CN111248120B - Wild brown-spot cynoglossus semilaevis fry domestication method - Google Patents
Wild brown-spot cynoglossus semilaevis fry domestication method Download PDFInfo
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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
- A01K61/10—Culture of aquatic animals of fish
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K61/00—Culture of aquatic animals
- A01K61/10—Culture of aquatic animals of fish
- A01K61/13—Prevention or treatment of fish diseases
-
- 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
- A01K63/00—Receptacles for live fish, e.g. aquaria; Terraria
- A01K63/003—Aquaria; Terraria
-
- 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
- A01K63/00—Receptacles for live fish, e.g. aquaria; Terraria
- A01K63/04—Arrangements for treating water specially adapted to receptacles for live fish
-
- 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
- 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
- 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
- A01K63/00—Receptacles for live fish, e.g. aquaria; Terraria
- A01K63/04—Arrangements for treating water specially adapted to receptacles for live fish
- A01K63/045—Filters for aquaria
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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
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- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Marine Sciences & Fisheries (AREA)
- Animal Husbandry (AREA)
- Biodiversity & Conservation Biology (AREA)
- Zoology (AREA)
- Farming Of Fish And Shellfish (AREA)
- Physical Water Treatments (AREA)
Abstract
The invention discloses a wild brown-spot cynoglossus semilaevis fry domesticating device and method, comprising the following steps: a. the fish fry captured in the field water area is put into a medicated bath for disinfection before domestication; b. placing the sterilized healthy fish fries into a running water circulation domestication device; c. the water quality in the culture pond is properly adjusted; d. after the fries enter the pool, feeding baits according to the sizes of the fries; e. dividing the culture density of the fries in the growing period into pools according to the sizes of the fries; f. preventing and controlling fish fry domestication parasites; g. prevention and control of bacterial ulceration. The device comprises a plurality of pools with different functions, a central control system for comprehensively controlling the conditions in all pools, integrates high efficiency and environmental protection, is simple to operate, has clear cultivation data and high domestication efficiency, can be globally regulated and controlled after initial setting of a program, and can provide powerful support for the next step of artificial breeding and germplasm resource protection for the domestication and cultivation of wild brown-patch three-line cynoglossus.
Description
Technical Field
The invention relates to the field of fish culture, in particular to a method for domesticating fish fries of wild brown tongue sole.
Background
Brown-spot three-line tongue soleCynoglossus trigrammus) The Chinese medicinal materials belong to the genus Cynoglossus, the sub-order of the sole, the family of the cynoglossus, and the genus Cynoglossus of the three-line Cynoglossus, inhabit coastal, estuary and river, are often hidden at the bottom of sand or buried in sand, are common varieties in southeast coasts, are large in size, delicious in taste and high in price, and are popular with consumers at the current market price of 200-300 yuan/kg. In recent years, the marine environment is deteriorated and the marine environment is excessively caughtThe quantity of Cynoglossus semilaevis resources for brown spots in the east sea fishing ground is reduced sharply. The normal survival and propagation of the plant are greatly influenced, and species protection problems are increasingly concerned. The research on artificial breeding and cultivation of Guan Heban cynoglossus semilaevis is blank at home and abroad. The cynoglossus semilaevis is suitable for being developed into an industrial circulating water culture variety, and is also suitable for being developed into a comprehensive ecological culture variety in a coastal pond due to the characteristic of the wide salt and the high temperature resistance of the cynoglossus semilaevis. Therefore, cynoglossus semilaevis is a kind of cynoglossus semilaevis which needs to break through artificial breeding, and the most needed problem to be solved by breaking through artificial breeding is to realize artificial domestication and breeding of wild fries.
Disclosure of Invention
Aiming at the defects existing in the prior art, the invention provides a device and a method for domesticating wild brown-speckle three-line tongue sole, and provides a device and a method for circulating running water for domesticating wild brown-speckle three-line tongue sole aiming at living environment and habit of the wild brown-speckle three-line tongue sole, so as to realize high-efficiency and high-survival rate domestication.
