CN113349128A - Industrial ecological breeding method of shrimp larvae with high stress resistance and disease resistance - Google Patents
Industrial ecological breeding method of shrimp larvae with high stress resistance and disease resistance Download PDFInfo
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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
- A01K61/50—Culture of aquatic animals of shellfish
- A01K61/59—Culture of aquatic animals of shellfish of crustaceans, e.g. lobsters or shrimps
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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
- A01K61/10—Culture of aquatic animals of fish
- A01K61/13—Prevention or treatment of fish diseases
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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
- A01K63/00—Receptacles for live fish, e.g. aquaria; Terraria
- A01K63/04—Arrangements for treating water specially adapted to receptacles for live fish
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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
- A01K63/00—Receptacles for live fish, e.g. aquaria; Terraria
- A01K63/04—Arrangements for treating water specially adapted to receptacles for live fish
- A01K63/042—Introducing gases into the water, e.g. aerators, air pumps
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23K—FODDER
- A23K10/00—Animal feeding-stuffs
- A23K10/20—Animal feeding-stuffs from material of animal origin
- A23K10/22—Animal feeding-stuffs from material of animal origin from fish
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23K—FODDER
- A23K10/00—Animal feeding-stuffs
- A23K10/20—Animal feeding-stuffs from material of animal origin
- A23K10/26—Animal feeding-stuffs from material of animal origin from waste material, e.g. feathers, bones or skin
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23K—FODDER
- A23K10/00—Animal feeding-stuffs
- A23K10/30—Animal feeding-stuffs from material of plant origin, e.g. roots, seeds or hay; from material of fungal origin, e.g. mushrooms
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23K—FODDER
- A23K50/00—Feeding-stuffs specially adapted for particular animals
- A23K50/80—Feeding-stuffs specially adapted for particular animals for aquatic animals, e.g. fish, crustaceans or molluscs
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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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/80—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in fisheries management
- Y02A40/81—Aquaculture, e.g. of fish
- Y02A40/818—Alternative feeds for fish, e.g. in aquacultures
Abstract
The invention relates to the technical field of marine product seedling breeding, and discloses an industrial ecological breeding method of shrimp seeds with high stress resistance and disease resistance, which comprises S1, breeding pond preparation, S2, shrimp seed breeding, S3, parent shrimp stocking, S4, breeding management, S5 and shrimp breeding. The industrial ecological breeding method of the shrimp seedlings with high stress resistance and disease resistance comprises the steps of carrying out concentrated intensive breeding selection on the shrimp seedlings, further selecting healthy high-quality shrimp seedlings with strong disease resistance, carrying out stocking, breeding management and shrimp breeding on parent shrimps in sequence, and carrying out immersion bathing on shrimp bodies with salt water before stocking the shrimp seedlings in stocking the parent shrimps to kill parasites and pathogenic bacteria, so that stress reaction of the shrimp seedlings can be relieved, physical strength of the shrimp seedlings can be recovered, regular water changing and quicklime splashing can be carried out in the breeding management, the physique of the shrimp seedlings can be effectively strengthened, calcium required by the shrimp seedlings in shelling growth can be provided, and the stress resistance and disease resistance of the shrimp seedlings are improved.
Description
Technical Field
The invention relates to the technical field of marine product seedling breeding, in particular to an industrial ecological breeding method of shrimp seedlings with high stress resistance and disease resistance.
Background
The prawn is popular as a high-quality marine product in domestic and foreign markets, the demand of the high-quality prawn product is increasing, and the prawn culture becomes the dominant industry of fishery in China and is an important way for the fishery industry in China to become rich. However, in recent years, due to continuous degradation of the quality of the cultured prawn variety, lack of excellent alternative varieties and lag of the breeding and breeding technology of the improved varieties, high-quality prawn seedlings are difficult to breed, and with the gradual deterioration of the water quality of the culture environment, extreme climates often appear, various diseases are caused frequently, the culture success rate of the prawn is low, and the culture benefit is extremely low. In order to improve the survival rate of the young shrimps in the process of raising the seedlings, the health of the young shrimps needs to be judged, so that the high-quality and healthy young shrimps are selected, and in addition, the stress resistance and the disease resistance of the young shrimps are also improved in the process of raising the seedlings, so that the success rate of prawn culture is improved, and the healthy and sustainable development of the prawn culture industry is promoted.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides an industrialized ecological breeding method of shrimp seeds with high stress resistance and disease resistance, which can effectively improve the survival rate of the shrimp seeds in the breeding process, judge the health of the shrimp seeds, select high-quality and healthy shrimp seeds, and improve the stress resistance and disease resistance of the shrimp seeds in the breeding process, thereby improving the success rate of prawn culture and promoting the healthy and sustainable development of prawn culture industry.
