA.
The process that feeds of the biological feed is：The 3rd~10 day after hatching, feed live body seawater concentration chlorella and
The wheel animalcule of the mesh sieve net of 200 mesh~150 is crossed, it is 10~15/mL to feed wheel animalcule density in rear nursery pond；Cultivate to the 11st~13
My god, feed the wheel animalcule of the mesh sieve net of 200 mesh~150 and crossed the Copepods of the mesh sieve net of 150 mesh~60, and feed wheel animalcule in rear nursery pond
Density is 5~10/mL, Copepods density is 3~5/mL；Cultivate to the 14th~30 day, fed the mesh sieve net of 150 mesh~60
Copepods, it is 5~10/mL to feed Copepods density in rear nursery pond；Cultivate to the 31st~33 day, fed 150 mesh~
The Copepods of 60 mesh sieve nets, more than 60 mesh fairy shrimp and chironomus larvas, one day 4~5 times, untill fed to appetite, cultivates to the 33rd day
Afterwards, fairy shrimp and fly maggot are fed, one day 4~5 times, untill fed to appetite.
In step (2)~step (5) during seedling culture, seedling of different sizes is separated using filter screen, specifically
Process is：
(a) it is the 1st~17 day after hatching, 1 mesh, 5 mesh filter screens and outdoor nursery pond is contour, first 5 mesh filter screens are close to
It is close to 5 mesh filter screens in the pool wall and bottom of pond of nursery pond, then by 1 mesh filter screen；
(b) the 17th day, 1 mesh filter screen is slowly moved up into 40~50cm, is killed each other with reducing size grouper；
(c) the 23rd day, size seedling is respectively put into different indoor raising of seedling ponds using 1 mesh, 5 mesh filter screens and continues to cultivate
To emergence.
Need to maintain water body system to stablize in outdoor nursery pond cultivating process in step (2)~step (4), detailed process
For：Added in outdoor nursery pond after cultivating algae water and seedling, every five days seas for bleeding off 10~15cm height in outdoor nursery pond
Water, adds and cultivates algae water as replacement, while three times per day adds concentration chlorella, prawn slice and viable bacteria, and keeps outdoor
Dissolved oxygen content is no less than 4mg/L in the water body of nursery pond, and ammonia-nitrogen content is no more than 0.7mg/L.
Viable bacteria in the present invention is preferably the one or more in hay bacillus, Bacillus acidi lactici, saccharomycete and bacillus.
Need in nursery pond cultivating process to maintain water body system to stablize indoors in step (2), step (4) and step (5),
Detailed process is：Added indoors in nursery pond and cultivate algae water, treated to add seedling into indoor raising of seedling pond 1~10 day, persistently add
Enter to cultivate algae water, when adding seedling the 10th~13 day, be continuously added into pretreated seawater.
The invention has the advantages that：
(1) the method for the present invention carries out illumination control using different light sources, light intensity, light application time to the grouper fry nurturing period
System, maintains the stabilization of whole water column structure and ecology, and giving appropriate illumination in the grouper fry cultivation later stage can effectively promote
Growth and development and survival rate into grouper fry；
(2) the method for the present invention is by constantly adding the fresh algae water (cultivating algae water), concentration chlorella, work that renewal is cultivated
Bacterium, prawn slice to carry out stability contorting to cultivating grouper seedling water body, ensure its Measures of Algae in Water Body, biological feed, prelarva, organic
The mutual balance of the ecological factors such as thing, inorganic matter, maintains the stabilization of the factors such as its water body dissolved oxygen amount, ammonia nitrogen, can guarantee that grouper
The emergence rate of seed；
(3) the method for the present invention reduces grouper seedling using 1 mesh, 5 mesh filter screens separation size grouper seedling ecological niche
Between the loss killed each other, and then provide a suitable water body environment and social environment for the growth and development of grouper prelarva
To ensure that it survives emergence rate；
Embodiment
Embodiment 1
The method that grouper fry is cultivated in control illumination provided in this embodiment, comprises the steps of：
(1) indoor raising of seedling pond and outdoor nursery pond are set, seawater is chosen and is pre-processed, and cultivates algae water, while in room
Incubation net cage is set to be used to hatch lithosporic fish fertilized egg in interior nursery pond；
(2) the 3rd~10 day after hatching indoors in nursery pond, seedling is placed in outdoor nursery pond and is cultivated, light source is
Natural sunlight；
(3) seedling culture is treated to the 11st~22 day, and sunshade net is covered on outdoor nursery pond to reduce intensity of illumination；
(4) treat that to the 23rd~30 day, seedling is transferred in indoor raising of seedling pond for seedling culture, illumination carried out using fluorescent lamp,
Adjusting light intensity is 6500lx, and daily light application time is 10h；
(5) seedling culture is treated to the 31st~35 day, and adjusting light intensity is 4000lx, and daily light application time is 8h, is cultivated 35 days
After emerge.
