CN110199926B - Large-scale artificial breeding method for metapenaeus ensis - Google Patents
Large-scale artificial breeding method for metapenaeus ensis Download PDFInfo
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- CN110199926B CN110199926B CN201910381468.2A CN201910381468A CN110199926B CN 110199926 B CN110199926 B CN 110199926B CN 201910381468 A CN201910381468 A CN 201910381468A CN 110199926 B CN110199926 B CN 110199926B
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- 241000193830 Bacillus <bacterium> Species 0.000 claims description 6
- 241000186660 Lactobacillus Species 0.000 claims description 6
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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
- A01K61/50—Culture of aquatic animals of shellfish
- A01K61/59—Culture of aquatic animals of shellfish of crustaceans, e.g. lobsters or shrimps
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/80—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in fisheries management
- Y02A40/81—Aquaculture, e.g. of fish
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- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Marine Sciences & Fisheries (AREA)
- Zoology (AREA)
- Animal Husbandry (AREA)
- Biodiversity & Conservation Biology (AREA)
- Farming Of Fish And Shellfish (AREA)
Abstract
The invention discloses a large-scale artificial breeding method of metapenaeus ensis, which comprises the steps of treating water for raising seedlings, sterilizing a seedling raising field, introducing parent shrimps, accelerating the maturity of gonads of the parent shrimps, laying eggs, hatching and optimizing, feeding baits, adjusting salinity and sprouting. The invention provides a large-scale artificial breeding method of metapenaeus ensis, and the shrimp seedlings cultured by the method have the characteristics of high growth speed, no pathogenic antibody, high survival rate and good adaptability.
Description
Technical Field
The invention relates to a large-scale artificial breeding method of prawns, in particular to a large-scale artificial breeding method of metapenaeus ensis.
Background
The large-scale artificial breeding of the new prawns refers to the whole process of large-scale breeding of the new prawns under the condition of artificial control. At present, the research on artificial breeding of prawns mostly focuses on the breeding of litopenaeus vannamei, penaeus chinensis, penaeus monodon and the like, but the research on large-scale artificial breeding of metapenaeus ensis serving as an important native shrimp breed in China is rarely reported.
Disclosure of Invention
In order to realize the aim, the invention provides a large-scale artificial breeding method for metapenaeus ensis, and the shrimp fries cultured by the method have the characteristics of high growth speed, no pathogenic antibody, high survival rate and good adaptability.
The technical scheme of the invention is realized as follows:
a large-scale artificial breeding method for metapenaeus ensis comprises the following steps:
(1) treatment of water for seedling culture: precipitating seawater, filtering to reduce seawater turbidity to below 1ppm, and sterilizing seawater.
(2) Preparing a seedling raising field: the breeding field comprises a parent shrimp isolation and seed protection workshop, a spawning and seed protection workshop and a seedling breeding workshop, wherein a temperature balance pool and a parent shrimp breeding pool are arranged in the parent shrimp isolation and seed protection workshop, an incubation pool and a glass fiber reinforced plastic barrel are arranged in the spawning and seed protection workshop, and a seedling breeding pool is arranged in the seedling breeding workshop;
(3) and (3) disinfection of a seedling raising field: sterilizing the parent shrimp isolation and seed protection workshop, the spawning and seed protection workshop and the offspring seed breeding workshop;
(4) introduction of parent shrimps: the parent shrimp source of the new prawns is fishing in the sea area, after the parent shrimp is obtained, the parent shrimp is conveyed to a shrimp isolation and seed protection workshop by a parent shrimp belt and is put into the temperature balance tank for temperature balance, after the water temperature in the parent shrimp bag is balanced with the water temperature in the balance tank, the parent shrimp is marked and put into the parent shrimp culture tank, the parent shrimp and the pathogen are detected, and the parent shrimp carrying the pathogen is destroyed;
(5) mature promoting of gonad of parent shrimp: feeding clamworms, oysters or squids to the parent shrimps regularly, and changing water and absorbing dirt of the parent shrimp culture pond regularly, wherein the water changing amount is more than 90% so as to keep the cleanliness of the water body in the parent shrimp pond;
(6) spawning, hatching and optimizing: selecting female shrimps with mature gonads to be placed in the hatching pond, transferring the female shrimps to the glass fiber reinforced plastic barrel for light induction when the eggs of the female shrimps are hatched to nauplius larvae, selecting healthy and active nauplius larvae to obtain shrimp seedlings, and placing the shrimp seedlings into the seedling raising pond;
(7) feeding baits: putting different baits into the shrimp seeds at different stages;
(8) salinity regulation: fresh water is added into the seedling raising pond to reduce the salinity in the seedling raising pond;
(9) and (3) seedling emergence: and putting the shrimp seeds into a seedling emergence bag filled with water for seedling emergence, discharging air in the seedling emergence bag, oxygenating and sealing.