In order to achieve the above purpose, the present invention provides the following technical solutions: a method for domesticating wild brown-spot cynoglossus semilaevis fries is characterized by comprising the following steps:
a. the fish fry captured in the field water area is put into a medicated bath for disinfection before domestication: the disinfection time is 10-15 minutes, and the components of the medicated bath liquid are as follows: 5mg/m iodine preparation, 200g/m 10% florfenicol and antibiotic chaperone;
b. putting the sterilized healthy fries into a running water circulation domestication device for domestication:
front 15d, water flow rate 5m/s;
after 15d of the time period,
before the fish fry grows to 8cm, the water flow speed is 3m/s,
after the fish fry grows to 8cm, the water flow rate in winter is 1m/s, the water flow rate in summer is 2m/s,
it should be noted that a biochemical cotton filter is paved at the bottom of the culture pond, and fine sand is paved at the bottom of the pond for the fish fries to perch and clean;
c. the water quality in the culture pond is properly adjusted: the water quality in the culture pond is regulated to be weakly alkaline soft water with the pH value of 7-8, the water temperature is controlled to be 15-20 ℃, the salinity is controlled to be 15-20 permillage, the illumination of the culture pond is controlled to be within 300 lm/square meter, and oxygenation equipment is arranged to ensure that the water-soluble oxygen in the pond is above 5 mg/L;
d. after the fries enter the pool, feeding baits according to the sizes of the fries: the cut clamworm is fed for the first time, and only the clamworm is fed below 8cm after the first time, and various shellfish meat and crab meat can be fed more than 8 cm;
e. the fish fry growing period is divided into pools according to the culture density of the fish fry:
the length is below 5 cm: 70-80 feet per square meter,
the length is 5cm-8 cm: 50 feet per square meter of the Chinese medicinal herb,
length is 8cm-12 cm: 30 feet per square meter of the Chinese medicinal herb,
length is 12cm-15 cm: 20 feet per square meter;
f. control of fish fry domestication parasites: transferring the fries to a fresh water tank respectively every 15d during the domestication period, soaking for 20-30 min according to the body type length, killing parasites, and ensuring the activity of the fries;
g. prevention and control of bacterial ulceration stalks: when bacterial ulcer occurs, erythromycin sterilization is firstly smeared on an affected part, then the circulatory system is temporarily closed, the water level in the pond is reduced under the condition that the fish fry is not influenced, and the medicine is used in the pond: after 120mg/L of nutgall and 240mg/L of myrobalan are applied for 30min each day for 3 days, the circulatory system is started and the flow rate is increased to 5m/s until the fries recover from recovery.
Furthermore, the fries caught in the step a are prevented from being injured as much as possible, so that the survival rate of post-domestication is improved.
The technical measures of the steps are as follows: the method for carrying out medicated bath disinfection from the capturing of the wild brown-spotted three-wire cynoglossus fries to the normal cultivation is obtained, the domestication device is utilized to regulate and control the oxygen content of circulating water of a running water cultivation pond to be 5mg/L, the water temperature to be 15-20 ℃, the salinity to be 15-20%o, the PH value to be 7-8, the flow speed to be 5m/s, the cultivation to be Chi Guangzhao lux, the fine sand to be paved at the bottom of the pond, the split cultivation according to the body type, the prevention and control of the periodic parasitic diseases and the like, and the requirements on the domestication of the wild brown-spotted three-wire cynoglossus fries are met.
The utility model provides a device is domesticated to wild brown spot three-line cynoglossus semilaevis fry, includes heat preservation big-arch shelter, well accuse system, a plurality of breed pond, a plurality of cistern, disinfection sedimentation tank, a plurality of valve pipeline, its characterized in that, breed pond, cistern, disinfection sedimentation tank communicate each other with the valve pipeline respectively, breed pond and valve pipeline junction sets up the filter screen, is provided with the quality of water regulation and control subassembly of being controlled by well accuse system between valve pipeline and the filter screen, it is used for gathering current quality of water information still to set up a plurality of sensors that are used for gathering and transmit for well accuse system in the breed pond, breed pond bottom of the pool face is provided with biochemical cotton filter, and has the pool bottom area of third to set up the fine sand that is 10 centimeters higher than the pool bottom surface at least.