The condition of indoor raising of seedling pond and outdoor nursery pond is recommended as follows in step (1)：
Outdoor nursery pond size is 36m2, depth is the cement pit of 1.2m, is covered with cloth for keeping out rain, production light is good, can be complete
The influence of lower sunlight and rain cover thoroughly, there is oxygenation pipeline.
Outdoor nursery pond sunshade net uses 80% light transmittance, and sunlight (water body is blocked at ten two points to ten four points
It is small, prevent the influence of too strong sunlight), and be covered in after hatching 11 days on outdoor nursery pond and reduce intensity of illumination.
Indoor raising of seedling pond is that size is 12m2, depth is the cement pit of 1.5m, and rain-tight, has light and gas charging stone to increase
Oxygen.
Outdoor nursery pond is used to cultivate grouper seedling with cultivating fresh algae water (the cultivation algae that later stage nursery pond needs to change
Water), indoor raising of seedling pond is transferred to indoor culture by outdoor for the seedling later stage and uses.
Separately prepare a small-power water pump, for ease of the seawater of fresh pretreatment and the calling of fresh algae water.
The mode that seawater is pre-processed in step (1) includes husky filter, sterilization, disinfection and aeration, detailed process and is recommended as：
Seawater is all injected in nursery pond after sand filter precipitation, strong chlorine oil sterilization, the disinfection for adding 25ppm (recommendation) (are first inflated
Turn off within one hour) 2 days, fully aeration two days, using whether chlorine residue is contained in chlorine residue kit measurement water body, can not make such as
With, if any using 15ppm sodium thiosulfate in standby use.
The mode of algae water is cultivated in step (1) to be included choosing pretreated seawater, adds concentration chlorella and prawn slice,
Cultivated under natural light, to final concentration of 1900~2400ppm of chlorella, as cultivating, algae water is stand-by；Detailed process is recommended as：
(a) the concentration chlorella of the addition 50ppm in the water after treated once a day, even adds 7 days；(b) addition three times per day
100ppm prawn slice, are cultivated under natural light, and chlorella is spare to its final concentration of 1900~2400ppm.
The process for setting in nursery pond incubation net cage to be used to hatch lithosporic fish fertilized egg indoors in step (1) is recommended as：
Hastened parturition grouper parent using HCG, artificial dry method insemination, it is 1.5m to be placed in size2Left and right, the incubation net cage that depth is 1m
In, hang in indoor hatchery, beat oxygen, to Lotic hatching, prevent that ammonia nitrogen amount is excessive.
Incubation net cage is recommended using flowing water, density as 500,000/m3Hatch lithosporic fish fertilized egg.
The high-quality lithosporic fry of 1~3 day is using density as 8000~16000 tails/m after hatching3Seawater is positioned over outdoor nursery
Pond.
, it is necessary to feed biological feed during seedling culture in step (2)~step (5), the biological feed includes
Live body seawater concentration chlorella, wheel animalcule, Copepods, chironomus larvas, fairy shrimp and fly maggot.