The invention is further set that the seedling field comprises a parent shrimp isolation and seed protection workshop, a spawning and seed protection workshop and a seedling breeding workshop, wherein heat supply equipment is arranged in the temperature balance pool, the parent shrimp cultivation pool, the hatching pool and the seedling cultivation pool, oxygen charging equipment, an inlet pipeline and a drainage pipeline are arranged in the temperature balance pool, the parent shrimp cultivation pool, the hatching pool and the seedling cultivation pool, the oxygen charging equipment comprises an oxygen charger and air stones, and the oxygen charger and the air stones are communicated through air guide pipes.
The invention is further set in that 1 fluorescent lamp of 30W is respectively arranged above the parent shrimp breeding pond, the photoperiod is adjusted to be 12-14 h illumination and 12-10 h darkness. The water depth in the parent shrimp culture pond is 40-60 cm, the air stones are uniformly distributed along the periphery of the inner wall of the pond, and the density of the air stones is 0.5-1 per square.
The invention is further set in that the water depths of the hatching pond and the seedling raising pond are 50-60 cm, a film pulling and supporting line for hanging air stones is arranged above the water of the seedling raising pond, and the density of the air stones is 0.5-1.
The invention is further provided with a black plastic film for shading light on the seedling raising pond.
The invention is further set to push the shrimp eggs periodically during the shrimp egg hatching period, keep the eggs in a suspension state, and push the eggs for 30-60 minutes.
The invention is further set that the bait comprises natural bait and artificial bait, the natural bait comprises monad and live bait, the monad is chaetoceros and golden algae live chlorella, the live bait is rotifer, and the artificial bait is shrimp slices.
By adopting the technical scheme, the invention has the beneficial effects that: the large-scale artificial breeding method for metapenaeus ensis provided by the invention has the characteristics of high growth speed, no pathogenic antibody carried by shrimp seedlings, high survival rate and good adaptability.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
A large-scale artificial breeding method for metapenaeus ensis comprises the following steps:
treatment of water for seedling culture: putting seawater into a sedimentation tank to remove suspended solids, reducing the turbidity of the seawater to below 15PPm, putting the settled seawater into a sand filter for filtering, further removing the suspended solids and colloidal substances, reducing the turbidity of the seawater to below 1PPm, filtering the seedling culture water filtered by the sand filter again by using a double-layer water filtering cotton bag, and adding methylene blue (0.01-0.015 g/m)3) Or strong chlorine (0.7-0.75 g/m)3) Killing protozoa and bacteria in the water in the pond, purifying the water quality and aerating for 24-48 hoursAfter the treatment, 8-10 g/m of water is sprinkled3The EDTA solution is used for complexing heavy metal ions in water, so that the salinity of the water for seedling culture is 25-30 per mill, the pH value is 8.0-8.5, and the temperature is 28-30 ℃.
Preparing a seedling raising field: the place of growing seedlings includes including parent shrimp keeps apart kind workshop, lay eggs and protects kind workshop, the seedling breeds the workshop, it includes parent shrimp keeps apart kind workshop to state the place of growing seedlings, lay eggs and protect kind workshop, all be equipped with the heating equipment in the seedling breeds the workshop, it includes the oxygenerator to oxygenate the equipment, the aerolith has the air duct intercommunication, be equipped with the temperature balance pond in the parent shrimp keeps apart kind workshop, the pond is cultivated to the parent shrimp, be equipped with hatching pond and glass steel bucket in the kind workshop of spawning, the seedling breeds and is equipped with in the workshop and educates the pond, the temperature balance pond, the pond is cultivated to the parent shrimp, the hatching pond, the pond all is equipped with the oxygenerator, advance pipeline and drainage pipe.