In order to realize the purpose of the industrial ecological breeding method of the shrimp seedlings with high stress resistance and disease resistance, the invention provides the following technical scheme: an industrialized ecological breeding method of shrimp larvae with high stress resistance and disease resistance comprises the following steps,
step one, preparing a culture pond:
(1) selecting a culture pond: the cultivating pond adopts a cement pond, the soil pond area is 3-5 mu, the cement pond length is 20-50 m, the pond bottom is flat, the pond stem-slope ratio is more than or equal to 1:2, the pond water depth is 50-80 cm, the pond is rectangular and arranged in the east-west direction, and the pond width is less than or equal to 40 m;
(2) pool cleaning treatment: feeding water to the highest water level, killing all prawns in a storage pool by using quick-acting pesticide such as diclodine, draining the water, cleaning the pool by using a high-efficiency disinfectant such as quick lime and the like through a dry method, insolating the bottom of the pool for a plurality of days while finishing the pool, and disinfecting a cement pool by using potassium permanganate for later use;
step two, shrimp fry cultivation:
(1) selecting a shrimp seed pool: the area of the shrimp seed pool is 1-3 mu, the slope ratio is 1:2, the water depth is 0.6-1 m, an escape-proof facility is added in the shrimp seed pool, and the pool cleaning treatment is the same as the pool cleaning treatment;
(2) b, fertilizer application: applying fermented organic fertilizer in the pond 10-15 days before stocking shrimp seedlings, wherein the application amount is 100-;
(3) stocking the shrimp larvae: the stocking amount of the young shrimps is 10-15 ten thousand tails per mu, the specifications of the young shrimps stocked in the same pond are consistent, and the young shrimps are put in the sunny morning or the cloudy day;
(4) shrimp larva breeding management: feeding ground soybean milk for 3-4 times a day after the 1 st week of stocking, starting at the 2 nd week, feeding minced small trash fish, mussel meat, slaughter leftovers and other animal feeds or special compound feeds for young shrimps as main materials, properly matching corn, wheat, fresh and tender plant stems and leaves and the like, mixing and crushing the mixture to obtain pasty baits, feeding the baits for 1 time in the morning and evening respectively, feeding the baits for 70 percent of daily bait amount in the evening, feeding the young shrimps for 0.25-0.4 kg in the early period, determining daily feeding amount according to about 10 percent of the weight of the shrimps in the pond, changing water for 1 time every 7-10 days in the process of breeding the young shrimps, changing water for 20-30 percent every time, using 1 time of lime for regulating water quality and increasing the content of calcium ions in the water every 15-20 days, using 10 kg/mu of lime, sprinkling the whole pool of hydrated pulp, timely starting oxygenation equipment, keeping the pool filled with oxygen, the intensified cultivation time is 25-30 days, the shrimp larvae exuviate for 5-8 times, the body length can reach about 3 cm, and then the shrimp larvae can be transferred to a mature shrimp pond for cultivation;
step three, stocking parent shrimps: selecting parent shrimps in 9-10 months or 3-4 months in the current year, wherein the selection requirement is that strong physique, strong activity, smooth body, complete appendages, no diseases or injuries and no attachments are selected from the shrimp seedlings cultured in the step two, the shrimp seedlings are more than 10 months old, the specification reaches 30-50 g/tail, and the male-female ratio is 3: 1 or 4: 1, the stocking density of parent shrimps is proper, the stocking density of the parent shrimps selected and remained in 9-10 months is generally 100-150 kg/mu, the stocking density of the parent shrimps selected and remained in 3-4 months is 80-100 kg/mu, meanwhile, partial silver carp and bighead carp are sleeved and placed to adjust the water quality, the stocking amount is 50-100 fish/mu, wherein the bighead carp is 15-30 fish, and the shrimp body is bathed by 3 percent of salt solution for 5-10 minutes before fry stocking so as to kill parasites and pathogenic bacteria;
step four, feeding management: feeding aquatic weeds, bean cakes, bran and compound feed in the feeding process, and properly feeding part of animal feed, such as minced conch meat, slaughter leftovers and the like, wherein the feeding is carried out for 1 time in the morning and evening of each day, the feeding is carried out for 1 time every 3 days in winter, the feeding is mainly carried out for evening, the feeding accounts for 70% of the daily feeding amount, the feeding amount in 3 months is 2% -3% of the weight of pond shrimps, the feeding amount in 4 months is 4% -5%, the feeding amount in 5 months is 6% -8%, the feeding amount in 10 months is 2% -3%, the water is changed for 1 time every 10-15 days in the parent shrimp cultivation period, the water is changed for 30% every time, the lime is used for 1 time every 20 days, and the using amount is about 10 kg/mu;
step five, prawn propagation: and in 4-5 months, controlling the water temperature to be more than 20 ℃, starting mating parent shrimps, enabling mating seasons to be 4-7 months, enabling the peak period of group mating to be 5 months, enabling fertilized eggs to hatch into young shrimps in the abdomen of female shrimps, enabling the hatching time to be 40-70 days, enabling the young shrimps to grow under the protection of a mother body after hatching, enabling the young shrimps to leave the mother body, enabling the young shrimps to actively eat and live independently.