According to the scheme, the domestication device with multiple culture ponds connected with the plurality of reservoirs is obtained, the running water circulation device is set with program control by a control system, current water quality is monitored through the set sensor, and water quality is regulated and controlled through the water quality regulating and controlling components formed by various instruments, so that the device is more suitable for domestication of target fishes.
Further, an air-floating water outlet device connected with the valve pipeline is arranged in the culture pond, and the air-floating water outlet device comprises an air bag, a water pipe, a traction rope and a filtering water outlet.
Through the scheme, the cultivation pond is further internally provided with the air-floatation water outlet device, the height of the air-floatation water outlet device is limited by the rope pulled by the cup of the air-floatation water outlet device, the air-floatation water outlet device is always floated on the water surface by the buoyancy of the air bag, and impurities floating on the water surface can be discharged through the filtering water outlet and the water pipe.
Further, the water quality regulating and controlling assembly at least comprises a plurality of oxygenation devices and constant temperature devices.
Furthermore, the fish fry sterilizing and cleaning device also comprises a medicinal bath pool which is independently arranged and used for sterilizing and cleaning the fish fry, and the fish fry can be periodically sterilized and cleaned in the independent medicinal bath pool.
Further, the disinfection sedimentation tank is provided with a purification device, and the purification device comprises an ozone generator, an ultraviolet sterilizer and a filtering purifier, and can purify and sediment water sources and circulating running water.
Further, the valve pipeline is an electronic valve and is controlled by a central control system.
Furthermore, the central control system also comprises a communication device which can timely push warning information to operators when the water quality in the pool changes or emergency occurs.
The beneficial effect of this scheme:
the device and the method of the invention improve the domestication survival rate of the wild brown-spot three-line tongue sole and achieve the aim of efficient cultivation by improving the water quality of the wild brown-spot three-line tongue sole by modifying the living environment and habit of the wild brown-spot three-line tongue sole and arranging fine sand at the bottom of the cultivation pond, enabling fish fries to pass through the fine sand, removing mucus and parasites on bodies, arranging a water quality regulation and control component behind a filter screen of each cultivation pond, regulating and controlling the current water quality in real time under the regulation of a central control system by the information collected by a sensor, discharging impurities such as dust floating on the water surface from the cultivation pond by an air-floating water outlet device in each cultivation pond, and periodically transferring the impurities to an independent medicated bath disinfection pond.
Drawings
FIG. 1 is a schematic view of the structure of the device of the present invention;
FIG. 2 is a schematic view of the structure of the culture pond of the invention;
fig. 3 is a schematic structural view of the air-floating water outlet device of the present invention.
Reference numerals: 1. a culture pond; 2. a medicated bath pool; 3. a filter screen; 4. a water pump; 5. an air floatation water outlet device; 51. an air bag; 52. a water pipe; 53. a traction rope; 54. filtering the water outlet; 6. a water quality control assembly; 8. a biochemical cotton filter; 9. fine sand; 11. a sensor; 12. a reservoir; 13. disinfecting a sedimentation tank; 14. a central control system; 15. a valve conduit; 16. a communication device; 17. a purifying device; 18. a water source; 19. a wastewater treatment zone.
Detailed Description
The present invention will be described in further detail with reference to fig. 1 to 3 and examples, but the present embodiment of the invention is not limited thereto.
