A pseudo-undine hormone inducing culture device

Abstract

The utility model discloses a kind of pseudoestramine hormone induction breeding devices, including breeding pond, the side wall upper portion of breeding pond is equipped with water inlet, water inlet is connected with water supply device by water inlet pipe;Liquid medicine adding device is equipped on the water inlet pipe, the liquid medicine adding device is communicated in the water inlet pipe, for introducing liquid medicine into the water inlet pipe and after mixing with water, it enters the breeding pond through the water inlet;The side wall of the breeding pond is equipped with drain, drain is equipped with drain control valve, the vertical height of drain distance the bottom of the breeding pond is 45% to 55% of the total water depth of the breeding pond;Liquid medicine adding device is directly set on water inlet pipeline, metering pump proportionally continuously injects liquid medicine into water inlet pipe, so that liquid medicine and water are mixed in advance in pipeline, and then enter the breeding pond together.

Description

Technical Field

[0001] This invention relates to a pseudo-female hormone-induced aquaculture device, belonging to the field of aquaculture. Background Technology

[0002] In the fields of fish genetics and aquaculture, sex control technology is an important means to achieve all-male or all-female farming and improve the economic benefits of the industry. Taking the pufferfish genus as an example, since the gonads of male fish have higher food safety and economic value, promoting all-male farming has become a key direction for improving industry benefits. One of the core technical paths to achieve all-male breeding is to use estrogens such as 17β-estradiol (E2) for daily immersion treatment during the critical window period of fry development (such as 20 to 110 days after hatching) to induce sex reversal in genetically male individuals to obtain pseudo-females (individuals with XY genotype but female physiological behavior). These pseudo-females are then mated with normal males to obtain YY super-males, ultimately achieving large-scale production of all-male fry. The induction treatment cycle is usually as long as 90 days.

[0003] In current practice, ordinary breeding buckets, plastic basins, or cement pools are mostly used for manual drug administration and water changes, which has the following significant drawbacks: 1. The induction period is as long as 90 days, and about half of the water needs to be replaced every day to ensure water quality. However, after the traditional water change, the drug needs to be manually added again to the target concentration. The operation is cumbersome and the concentration of the drug solution fluctuates greatly during the water change, which affects the consistency of the hormone induction effect. Second, relying on manual and arbitrary addition of drugs results in fluctuating drug concentrations, making it difficult to ensure a stable drug concentration over a 90-day period. Third, the water temperature is difficult to keep constant during long-term treatment, and drastic fluctuations in water temperature will directly affect the hormone induction effect. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a pseudo-female fish hormone-induced breeding device to solve the problem.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: a pseudo-female fish hormone-induced aquaculture device, comprising a culture pond, The upper side wall of the aquaculture pond is provided with a water inlet, and the water inlet is connected to a water supply device through a water inlet pipe; The inlet pipe is equipped with a medicine addition device, which is connected to the inlet pipe and is used to introduce medicine into the inlet pipe, mix it with the inlet water, and then enter the aquaculture pond through the inlet. The side wall of the aquaculture pond is provided with a drain outlet, and a drain control valve is provided at the drain outlet. The vertical height of the drain outlet from the bottom of the aquaculture pond is 45% to 55% of the total water depth of the aquaculture pond. The aquaculture pond is equipped with an aeration and oxygenation device. Preferably, the drug solution adding device includes a drug solution storage tank and a metering pump, the inlet of the metering pump is connected to the drug solution storage tank, and the outlet of the metering pump is connected to the water inlet pipe.

[0006] Preferably, a static mixer is provided at the end of the water inlet pipe.

[0007] Preferably, the water supply device includes a heater, a temperature sensor, and a thermostat; the heater and the temperature sensor are disposed on the water inlet pipe or in the aquaculture tank, and the thermostat is electrically connected to the heater and the temperature sensor respectively.

[0008] Preferably, the drainage control valve is a solenoid valve, which is electrically connected to a timer controller to achieve timed automatic drainage.

[0009] Preferably, the aquaculture pond is equipped with a circulating water pump, with the inlet of the circulating water pump located at the bottom of the aquaculture pond and the outlet connected to the upper part of the aquaculture pond.

[0010] Preferably, the side wall of the aquaculture pond is provided with water level scale lines, which include a high water level line and a low water level line, with the low water level line corresponding to the upper edge of the drain outlet.

[0011] Preferably, the breeding pond is a circular pond with a diameter of not less than 100cm and a depth of not less than 140cm.

[0012] Preferably, the bottom of the aquaculture pond is flat or slightly conical, and a drain outlet is provided in the center of the bottom of the aquaculture pond, with a drain valve provided at the drain outlet.

[0013] Preferably, the aquaculture pond has a double-layer structure, including an inner layer and an outer layer, with an insulation interlayer between the inner and outer layers; the upper edge of the aquaculture pond is provided with a detachable escape-proof net cover, the mesh size of which is 1mm to 10mm.