Preferably, the quicklime is used by splashing the whole hydration slurry pool, adjusting the pH value to 7-8.5, and timely starting the oxygenation equipment to keep the water dissolved oxygen in the pool above 5 mg/L.
Preferably, after the young shrimps are hatched, when a large number of young shrimps are found in the breeding pond, the young shrimps are picked in time and put into the shrimp seedling pond for intensive cultivation.
Compared with the prior art, the invention provides an industrial ecological breeding method of shrimp seeds with high stress resistance and disease resistance, which has the following beneficial effects:
the industrial ecological breeding method of shrimp fries with high stress resistance and disease resistance includes intensive culture and selection of shrimp fries, selecting healthy high-quality shrimp fries with high disease resistance, stocking parent shrimps, breeding management and shrimp reproduction in sequence in the breeding process, and soaking the shrimp bodies in salt solution before stocking the fries in stocking the parent shrimps to kill parasites and pathogenic bacteria, relieve stress reaction of the shrimp fries and restore physical strength of the shrimp fries, regularly changing water and splashing quicklime in the breeding management, so that the physique of the shrimp fries can be effectively strengthened, calcium required by the shrimp fries in shelling growth can be provided, the stress resistance and disease resistance of the shrimp fries are improved, the success rate of shrimp breeding is improved, and the healthy sustainable development of the shrimp breeding industry is promoted.
Drawings
FIG. 1 is a schematic overall flow chart of the method of the present invention;
FIG. 2 is a schematic view of the preparation process of the cultivation pond according to the present invention;
fig. 3 is a schematic diagram of the shrimp fry breeding process of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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.
Referring to fig. 1-3, specific embodiments are given below: an industrial ecological breeding method of shrimp fries with high stress resistance and disease resistance comprises the following steps of S1, preparing a breeding pond: firstly, selecting a cultivation pond, wherein the cultivation pond adopts a cement pond, the soil pond area is 4 mu, the cement pond is 30 m in length, the pond bottom is flat, the pond stem-slope ratio is 1:2, the pond water depth is 80 cm, the pond is rectangular and is arranged in the east-west direction, and the pond width is 40 m; then, performing pool cleaning treatment, namely feeding water to the highest water level, completely killing the prawns stored in the pool by using medicines such as flash-lime and the like, then draining the water, performing dry-method pool cleaning by using high-efficiency disinfectants such as quick lime and the like, insolating the bottom of the pool for several days while trimming the pool, and sterilizing the cement pool by using potassium permanganate for later use; s2, shrimp fry cultivation: firstly, selecting a shrimp seed pool, wherein the area of the shrimp seed pool is 3 mu, and the slope ratio is 1:2, the water depth is 1 m, and escape-proof facilities are added in the shrimp seed pool; then fertilizer application is carried out: 15 days before the shrimp larvae are put in the pond, applying fermented organic fertilizer into the pond, and applying the fermented organic fertilizer, wherein the application amount is 150 kg/mu; and then, stocking the shrimp fries: the stocking amount of the young shrimps is 15 ten thousand per mu, and the young shrimps are put in the sunny morning or the cloudy day; finally, carrying out shrimp fry feeding management, feeding ground soybean milk for 4 times every day in the 1 st week after stocking, starting in the 2 nd week, feeding minced small trash fish together with corn and wheat, feeding for 1 time in the morning and evening, feeding 0.4 kg of the young shrimps in the early period every ten thousand days, determining daily feeding amount according to about 10% of the weight of the shrimps in the pond, changing water for 1 time every 10 days in the shrimp fry breeding process, changing water for 30% every time, adjusting water quality and increasing the content of calcium ions in water by using 1 time of raw lime every 20 days, sprinkling the whole pond of the hydrated slurry, timely starting an oxygenation device, keeping sufficient water-dissolved oxygen in the pond, strengthening the breeding time for 30 days, 5-8 times of shrimp fry shells, and realizing 3 cm of body sloughing, and then transferring the shrimp fries into a shrimp pond for breeding; s3, stocking parent shrimps: selecting parent shrimps in 10 months or 4 months in the year, wherein the selection requirements are that the shrimps cultured in the step two are selected to have strong physique, strong activity, smooth body, complete