Wherein live body seawater concentration chlorella, fairy shrimp, chironomus larvas and fly maggot can directly launch use, wheel animalcule and oar foot
Class need to be launched after the reinforcing of the nutrient (eastern ball) of the unrighted acid rich in EPA, DHA and used.
The process that feeds of biological feed is recommended as：The 3rd~10 day after hatching, feed live body seawater concentration chlorella and
The wheel animalcule of the mesh sieve net of 200 mesh~150 is crossed, it is 10~15/mL to feed wheel animalcule density in rear nursery pond；Cultivate to the 11st~13
My god, feed the wheel animalcule of the mesh sieve net of 200 mesh~150 and crossed the Copepods of the mesh sieve net of 150 mesh~60, and feed wheel animalcule in rear nursery pond
Density is 5~10/mL, Copepods density is 3~5/mL；Cultivate to the 14th~30 day, fed the mesh sieve net of 150 mesh~60
Copepods, it is 5~10/mL to feed Copepods density in rear nursery pond；Cultivate to the 31st~33 day, fed 150 mesh~
The Copepods of 60 mesh sieve nets, more than 60 mesh fairy shrimp and chironomus larvas, one day 4~5 times, untill fed to appetite, cultivates to the 33rd day
Afterwards, fairy shrimp and fly maggot are fed, one day 4~5 times, untill fed to appetite.
In step (2)~step (5) during seedling culture, seedling of different sizes is separated using filter screen, specifically
Process is：
(a) it is the 1st~17 day after hatching, 1 mesh, 5 mesh filter screens and outdoor nursery pond is contour, first 5 mesh filter screens are close to
It is close to 5 mesh filter screens in the pool wall and bottom of pond of nursery pond, then by 1 mesh filter screen；
(b) the 17th day or so, 1 mesh filter screen is slowly moved up into 40~50cm, is killed each other with reducing size grouper；
(c) the 23rd day, size seedling is respectively put into different indoor raising of seedling ponds using 1 mesh, 5 mesh filter screens and continues to cultivate
To emergence.
Need to maintain water body system to stablize in outdoor nursery pond cultivating process in step (2)~step (4), detailed process
For：Added in outdoor nursery pond after cultivating algae water and seedling, every five days seawater for bleeding off 10cm height in outdoor nursery pond, then
Add and cultivate algae water as replacement, while three times per day add concentration chlorella, prawn slice and viable bacteria, and keep outdoor nursery pond
Water body in dissolved oxygen content be no less than 4mg/L, ammonia-nitrogen content is no more than 0.7mg/L.
Detailed process is：Added in outdoor nursery pond after cultivating algae water and seedling, addition 50ppm beads three times per day
Algae, 200ppm prawn slice and 200mL viable bacterias；The every five days nursery seawater for bleeding off nursery pond 10cm height, add the new of cultivation
Fresh algae water (cultivating algae water) is replaced；Daily detection water body dissolved oxygen amount and ammonia-nitrogen content, dissolved oxygen amount keep 4mg/L, ammonia nitrogen
Content must not exceed 0.7mg/L, such as exceed, and should add fresh algae water in time and adjust；The initial density for wherein concentrating chlorella pushes away
Recommend as 10,000,000,000-200 hundred million/mL.
Need in nursery pond cultivating process to maintain water body system to stablize indoors in step (2), step (4) and step (5),
Detailed process is：Added indoors in nursery pond and cultivate algae water, treated to add into indoor raising of seedling pond 1~10 day of seedling, continue
Add and cultivate algae water, when adding seedling the 10th~13 day, be continuously added into pretreated seawater.