And (3) disinfection of a seedling raising field: the parent shrimp isolation and seed protection workshop, the spawning and seed protection workshop, the seed breeding workshop, facilities, inflation equipment, heat supply equipment and subsequent tools in the parent shrimp isolation and seed protection workshop, the spawning and seed protection workshop and the seed breeding workshop are cleaned and washed clean and can be used after strict disinfection and cleaning. The seedling breeding workshop can be sterilized by a formaldehyde fumigation method, and the using amount of formaldehyde is 8-10 ml per cubic meter. The seedling raising pond is cleaned by brushing after being disinfected by bleaching powder for one day, cleaned for later use after being disinfected by potassium permanganate or a chlorine-containing disinfectant solution with the effective chlorine concentration of 50-100 mg/L, and the air stone and the air guide tube are soaked by potassium permanganate or bleaching powder and the like before being used.
After the breeding field is disinfected, 1 30W fluorescent lamp is respectively arranged above the parent shrimp breeding pond, the photoperiod is adjusted to be 12-14 h illumination and 12-10 h darkness, the water depth in the parent shrimp breeding pond is 40-60 cm, air stones are uniformly distributed along the periphery of the inner wall of the pond and used for oxygenating water in the parent shrimp breeding pond, and the density of the air stones is 0.5-1 per square. The water depths of the hatching pond and the seedling raising pond are 50-60 cm, a film pulling and supporting line used for hanging air stones is arranged above the hatching pond and the seedling raising pond, the density of the air stones is 0.5-1 air stones per square, and a black plastic film used for shading is arranged on the seedling raising pond.
Introduction of parent shrimps: the parent shrimp source of the new prawns is fishing in the sea area, after the parent shrimp is obtained, the parent shrimp bag is conveyed to a shrimp isolation and seed protection workshop, the parent shrimp bag containing the parent shrimp is soaked in a potassium permanganate solution for a short time and is disinfected, then the parent shrimp bag is put into a temperature balance pool for temperature balance, when the water temperature in the parent shrimp bag is balanced with the water temperature in the balance pool, the parent shrimp is marked and is put into a parent shrimp culture pool, and the parent shrimp and pathogens are detected (including intestinal cytozoon, parahemolysis, white spot syndrome, infectious subcutaneous tissues and the like), so that the parent shrimp carrying the pathogens are destroyed;
mature promoting of gonad of parent shrimp: feeding the parent shrimps with clam worms, oysters or squids three times every day, wherein the feeding time is concentrated at night and is 17: 00. 22: 00. 4: 00. and changing water and absorbing dirt in the parent shrimp culture pond every morning, wherein the water changing amount is more than 90 percent, so as to keep the cleanliness of the water in the parent shrimp pond.
Spawning, hatching and optimizing: female shrimps with mature gonads are selected and placed in an incubation pool, the water body in the incubation pool is consistent with the method for treating the water for seedling cultivation, and the water temperature is 29-31 ℃. And in the afternoon 17: 00-18: 00, selecting female shrimps with mature gonads to be placed into an incubation pool for spawning, and picking the female shrimps back to the parent shrimp pool after spawning at 0-2 o' clock in the morning.
After the newly-hatched prawns eggs are incubated for 9-12 h, the nauplii begin to be incubated, and after the nauplii are ecdysed for 3 times (12-16 h after the prawns eggs are incubated), the oxygen charging of the incubation pool is stopped and the nauplii are collected. And pushing the shrimp eggs once about 30-60 min during the shrimp egg hatching period to keep the shrimp eggs in a suspension state, thereby being beneficial to improving the hatching success rate of the shrimp eggs.
Putting the collected prawns nauplii with the amount of new prawns into a 1000L glass fiber reinforced plastic barrel, performing light induction, selecting the larvae with good health and vitality, sterilizing by iodine solution, and putting the larvae into a fry breeding pond. The stocking density of the larvae is 10-30 ten thousand per square meter, and the shrimp eggs are hatched to nauplius larvae.