appendages, no diseases, no injuries and no attachments, the shrimp is more than 10 months old, the specification reaches 30-50 g/tail, and the male-female ratio is 3: 1 or 4: 1, dipping the shrimp bodies in 3 percent saline water for 5-10 minutes before stocking the seedlings to kill parasites and pathogenic bacteria; s4, feeding management: feeding aquatic weeds, bean cakes, bran, compound feed and the like to the prawns, properly feeding minced mussel meat, slaughter leftovers and the like, feeding the minced mussel meat, slaughter leftovers and the like for 1 time in the morning and at night each day, mainly feeding the minced mussel meat and slaughter leftovers at night, wherein the daily feeding amount accounts for 70%, changing water for 1 time every 15 days during the cultivation period of the parent prawns, changing water for 30% each time, using 1 time of raw lime every 20 days, the using amount of the raw lime is about 10 kg/mu, sprinkling the raw lime to a whole hydration slurry pond, adjusting the pH value to 8.5, timely starting an oxygenation device, keeping the water dissolved oxygen of the pond above 5 mg/L, and enabling the parent prawns to complete mating, egg holding and safe overwintering in a comfortable and happy environment; s5, prawn breeding: the egg holding amount of the prawns is about 500 plus 1500, the prawn is different according to the size of an individual, the embryo development is closely related to the water temperature, the water temperature is controlled to be more than 20 ℃ in 5 months, the parent prawns begin to mate, the mating season is 4-7 months, the peak period of group mating is 5 months, fertilized eggs are hatched into young prawns in the abdomen of the female prawns, the hatching time is 40-70 days, the young prawns are hatched and grow under the protection of a mother body and leave the mother body, active feeding and independent living can be realized, and when a large number of young prawns appear in a breeding pond, the young prawns are timely picked and put into a shrimp fry pond for intensive cultivation.
The working use process and the installation method of the invention are that when the industrial ecological breeding method of the shrimp fries with high stress resistance and disease resistance is used, concentrated intensive breeding selection is carried out on the shrimp fries, then the healthy high-quality shrimp fries with strong disease resistance are selected, then parent shrimp stocking, breeding management and prawn breeding are sequentially carried out in the breeding process, and during parent shrimp stocking, the shrimp bodies are soaked in salt solution before fry stocking to kill parasites and pathogenic bacteria, so that the stress reaction of the shrimp fries can be relieved, the physical strength of the shrimp fries can be restored, water is changed at regular time of breeding management and quicklime is splashed, the physique of the shrimp fries can be effectively strengthened, calcium required by the shrimp fries during shelling growth can be provided, the stress resistance and disease resistance of the shrimp fries can be further improved, the success rate of prawn breeding is improved, and the healthy sustainable development of the prawn breeding industry is promoted.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (3)
1. An industrialized ecological breeding method of shrimp larvae with high stress resistance and disease resistance is characterized in that: comprises the following steps of (a) carrying out,
step one, preparing a culture pond:
(1) selecting a culture pond: the cultivating pond adopts a cement pond, the soil pond area is 3-5 mu, the cement pond length is 20-50 m, the pond bottom is flat, the pond stem-slope ratio is more than or equal to 1:2, the pond water depth is 50-80 cm, the pond is rectangular and arranged in the east-west direction, and the pond width is less than or equal to 40 m;
(2) pool cleaning treatment: feeding water to the highest water level, killing all prawns in a storage pool by using quick-acting pesticide such as diclodine, draining the water, cleaning the pool by using a high-efficiency disinfectant such as quick lime and the like through a dry method, insolating the bottom of the pool for a plurality of days while finishing the pool, and disinfecting a cement pool by using potassium permanganate for later use;
step two, shrimp fry cultivation:
(1) selecting a shrimp seed pool: the area of the shrimp seed pool is 1-3 mu, the slope ratio is 1:2, the water depth is 0.6-1 m, an escape-proof facility is added in the shrimp seed pool, and the pool cleaning treatment is the same as the pool cleaning treatment;
(2) b, fertilizer application: applying fermented organic fertilizer in the pond 10-15 days before stocking shrimp seedlings, wherein the application amount is 100-;