Example 1:
a method for sample domestication of wild brown tongue sole fries comprises the following steps:
1. and (3) cultivation supporting facilities: a relatively independent culture pond 1 established by at least two tons of heat insulation materials is selected, a biochemical cotton filter 8 is paved at the bottom of the pond, fine sand 9 is paved in one third area of the bottom of the pond, the fine sand 9 is higher than the bottom of the pond by more than 10 centimeters, a water outlet and a water inlet are further formed in the culture pond 1, the water inlet is connected with a valve pipeline 15 and provided with a filter screen 3, a water quality regulating and controlling assembly 6 is arranged between the filter screen 3 and the valve pipeline 15, each culture pond 1 is further provided with an air floatation water outlet device 5 for discharging water surface impurities in a matching manner, a water reservoir 12 is respectively connected with a water outlet and a water inlet of the culture pond 1, the water reservoir 12 is connected with a disinfection sedimentation tank 13 through the valve pipeline 15 and is connected with a wastewater treatment area 19, the disinfection sedimentation tank 13 is provided with a purifying device 17 at a water source 18 and a circulating water inlet, the purifying device 17 comprises an ozone generator, a filtering purifier and other instruments, and an ultraviolet sterilizer is arranged to purify and sterilize water circulating source water.
2. And (3) water quality regulation: the optimal domestication water temperature obtained after experiments is 15-20 ℃, the salinity is 15-20 per mill, the PH value is 7-8, the oxygen content is above 5mg/L, the ambient light is 300Lux, and the water flow rate of the running water circulation is kept at 5m/s. The central control system 14 collects information through a sensor 11 arranged in the pond and controls the control of the current circulating water in the culture pond 1; the water circulation of the culture pond 1 is mainly powered by a water pump 4 controlled by a central control system 14, reserve water in a reservoir 12 is led into the culture pond 1, water in the culture pond 1 is led into the reservoir 12, the water level is kept and the water is continuously circulated under the action of a sensor 11 and the central control system 14, the water quality collected by the sensor 11 is controlled by the central control system 14 to start a water quality regulating and controlling component 6, running water in the water circulation is optimized, and old water is discharged to a waste water treatment area 19 for treatment and discharge on the premise that the water discharge function can be started to ensure the water quantity in the culture pond 1, and then the makeup water pretreated in a disinfection sedimentation pond 13 is led into; the pretreatment source water in the disinfection sedimentation tank 13 is filtered and purified continuously by purifying devices such as an ozone generator, an ultraviolet sterilizer, a filtering purifier and the like, and then is precipitated for at least one week and then is introduced into the water storage tank 12, wherein the ozone generator is started for more than 5 hours every day in the precipitation process, the ozone generator is kept stand for 12 hours after the last start, the clean water in the middle layer of the disinfection sedimentation tank 13 is introduced into the water storage tank 12 by a water pump after the precipitation, and the detection is carried out by the sensor 11, so that the water quality is ensured to enter into circulation after the water quality is closed; the water temperature in the culture pond 1 is detected in real time, once the temperature deviates from the setting, the constant temperature equipment is started immediately, the water pump 4 is used for assisting to accelerate or decelerate the water flow rate, the water temperature change is ensured to be within 2 ℃, if the PH value fluctuates, the PH value is changed by throwing an acid-base medicament into the reservoir 12 within the range of not more than 1, the water quality in the culture pond 1 is slowly corrected through water circulation, the process lasts for more than 12 hours, water is gradually changed, the adjustment range is ensured to be not more than 1 within 24 hours, the salinity is kept between 15 and 20 per mill, the adjustment is performed immediately after exceeding 2 per mill, the powerful oxygenation pump is used for continuously supplying oxygen for 24 hours, the dissolved oxygen is ensured to be more than 5mg/L, the instrument of the central control system is provided with a standby generator for continuous action under the unexpected condition, when the adjustment means cannot correct the water quality, the drainage function is started, and the water in the pond is replaced by not more than 20% per day.
3. Bait feeding and pond-separating cultivation: after the fries enter the pool, feeding baits according to the sizes of the fries: the cut clamworms are fed for the first time, and only the clamworms are fed for less than 8 centimeters after the first time, and various shellfish meat and crabs can be fed more than 8 centimeters;
the fish fry growing period is divided into pools according to the culture density of the fish fry:
the length is below 5 cm: 70-80 feet per square meter,
the length is 5-8 cm: 50 feet per square meter of the Chinese medicinal herb,
the length is 8-12 cm: 30 feet per square meter of the Chinese medicinal herb,
the length is 12-15 cm: 20 feet per square meter.