Feeding baits: putting different baits into the shrimp seeds at different stages; the bait types are natural bait and artificial bait, the natural bait comprises unicellular algae and live bait, the unicellular algae are chaetoceros and live chlorella of chrysophyceae, and the live bait is rotifer; the artificial baits are prawn slices, and the bait types and the feeding method are roughly as follows (calculated by 10 square meters and 200 ten thousand nauplii):
before nauplii become flea-shaped larvae, feeding unicellular algae with the concentration of about 10 ten thousand per ml in a seedling pool, and filtering the algae once by using a 300-mesh net when feeding the algae;
at the first stage of the flea larvae, the algae concentration in the pond is observed in the morning, and the flea larvae are fed appropriately, so that the algae concentration is kept about 10 ten thousand per ml, and in addition, the flea larvae are not fed with other algae;
flea larvae stage two, 14 noon: feeding the prawn slices for 4 hours for 1 time, filtering the prawn slices by a 300-mesh net once when feeding the algae, and uniformly splashing the prawn slices into a seedling pool to keep the concentration of the algae to be about 7.5 ten thousand per ml;
and in the third stage of the flea larvae, feeding the raw materials from the midnight of the day, splashing 50ml of bacillus and 100ml of lactobacillus for 1 time every day, rubbing the algae into water through a material rubbing net of 250 meshes when feeding the algae, uniformly splashing the algae into a seedling raising pool, and keeping the concentration of the unicellular algae to be about 7.5 ten thousand per ml.
First-stage mysid larvae: in the morning of 2: 00 starts to feed the rotifers and feeds the rotifers and the algae alternately. The algae are rubbed into water by a 200-mesh material rubbing net and evenly splashed into a seedling raising pool, the concentration of the unicellular algae is kept about 5 ten thousand per ml, and the daily feeding amount of the rotifers is as follows: 20-30/tail.
And (3) mysid larvae in the second stage: the algae are rubbed into water by a 200-mesh material rubbing net and evenly sprinkled into a seedling raising pond. The concentration of the unicellular algae is kept about 5 ten thousand per ml. Feeding amount of rotifers in daily time: 30-40/tail.
Mysid larvae three-stage: the algae are rubbed into water by a 160-mesh material rubbing net and evenly splashed into a seedling raising pool, the concentration of the unicellular algae is kept about 5 ten thousand per ml, and the daily feeding amount of the rotifers is as follows: 40-50/tail.
Shrimp larvae P1: the algae are rubbed into water by a 120-mesh material rubbing net, evenly splashed into a seedling raising pool, and fed by rotifers on a daily basis: 50-70 per tail.
Shrimp larvae P2: the algae are rubbed into water by a 100-mesh material rubbing net and evenly splashed into a seedling raising pool, and the daily feeding amount of rotifers is as follows: 60-80/tail.
Shrimp larvae P3: the frozen fairy shrimp is adopted to gradually replace rotifer, and 50ml of bacillus and 100ml of lactobacillus are splashed for 1 time every day. The algae are rubbed into water by a material rubbing net of 80 meshes, evenly splashed into a seedling raising pool, and the daily feeding amount of rotifers is as follows: 80-90 per tail (can be replaced by frozen fairy shrimp with the same mass).
Shrimp larvae P4: the algae are rubbed into water by a 40-mesh material rubbing net and evenly splashed into a seedling pool, and the daily feeding amount of the fairy shrimp is as follows: 8-10/tail.
The method for feeding the shrimps from the stage of the shrimps P4 to the stage before emergence is the same as the method, the feeding amount, the feeding frequency and the feeding time of the bacillus and the lactobacillus are unchanged, and the amount of the fairy shrimp is increased by about 1-2 per tail per period.
Salinity regulation: the salinity in the nursery pond is reduced by adding fresh water into the nursery pond, the salinity range of the prawns with the amount of fresh water is wide, the desalination needs to be carried out according to the actual salinity content of a water body in the natural environment where the prawns with the amount of fresh water grow, and if the salinity in the nursery pond is reduced from 28 per thousand to 2 per thousand, the desalination can be started 6-7 days before the emergence of seedlings (the stage of P4-P5). The salinity is reduced from 28 per thousand to 20 per thousand on the first day, the salinity is reduced from 20 per thousand to 12 per thousand on the second day, the salinity is reduced from 12 per thousand to 6 per thousand on the third day, the salinity is reduced from 6 per thousand to 3 per thousand on the fourth day, the salinity is reduced from 3 per thousand to 2 per thousand on the fifth day, and the salinity is stabilized to adapt to the salinity for 1-2 days. When desalting, the fresh water is required to be uniformly sprayed into the seedling culture pond, and the spraying speed of the fresh water is required to be slow.
And (3) seedling emergence: putting the shrimp seeds into a seedling emergence bag filled with water for seedling emergence, wherein the water in the seedling emergence bag is about 10L, discharging air in the seedling emergence bag, sealing after oxygenation, and putting a proper amount of activated carbon into the seedling emergence bag, wherein the density of each bag of the shrimp seeds during seedling emergence can be about 5-6 million, if the transportation distance is long or the temperature is high, the density of each bag of the shrimp seeds can be properly reduced, and meanwhile, the shrimp seeds are transported in a low-temperature (15-20 ℃) environment.