(3) stocking the shrimp larvae: the stocking amount of the young shrimps is 10-15 ten thousand tails per mu, the specifications of the young shrimps stocked in the same pond are consistent, and the young shrimps are put in the sunny morning or the cloudy day;
(4) shrimp larva breeding management: feeding ground soybean milk for 3-4 times a day after the 1 st week of stocking, starting at the 2 nd week, feeding minced small trash fish, mussel meat, slaughter leftovers and other animal feeds or special compound feeds for young shrimps as main materials, properly matching corn, wheat, fresh and tender plant stems and leaves and the like, mixing and crushing the mixture to obtain pasty baits, feeding the baits for 1 time in the morning and evening respectively, feeding the baits for 70 percent of daily bait amount in the evening, feeding the young shrimps for 0.25-0.4 kg in the early period, determining daily feeding amount according to about 10 percent of the weight of the shrimps in the pond, changing water for 1 time every 7-10 days in the process of breeding the young shrimps, changing water for 20-30 percent every time, using 1 time of lime for regulating water quality and increasing the content of calcium ions in the water every 15-20 days, using 10 kg/mu of lime, sprinkling the whole pool of hydrated pulp, timely starting oxygenation equipment, keeping the pool filled with oxygen, the intensified cultivation time is 25-30 days, the shrimp larvae exuviate for 5-8 times, the body length can reach about 3 cm, and then the shrimp larvae can be transferred to a mature shrimp pond for cultivation;
step three, stocking parent shrimps: selecting parent shrimps in 9-10 months or 3-4 months in the current year, wherein the selection requirement is that strong physique, strong activity, smooth body, complete appendages, no diseases or injuries and no attachments are selected from the shrimp seedlings cultured in the step two, the shrimp seedlings are more than 10 months old, the specification reaches 30-50 g/tail, and the male-female ratio is 3: 1 or 4: 1, the stocking density of parent shrimps is proper, the stocking density of the parent shrimps selected and remained in 9-10 months is generally 100-150 kg/mu, the stocking density of the parent shrimps selected and remained in 3-4 months is 80-100 kg/mu, meanwhile, partial silver carp and bighead carp are sleeved and placed to adjust the water quality, the stocking amount is 50-100 fish/mu, wherein the bighead carp is 15-30 fish, and the shrimp body is bathed by 3 percent of salt solution for 5-10 minutes before fry stocking so as to kill parasites and pathogenic bacteria;
step four, feeding management: feeding aquatic weeds, bean cakes, bran and compound feed in the feeding process, and properly feeding part of animal feed, such as minced conch meat, slaughter leftovers and the like, wherein the feeding is carried out for 1 time in the morning and evening of each day, the feeding is carried out for 1 time every 3 days in winter, the feeding is mainly carried out for evening, the feeding accounts for 70% of the daily feeding amount, the feeding amount in 3 months is 2% -3% of the weight of pond shrimps, the feeding amount in 4 months is 4% -5%, the feeding amount in 5 months is 6% -8%, the feeding amount in 10 months is 2% -3%, the water is changed for 1 time every 10-15 days in the parent shrimp cultivation period, the water is changed for 30% every time, the lime is used for 1 time every 20 days, and the using amount is about 10 kg/mu;
step five, prawn propagation: and in 4-5 months, controlling the water temperature to be more than 20 ℃, starting mating parent shrimps, enabling mating seasons to be 4-7 months, enabling the peak period of group mating to be 5 months, enabling fertilized eggs to hatch into young shrimps in the abdomen of female shrimps, enabling the hatching time to be 40-70 days, enabling the young shrimps to grow under the protection of a mother body after hatching, enabling the young shrimps to leave the mother body, enabling the young shrimps to actively eat and live independently.
2. The industrialized ecological breeding method of the shrimp seeds with high stress resistance and disease resistance according to the fourth step of claim 1, which is characterized in that: the quicklime is used by sprinkling the whole hydration slurry in a pool, adjusting the pH value to 7-8.5, and timely starting an oxygenation device to keep the dissolved oxygen in the pool above 5 mg/L.
3. The industrialized ecological breeding method of the shrimp seeds with high stress resistance and disease resistance according to the fifth step of claim 1, which is characterized in that: after the young shrimps are hatched, when a large number of young shrimps are found in the breeding pond, the young shrimps are picked in time and put into a shrimp fry pond for intensive cultivation.
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| CN113841639A (en) * | 2021-09-12 | 2021-12-28 | 海南文森农业科技有限公司 | Breeding method for improving fry hatchability |
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