[0014] Beneficial effects This invention directly installs the drug addition device on the water inlet pipe. The metering pump continuously injects the drug into the water inlet pipe in proportion, so that the drug and water are pre-mixed in the pipe before entering the breeding pond together. When draining, only about half of the old water is drained, leaving about half of the old water containing the drug in the pond. The new water already contains the drug with the same target concentration in the pond before entering the pond. Therefore, the drug concentration in the pond remains unchanged before and after water change, fundamentally solving the technical problem of concentration fluctuation caused by water change. The constant temperature water supply device enables precise temperature control of the incoming water, ensuring stable water temperature during the 90-day induction period and providing a constant growth environment for the sex reversal of the fish fry. The system uses a timer controller and solenoid valve to achieve automatic daily drainage and water replenishment. Water changing operations do not require manual intervention, which greatly reduces the intensity of manual labor during the 90-day cycle. Attached Figure Description

[0015] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings: Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of this utility model; Figure 2 This is a top view of Embodiment 1 of the present invention. Figure 3 This is a partial structural diagram of Embodiment 2 of the present invention.

[0016] Attached diagram labels: Aquaculture pond-1, Sewage outlet-11, Sewage valve-12, Inlet-2, Inlet pipe-3, Constant temperature water supply device-4, Heater-41, Temperature sensor-42, Thermostat-43, Drain outlet-5, Drainage control valve-6, Medicine addition device-7, Medicine storage tank-71, Metering pump-72, Dosing pipeline-73, Static mixer-13, Circulating water pump-14, Circulating water pipe-15, Aeration and oxygenation device-8, Air pump-81, Aeration disc-82, Escape prevention net cover-9, High water level line-10a, Low water level line-10b. Detailed Implementation

[0017] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0018] Example 1 Please see Figure 1 , Figure 2 This utility model provides a technical solution for a pseudo-female fish hormone-induced aquaculture device, comprising a culture pond 1. The culture pond 1 is circular, with a diameter of 100cm and a depth of 140cm. The pond walls and bottom of the culture pond 1 are made of polypropylene (PP) sheets through hot-melt welding. Polypropylene (PP) material has good corrosion resistance and aging resistance, and does not absorb hormone solutions, making it suitable for long-term contact with hormone solutions such as 17β-estradiol. The bottom of the culture pond 1 is a slightly conical bottom (slope of approximately 1% to 2%), with a drain outlet 11 in the center. A drain valve 12 is installed at the drain outlet 11 for periodically removing sediment from the bottom of the pond.

[0019] The aquaculture pond 1 has a water inlet 2 on its upper side wall, and the water inlet 2 is connected to a constant temperature water supply device 4 via a water inlet pipe 3. The constant temperature water supply device 4 includes a heater 41, a temperature sensor 42, and a temperature controller 43. The heater 41 and the temperature sensor 42 are installed on the water inlet pipe 3, and the temperature controller 43 is electrically connected to both the heater 41 and the temperature sensor 42. In use, the target water temperature is set to 24±1°C, and the temperature controller 43 automatically controls the start and stop of the heater 41 based on the real-time water temperature signal fed back by the temperature sensor 42 to achieve continuous constant temperature water supply.

[0020] A drain outlet 5 is provided in the middle of the side wall of the aquaculture pond 1. In this embodiment, the total designed water depth of the aquaculture pond 1 is 100cm (the high water level 10a is 100cm from the bottom of the pond), and the drain outlet 5 is located at a height of 50cm from the bottom of the pond, which is approximately 50% of the total water depth. A drain control valve 6 is installed at the drain outlet 5. The drain control valve 6 is a solenoid valve, and the solenoid valve is electrically connected to a timer controller. By setting the daily drain time through the timer controller, automatic timed draining can be achieved; when the water level drops to the low water level 10b (50cm from the bottom of the pond), the draining automatically stops, accurately draining approximately 50% of the water in the pond each time.

[0021] The inlet pipe 3 is equipped with a drug addition device 7, which is located behind the constant temperature water supply device 4. The drug addition device 7 includes a drug storage tank 71 for holding 17β-estradiol stock solution (e.g., a 100 mg / L stock solution) and a metering pump 72. The inlet of the metering pump 72 is connected to the drug storage tank 71, and the outlet is connected to the inlet pipe 3 via a dosing pipeline 73. The metering pump 72 is an adjustable flow peristaltic pump or a plunger metering pump, capable of precisely adjusting the dosing rate according to the target drug concentration and the water flow rate in the inlet pipe 3. After the drug solution is injected into the inlet pipe 3, it is pre-mixed with the incoming water before entering the aquaculture pond 1 through the inlet 2. To promote thorough and uniform mixing of the drug solution and the incoming water, a static mixer 13 is also installed behind the drug addition device 7 on the inlet pipe 3.