As a result：After 33 days, the grouper seedling that 4.5 ten thousand length are 2~3.5cm is cultivated altogether, and survival rate arrives
28%, higher than 5%~10% survival rate of usual method.Contrast such as table 1 below with the big pool or feed coefficient and cement pit：
Table 1：Different method for culturing seedlings grouper nursery situation data comparisons
| Method | Survival rate | Yield | Specific yield | Cultivate the time | Disease incidence | Operability | Stability |
| The big pool/feed coefficient | 0~10% | 30000/mu | 45 tails/m3 | 20~30 days | It is more | 5 people of ＞ | It is unstable |
| Cement pit | ＞ 20% | 1.5 ten thousand/pond | 600 tails/m3 | 35~38 days | It is few | 1~2 people | Stablize |
| The present embodiment method | ＞ 30% | 40,000/ponds of ＞ | 1200 tails/m3 | 30~35 days | It is few | 1~2 people | Stablize |
Embodiment 2
As different from Example 1, treat that seedling to the 23rd~30 day, is transferred to indoor raising of seedling by seedling culture in step (4)
In pond, illumination is carried out using fluorescent lamp, adjusting light intensity is 5000lx, and daily light application time is 10h；Treat that seedling is trained in step (5)
Educate to the 31st~35 day, adjusting light intensity is 5000lx, and daily light application time is 7h, is emerged after cultivating 36 days.
Embodiment 3
As different from Example 1, treat that seedling to the 23rd~30 day, is transferred to indoor raising of seedling by seedling culture in step (4)
In pond, illumination is carried out using fluorescent lamp, adjusting light intensity is 8000lx, and daily light application time is 8h；Step treats seedling culture in (5)
To the 31st~35 day, adjusting light intensity was 3000lx, and daily light application time is 8h, was emerged after cultivating 38 days.
Embodiment described above only expresses the several embodiments of the present invention, its description is more specific and detailed, but simultaneously
Cannot therefore it be construed as limiting the scope of the patent.It should be pointed out that come for those of ordinary skill in the art
Say, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the protection of the present invention
Scope.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (8)
- A kind of 1. method for controlling illumination to cultivate grouper fry, it is characterized in that comprising the steps of：(1) indoor raising of seedling pond and outdoor nursery pond are set, seawater is chosen and is pre-processed, and cultivates algae water, while is educated indoors Miao Chizhong sets incubation net cage to be used to hatch lithosporic fish fertilized egg；(2) the 3rd~10 day after hatching indoors in nursery pond, seedling is placed in outdoor nursery pond and is cultivated, light source is nature Sunlight；(3) seedling culture is treated to the 11st~22 day, and sunshade net is covered on outdoor nursery pond to reduce intensity of illumination；(4) treat that to the 23rd~30 day, seedling is transferred in indoor raising of seedling pond for seedling culture, illumination is carried out using fluorescent lamp, is adjusted Light intensity is 5000~8000lx, and daily light application time is 8~10h；(5) seedling culture is treated to the 31st~35 day, and adjusting light intensity is 3000~5000lx, and daily light application time is 7~8h, is cultivated Emerge after 35~38 days；, it is necessary to feed biological feed during seedling culture in step (2)~step (5), the biological feed includes live body Seawater concentration chlorella, wheel animalcule, Copepods, chironomus larvas, fairy shrimp and fly maggot；The process that feeds of the biological feed is：The 3rd~10 day after hatching, live body seawater concentration chlorella and mistake are fed The wheel animalcule of the mesh sieve net of 200 mesh~150, it is 10~15/mL to feed wheel animalcule density in rear nursery pond；Cultivate to the 11st~13 day, Fed the wheel animalcule of the mesh sieve net of 200 mesh~150 and crossed the Copepods of the mesh sieve net of 150 mesh~60, it is close to feed wheel animalcule in rear nursery pond It is 3~5/mL to spend for 5~10/mL, Copepods density；Cultivate to the 14th~30 day, fed the mesh sieve net of 150 mesh~60 Copepods, it is 5~10/mL to feed Copepods density in rear nursery pond；Cultivate to the 31st~33 day, fed 150 mesh~60 The Copepods of mesh sieve net, more than 60 mesh fairy shrimp and chironomus larvas, one day 4~5 times, untill fed to appetite, cultivates to after the 33rd day, Feed fairy shrimp and fly maggot, one day 4~5 times, untill fed to appetite.