By adopting the technical scheme, the invention has the beneficial effects that: the large-scale artificial breeding method for metapenaeus ensis provided by the invention has the characteristics of high growth speed, no pathogenic antibody carried by shrimp seedlings, high survival rate and good adaptability.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (2)
1. A method for large-scale artificial breeding of metapenaeus ensis is characterized by comprising the following steps
(1) Treatment of water for seedling culture: precipitating and filtering seawater to reduce the turbidity of the seawater to below 1ppm and sterilizing the seawater;
(2) preparing a seedling raising field: the fry breeding field comprises a parent shrimp isolation and seed protection workshop, a spawning and seed protection workshop and a fry breeding workshop, wherein heat supply equipment is arranged in the parent shrimp isolation and seed protection workshop, the spawning and seed protection workshop and the fry breeding workshop, a temperature balance pool and a parent shrimp culture pool are arranged in the parent shrimp isolation and seed protection workshop, an incubation pool and a glass steel barrel are arranged in the spawning and seed protection workshop, a seedling breeding pond is arranged in the fry breeding workshop, the temperature balance pool, the parent shrimp culture pool, the incubation pool and the seedling breeding pool are respectively provided with an oxygenating device, an inlet pipeline and a drainage pipeline, the oxygenating device comprises an oxygenating machine and air stones, the oxygenating machine is provided with air guide pipes communicated with the air stones, 1 fluorescent lamp of 30W is respectively arranged above the parent shrimp culture pool, the light period is adjusted to be 12-14 h illumination, 12-10 h, the darkness in the parent shrimp culture pool is 40-60 cm, and the water depth in the air stones is uniformly distributed along, the density of the air stones is 0.5-1 air stone per square, an incubation pool and a glass fiber reinforced plastic barrel are arranged in the spawning and seed-protecting workshop, a seedling breeding pool is arranged in the seedling breeding workshop, the water depths of the incubation pool and the seedling breeding pool are 50-60 cm, a film pulling and supporting line used for hanging the air stones is arranged above the water of the seedling breeding pool, the density of the air stones is 0.5-1 air stone, and a black plastic film used for shading is further arranged on the seedling breeding pool;
(3) and (3) disinfection of a seedling raising field: sterilizing the parent shrimp isolation and seed protection workshop, the spawning and seed protection workshop and the offspring seed breeding workshop;
(4) introduction of parent shrimps: the method comprises the following steps that parent shrimps of the new prawns are harvested in the sea area, after the parent shrimps are obtained, parent shrimp bags are conveyed to a parent shrimp isolation and seed protection workshop and are placed into a temperature balance pool for temperature balance, after the water temperature in the parent shrimp bags is balanced with the water temperature in the balance pool, the parent shrimps are marked and are placed into a parent shrimp cultivation pool, pathogen detection is carried out on the parent shrimps, and the parent shrimps carrying pathogens are destroyed;
(5) mature promoting of gonad of parent shrimp: feeding clamworms, oysters or squids to the parent shrimps regularly, and changing water and absorbing dirt of the parent shrimp culture pond regularly, wherein the water changing amount is more than 90% so as to keep the cleanliness of the water body in the parent shrimp pond;
(6) spawning, hatching and optimizing: selecting female shrimps with mature gonads to be placed in the hatching pond, transferring the female shrimps to the glass fiber reinforced plastic barrel for light induction when the eggs of the female shrimps are hatched to nauplii, selecting the nauplii with good health and vitality to obtain shrimp seedlings, and placing the shrimp seedlings into the seedling raising pond;
(7) feeding baits: putting different baits into the shrimp seeds at different stages; the bait types are natural bait and artificial bait, the natural bait comprises unicellular algae and live bait, the unicellular algae are chaetoceros and live chlorella of chrysophyceae, and the live bait is rotifer; the artificial bait is prawn slices, and the bait type and the feeding method are as follows: calculated by every 200 million nauplii per square meter of 10 square meters:
before nauplii become flea-shaped larvae, feeding unicellular algae with the concentration of about 10 ten thousand per ml in a seedling pool, and filtering the algae once by using a 300-mesh net when feeding the algae;