[0022] The aquaculture pond 1 is equipped with an aeration and oxygenation device 8. The aeration and oxygenation device 8 includes an air pump 81 located outside the aquaculture pond 1 and an aeration disc 82 located at the center of the bottom of the aquaculture pond 1. The air pump 81 is connected to the aeration disc 82 via an air pipe. The tiny bubbles generated by the aeration disc 82 not only provide sufficient dissolved oxygen for the fish fry in the pond, but also promote the circulation of water and the uniform distribution of the medicine solution.

[0023] The upper edge of the breeding pond 1 is equipped with an escape-proof net cover 9. The escape-proof net cover 9 is a detachable circular net cover with a mesh size of 2mm, which can effectively prevent fish fry from jumping out of the pond during the induction treatment without affecting the gas exchange between the inside and outside of the pond.

[0024] The side wall of the aquaculture pond 1 is equipped with water level markings, including a high water level line 10a (100cm from the bottom of the pond, i.e., the total designed water depth) and a low water level line 10b (50cm from the bottom of the pond), which makes it easy for operators to intuitively confirm the water level for water exchange and calculate the amount of water exchanged.

[0025] The aquaculture pond 1 is also equipped with a circulating water pump 14. The water inlet of the circulating water pump 14 is located at the bottom of the aquaculture pond 1, and the water outlet is connected to the upper part of the aquaculture pond 1 through a circulating water pipe 15. It is used to drive the water circulation in the pond and ensure a high degree of uniformity of the concentration of the medicine solution.

[0026] The working principle of water exchange and concentration maintenance: The timer controller starts the drain control valve 6 (solenoid valve) to open, and the water in the pool is discharged from the drain outlet 5. Since the drain outlet 5 is located in the middle of the pool (50cm from the bottom of the pool), when the water level drops to the upper edge of the drain outlet 5 (i.e., the low water level line 10b), the water will naturally stop draining due to gravity, and about 50% of the water will remain in the pool.

[0027] After drainage stops, the timer controller closes the drainage control valve 6 and simultaneously starts the constant temperature water supply device 4 and the metering pump 72.

[0028] The constant temperature water supply device 4 heats the new water to the target temperature (24±1°C) and sends it into the water inlet pipe 3. The metering pump 72 simultaneously injects 17β-estradiol mother liquor into the water inlet pipe 3 according to the set ratio. After the medicine solution and the incoming water are fully mixed in the static mixer 13, they are added into the aquaculture pond 1 through the water inlet 2.

[0029] Because the new water is premixed with the same target concentration of medication as the pool in the inlet pipe 3, the overall medication concentration in the pool remains constant during and after the new water is added. When the water level rises to the high water level line 10a (100cm from the bottom of the pool), the water supply and medication addition automatically stop, thus completing one automatic water change process.

[0030] Through the above-mentioned synergistic operation, it is possible to ensure that the drug concentration in the pond remains constant before and after water changes and during water changes, while changing about 50% of the water daily. This ensures that the fish fry are in a stable and precise drug exposure environment throughout the entire 90-day induction period.

[0031] Operating method: Transfer the fish fry that are about 20 days old after hatching to the breeding pond 1, add clean water heated to the target temperature by the constant temperature water supply device 4 to the high water level line 10a, and adjust the water temperature in the pond to maintain 24±1°C.

[0032] Based on the target concentration of the drug solution set in the existing experiments or production (such as 5 μg / L, 10 μg / L, or 15 μg / L), calculate and set the dosing flow rate of the metering pump 72 so that the concentration of the mixed drug solution in the inlet pipe 3 is equal to the target concentration in the pool. Turn on the aeration and oxygenation device 8 and the circulating water pump 14 to maintain high dissolved oxygen in the water and uniform dispersion of the drug solution.

[0033] Every day, the timer controller automatically starts draining water to the low water level line 10b (draining about 50% of the old water), and then automatically replenishes it with constant-temperature fresh water containing the same concentration of medicine to the high water level line 10a.

[0034] This process is automatically repeated daily, and the fish fry are continuously raised in the system for about 90 days (i.e., from 20 days old to 110 days old), which can complete the entire process of inducing pseudo-female fish with high efficiency and high quality.

[0035] Example 2 Combination Figure 3 As shown, the difference between this embodiment and embodiment 1 is that the dosing pipeline 73 of the drug addition device 7 is connected to the existing Venturi mixer installed on the water inlet pipe 3.

[0036] The Venturi mixer utilizes the localized negative pressure generated by the high-speed flow of water to automatically draw in the medication, eliminating the need for an additional metering pump. It relies entirely on the suction force of the Venturi tube to achieve automatic medication intake and online premixing. The medication storage tank 71 can be mounted above the aquaculture pond 1, relying on gravity for stable medication supply. This embodiment features a more compact structure, saving on power equipment costs, and is suitable for aquaculture scenarios with relatively moderate dosing accuracy requirements and high cost sensitivity.