- 2. the method that grouper fry is cultivated in control illumination according to claim 1, it is characterized in that：Described in step (1) Sea water preprocessing include husky filter, sterilization, disinfection and aeration, the algae water of cultivating includes choosing pretreated seawater, adds Chlorella and prawn slice are concentrated, are cultivated under natural light, to final concentration of 1900~2400ppm of chlorella, as cultivation algae water It is stand-by.
- 3. the method that grouper fry is cultivated in control illumination according to claim 1, it is characterized in that：By children in step (2) Seedling is placed in outdoor nursery pond when being cultivated, and it is the high-quality lithosporic fry/m of 8000~16000 tails to put seedling density3Seawater.
- 4. the method that grouper fry is cultivated in control illumination according to claim 1, it is characterized in that：Step treats stone in (2) Spot fish fertilized egg hatch indoors in nursery pond after the 3rd~10 day, when seedling being placed in outdoor nursery pond being cultivated, daily 12 ~14 points cover sunshade net to reduce intensity of illumination on outdoor nursery pond.
- 5. the method that grouper fry is cultivated in control illumination according to claim 1, it is characterized in that：Sunshade in step (3) The light transmittance of net is 70~80%.
- 6. the method that grouper fry is cultivated in control illumination according to claim 1, it is characterized in that：Step (2)~step (5) in during seedling culture, seedling of different sizes is separated using filter screen, detailed process is：(a) it is the 1st~17 day after hatching, 1 mesh, 5 mesh filter screens and outdoor nursery pond is contour, first 5 mesh filter screens are close to and are educated The pool wall and bottom of pond of Miao Chi, then 1 mesh filter screen is close to 5 mesh filter screens；(b) the 17th day, 1 mesh filter screen is slowly moved up into 40~50cm, is killed each other with reducing size grouper；(c) the 23rd day, size seedling is respectively put into different indoor raising of seedling ponds using 1 mesh, 5 mesh filter screens and continues to cultivate to going out Seedling.
- 7. the method that grouper fry is cultivated in control illumination according to claim 1, it is characterized in that：Step (2)~step (4) maintenance water body system is needed to stablize in outdoor nursery pond cultivating process in, detailed process is：Added in outdoor nursery pond After cultivating algae water and seedling, every five days seawater for bleeding off 10~15cm height in outdoor nursery pond, add and cultivate algae water conduct Replace, while three times per day add concentration chlorella, prawn slice and viable bacteria, and keep dissolved oxygen in the water body of outdoor nursery pond to contain Amount is no less than 4mg/L, and ammonia-nitrogen content is no more than 0.7mg/L.
- 8. the method that grouper fry is cultivated in control illumination according to claim 1, it is characterized in that：Step (2), step (4) need to maintain water body system to stablize in nursery pond cultivating process indoors and in step (5), detailed process is：Educate indoors Added in Miao Chi and cultivate algae water, treated to add into indoor raising of seedling pond 1~10 day of seedling, be continuously added into and cultivate algae water, add children During seedling the 10th~13 day, pretreated seawater is continuously added into.
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| CN109349173A (en) * | 2018-12-19 | 2019-02-19 | 陈俊如 | Improve the cultural method of grouper fry survival rate |
| CN112655624A (en) * | 2021-02-07 | 2021-04-16 | 渤海水产育苗(山东)有限公司 | Pollution-free shrimp fry cultivation method |
| CN112772490A (en) * | 2021-02-07 | 2021-05-11 | 渤海水产育苗(山东)有限公司 | Method for cultivating organic shrimp larvae |
| AU2021232694B2 (en) * | 2021-06-17 | 2023-11-02 | Hainan Green Algae World Biotechnology Co. Ltd | Method for hatching and culturing grouper using chlorella |
| CN113881569B (en) * | 2021-09-15 | 2024-06-04 | 广东海元农业科技有限公司 | Method for cultivating sea water chlorella in cement pond and method for cultivating grouper fries |
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| CN102257972A (en) * | 2010-05-29 | 2011-11-30 | 海南大学 | Industrial seedling raising method for epinephelus lanceolatus |
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