at the first stage of the flea larvae, the algae concentration in the pond is observed in the morning, and the flea larvae are fed appropriately, so that the algae concentration is kept about 10 ten thousand per ml, and in addition, the flea larvae are not fed with other algae;
flea larvae stage two, 14 noon: feeding the prawn slices for 4 hours for 1 time, filtering the prawn slices by a 300-mesh net once when feeding the algae, and uniformly splashing the prawn slices into a seedling pool to keep the concentration of the algae to be about 7.5 ten thousand per ml;
in the third stage of the flea larvae, feeding materials from the midnight of the day, splashing 50ml of bacillus and 100ml of lactobacillus for 1 time every day, rubbing the algae into water through a material rubbing net of 250 meshes when feeding the algae, uniformly splashing the algae into a seedling raising pool, and keeping the concentration of the unicellular algae to be about 7.5 ten thousand per ml; first-stage mysid larvae: in the morning of 2: 00 feeding rotifers and feeding the rotifers and the algae alternately;
the algae are rubbed into water by a 200-mesh material rubbing net and evenly splashed into a seedling raising pool, the concentration of the unicellular algae is kept about 5 ten thousand per ml, and the daily feeding amount of the rotifers is as follows: 20-30/tail;
and (3) mysid larvae in the second stage: the algae are rubbed into water by a 200-mesh material rubbing net and evenly splashed into a seedling raising pool, and the concentration of the unicellular algae is kept about 5 ten thousand per ml;
feeding amount of rotifers in daily time: 30-40 per tail;
mysid larvae three-stage: the algae are rubbed into water by a 160-mesh material rubbing net and evenly splashed into a seedling raising pool, the concentration of the unicellular algae is kept about 5 ten thousand per ml, and the daily feeding amount of the rotifers is as follows: 40-50 per tail;
shrimp larvae P1: the algae are rubbed into water by a 120-mesh material rubbing net, evenly splashed into a seedling raising pool, and fed by rotifers on a daily basis: 50-70 per tail;
shrimp larvae P2: the algae are rubbed into water by a 100-mesh material rubbing net and evenly splashed into a seedling raising pool, and the daily feeding amount of rotifers is as follows: 60-80 per tail;
shrimp larvae P3: gradually replacing rotifers with frozen artemia, splashing 50ml of bacillus and 100ml of lactobacillus for 1 time every day, rubbing algae into water through a material rubbing net of 80 meshes, uniformly splashing into a seedling raising pool, and feeding rotifers daily: 80-90 rotifers per tail, wherein the rotifers can be replaced by frozen fairy shrimp with the same mass;
shrimp larvae P4: the algae are rubbed into water by a 40-mesh material rubbing net and evenly splashed into a seedling pool, and the daily feeding amount of the fairy shrimp is as follows: 8-10 per tail;
the method for feeding the shrimps from the P4 stage to the pre-emergence stage is the same as the method, the feeding amount, frequency and time of the bacillus and the lactobacillus are unchanged, and the amount of the fairy shrimp is increased by 1-2 per tail per period;
(8) salinity regulation: fresh water is added into the seedling raising pond to reduce the salinity in the seedling raising pond;
(9) and (3) seedling emergence: and putting the shrimp seeds into a seedling emergence bag filled with water for seedling emergence, discharging air in the seedling emergence bag, oxygenating and sealing.
2. The method for large-scale artificial breeding of metapenaeus ensis according to claim 1, which is characterized in that: and (3) periodically pushing the shrimp eggs during the shrimp egg hatching period, keeping the eggs in a suspended state, and keeping the egg pushing time interval between 30 and 60 minutes.
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| CN104982360A (en) * | 2015-06-23 | 2015-10-21 | 陈小昌 | Metapenaeus ensis cultivation method |
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| JP2018108075A (en) * | 2016-12-28 | 2018-07-12 | 日本水産株式会社 | Feeding device and feeding method and growing method using the same |
| WO2018191276A1 (en) * | 2017-04-11 | 2018-10-18 | Grand Shrimp, Llc | Aquaculture systems and methods |
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| CN104823883A (en) * | 2015-04-07 | 2015-08-12 | 高邮市阳光特种水产专业合作社 | Macrobranchium rosenbergii larvae breeding method |
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| JP2018108075A (en) * | 2016-12-28 | 2018-07-12 | 日本水産株式会社 | Feeding device and feeding method and growing method using the same |
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