4. Medicated bath, disinfection, cleaning and disease prevention and control: the wild cynoglossus semilaevis fries usually contain a plurality of microorganisms which cause the reduction of the culture survival rate, such as parasites, so that the cynoglossus semilaevis fries must be subjected to medicated bath disinfection for 10-15 minutes, and the medicated bath comprises the following components: 5mg/m iodine preparation, 200g/m 10% florfenicol and antibiotic chaperone; placing the mixed medicated bath into a medicated bath pool 2, transferring the fries into the medicated bath pool 2, quickly transferring the fries into a transfer pool for cleaning after the time is up, placing the fries into a culture pool 1 for culture, spraying 0.1ppm potassium permanganate, 1ppm iodine preparation and 1ppm terramycin into the culture pool 1 after the fries are placed into the pool, removing circulating water for 25% after 24 hours, gradually diluting the medicines for several days, transferring the fries into a fresh water pool respectively every 15 days during the growth period, and killing parasites and partial bacteria by adopting a salinity difference mode; when the prevention and control of bacterial ulcer occurs, erythromycin sterilization is firstly smeared on an affected part, then the circulatory system is temporarily closed, the water level in the pond is reduced under the condition that the fish fry is not influenced, and the medicine is used in the pond: after 120mg/L of nutgall and 240mg/L of myrobalan are applied for 30min each day for 3 days, the circulatory system is started and the flow rate is increased to 5m/s until the fries recover from recovery.
By the method for domesticating the wild brown-spotted three-line tongue sole fries, the survival rate of the wild brown-spotted three-line tongue sole fries is improved, the domestication efficiency is improved, and the daily physical work of management staff is lightened.
Example 2:
a device for domesticating fish fries of wild brown-spotted three-line cynoglossus semilaevis is globally controlled by a central control system 14, and further comprises a plurality of culture ponds 1, a plurality of water reservoirs 12, a disinfection sedimentation pond 13 and a plurality of valve pipelines 15 which are mutually connected and are constructed by heat insulation materials, wherein the specific connection arrangement and functions are as follows, the culture ponds 1, the water reservoirs 12 and the disinfection sedimentation pond 13 are respectively communicated with each other by the valve pipelines 15, a filter screen 3 is arranged at the joint of the culture pond 1 and the valve pipelines 15, a water quality regulating and controlling component 6 is arranged between the valve pipelines 15 and the filter screen 3, the water quality regulating and controlling component 6 is integrated by an aerator, thermostatic equipment and the like and is responsible for correcting the water quality in the culture pond 1, a plurality of sensors 11 which are used for collecting the current water quality information and transmitting the current water quality information to the central control system 14 are also arranged in the culture pond 1, a biochemical cotton filter 8 is arranged at the bottom of the pond, fine sand 9 which is at least 10 cm higher than the bottom surface of the pond is arranged in a third area of the pond, each cultivating pond 1 is provided with an air-floating water outlet device 5 for discharging impurities on the water surface of the cultivating pond 1, a water storage pond 12 connected with the cultivating pond 1 is divided into a water storage pond 12 for water inlet and a water storage pond 12 for water outlet, the water storage pond 12 is respectively used for supplying water and draining water to the cultivating pond 1 in a water circulation system, the water storage ponds 12 are mutually communicated, sea area disinfection sedimentation tanks 13 are communicated, the disinfection sedimentation tanks 13 are provided with a water inlet and a water outlet, the water inlet is connected with one water outlet of the water storage ponds 12 and one water outlet connected with an external water source such as a tap water pipe, the water inlet is further provided with a purifying device 17 comprising an ozone generator, a filtering water purifier and the like, the disinfection sedimentation tanks 13 are also provided with an ultraviolet sterilizer and the like for sterilizing and deinsectization of water in the pond, a valve pipeline 15 is controlled by a central control system 14, and connect water pump 4, form controllable and stable water circulation system by water pump 4 work, and well control system 14 carries out the control through the sensor 11 that sets up so the pond internal water quality to be responsible for stabilizing water quality, after the uncontrollable change takes place for water quality, can also carry out artificial regulation and control and stop the damage through communication device 16 to managers propelling movement information.
The method for domesticating the cynoglossus semilaevis comprises the steps of designing and building a domesticating and matching facility, adjusting and controlling water quality in the domesticating process, feeding baits and the rest, and setting fine sand, feeding baits, introduction of cultivation density, proper water quality temperature, oxygen content, PH value, salinity and the like according to the habit of the cynoglossus semilaevis, so that the requirements of domesticating the cynoglossus semilaevis fries in wild brown spots are met, stable conditions are provided for the growth of the cynoglossus semilaevis fries, healthy growth of the cynoglossus semilaevis fries is promoted, a set of method for the domesticating points of the cynoglossus semilaevis is developed in the whole domesticating process, survival rate is improved, and the aim of efficient cultivation is fulfilled.
The foregoing description is only of the preferred embodiments of the invention, but it should be understood that the above description should not be taken as limiting the invention, and any modifications, equivalents, improvements, etc. within the design concept of the invention should be included in the scope of protection of the invention.
Claims (2)
1. A method for domesticating wild brown-spot cynoglossus semilaevis fries is characterized by comprising the following steps:
a. the fish fry captured in the field water area is put into a medicated bath for disinfection before domestication: the disinfection time is 10-15 minutes, and the components of the medicated bath liquid are as follows: 5mg/m iodine preparation, 200g/m 10% florfenicol and antibiotic chaperone;
b. putting the sterilized healthy fries into a running water circulation domestication device for domestication:
front 15d, water flow rate 5m/s;
after c.15d the time period from the start of the process,
before the fish fry grows to 8cm, the water flow speed is 3m/s,
after the fish fry grows to 8cm, the water flow rate in winter is 1m/s, and the water flow rate in summer is 2m/s;
a biochemical cotton filter is paved at the bottom of the culture pond, and fine sand is paved at the bottom of the pond for the fish fries to perch and clean;
d. the water quality in the culture pond is properly adjusted: the water quality in the culture pond is regulated to be weakly alkaline soft water with the pH value of 7-8, the water temperature is controlled to be 15-20 ℃, the salinity is controlled to be 15-20 permillage, the illumination of the culture pond is controlled to be within 300 lm/square meter, and oxygenation equipment is arranged to ensure that the water-soluble oxygen in the pond is above 5 mg/L;
e. after the fries enter the pool, feeding baits according to the sizes of the fries: the cut clamworm is fed for the first time, and only the clamworm is fed below 8cm after the first time, and various shellfish meat and crab meat can be fed more than 8 cm;
f. the fish fry growing period is divided into pools according to the culture density of the fish fry:
the length is below 5 cm: 70-80 feet per square meter,
the length is 5cm-8 cm: 50 feet per square meter of the Chinese medicinal herb,
length is 8cm-12 cm: 30 feet per square meter of the Chinese medicinal herb,
length is 12cm-15 cm: 20 feet per square meter;
g. control of fish fry domestication parasites: transferring the fries to a fresh water tank respectively every 15d during the domestication period, soaking for 20-30 min according to the body type length, killing parasites, and ensuring the activity of the fries;
h. prevention and control of bacterial ulceration: when bacterial ulcer occurs, erythromycin sterilization is firstly smeared on an affected part, then the circulatory system is temporarily closed, the water level in the pond is reduced under the condition that the fish fry is not influenced, and the medicine is used in the pond: after 120mg/L of nutgall and 240mg/L of myrobalan are applied for 30min each day for 3 days, the circulatory system is started and the flow rate is increased to 5m/s until the fries recover from recovery.
2. The method for domesticating wild brown-spotted tongue sole fries according to claim 1, wherein the fries captured in the step a are prevented from being injured, so as to improve the survival rate of post-domestication.
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| CN112293336A (en) * | 2020-12-07 | 2021-02-02 | 西藏自治区农牧科学院水产科学研究所 | Domestication system and method for adult wild cyprinus carpio |
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