[0037] Example 3 The difference between this embodiment and Embodiment 1 is that the aquaculture pond 1 adopts a double-layer structure, including an inner pond wall and an outer pond wall, with an insulation interlayer between the inner and outer layers. The insulation interlayer is filled with polyurethane foam material. The double-layer insulation structure can significantly reduce the heat exchange between the water in the pond and the external environment, effectively reducing the heating energy consumption of the constant temperature water supply device 4, and is especially suitable for use in aquaculture farms where the temperature difference between day and night is large or where a constant temperature workshop is not provided.

[0038] Furthermore, this embodiment features an enlarged pond size: the diameter of the rearing pond 1 is increased to 150cm, the depth is increased to 160cm, and the total designed water depth is 120cm; the drain outlet 5 is located 60cm from the bottom of the pond (approximately 50% of the total water depth). The enlarged pond volume can accommodate a higher density of fish fry rearing, meeting the needs of medium-scale pseudo-female fish induction production.

[0039] Example 4 The difference between this embodiment and embodiment 1 is that the existing static mixer 13 is not installed on the water inlet pipe 3, but a spray-type water inlet head is installed at the end of the water inlet pipe 3 above the aquaculture pond 1 (before entering the aquaculture pond).

[0040] The medicated water is delivered through inlet pipe 3 to the spray-type inlet head and then sprayed evenly into the aquaculture pond 1. The hydraulic dispersion effect during the spraying process promotes rapid mixing of the medicated solution with the existing water in the pond. This embodiment features a simpler pipeline structure, lower maintenance costs, and is suitable for aquaculture scenarios where the mixing uniformity requirement is moderate.

[0041] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims. Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A pseudo-female hormone-induced aquaculture device, comprising a culture pond, characterized in that: The upper side wall of the aquaculture pond is provided with a water inlet, and the water inlet is connected to a water supply device through a water inlet pipe; The inlet pipe is equipped with a medicine addition device, which is connected to the inlet pipe and is used to introduce medicine into the inlet pipe, mix it with the inlet water, and then enter the aquaculture pond through the inlet. The side wall of the aquaculture pond is provided with a drain outlet, and a drain control valve is provided at the drain outlet. The vertical height of the drain outlet from the bottom of the aquaculture pond is 45% to 55% of the total water depth of the aquaculture pond. The aquaculture pond is equipped with an aeration and oxygenation device.

2. The pseudo-female fish hormone-induced aquaculture device according to claim 1, characterized in that: The drug solution addition device includes a drug solution storage tank and a metering pump. The inlet of the metering pump is connected to the drug solution storage tank, and the outlet of the metering pump is connected to the water inlet pipe.

3. The pseudo-female fish hormone-induced aquaculture device according to claim 1, characterized in that: A static mixer is provided at the end of the water inlet pipe.

4. The pseudo-female fish hormone-induced aquaculture device according to claim 1, characterized in that: The water supply device includes a heater, a temperature sensor, and a thermostat; the heater and the temperature sensor are installed on the water inlet pipe or in the aquaculture tank, and the thermostat is electrically connected to the heater and the temperature sensor respectively.

5. The pseudo-female fish hormone-induced aquaculture device according to claim 1, characterized in that: The drainage control valve is a solenoid valve, which is electrically connected to a timer controller to achieve automatic drainage at set times.

6. The pseudo-female fish hormone-induced aquaculture device according to claim 1, characterized in that: The aquaculture pond is equipped with a circulating water pump, with the inlet of the circulating water pump located at the bottom of the aquaculture pond and the outlet connected to the upper part of the aquaculture pond.

7. The pseudo-female hormone-induced aquaculture device according to claim 1, characterized in that: The side wall of the aquaculture pond is provided with water level markings, including a high water level line and a low water level line, with the low water level line corresponding to the upper edge of the drain outlet.

8. The pseudo-female fish hormone-induced aquaculture device according to claim 1, characterized in that: The breeding pond is circular, with a diameter of not less than 100cm and a depth of not less than 140cm.

9. The pseudo-female fish hormone-induced aquaculture device according to claim 1, characterized in that: The bottom of the aquaculture pond is flat or slightly conical, and a drain outlet is provided in the center of the bottom of the aquaculture pond, with a drain valve at the drain outlet.

10. The pseudo-female fish hormone-induced aquaculture device according to claim 1, characterized in that: The aquaculture pond has a double-layer structure, including an inner layer and an outer layer, with an insulation interlayer between the inner and outer layers; the upper edge of the aquaculture pond is equipped with a detachable escape-proof net cover, the mesh size of which is 1mm to 10mm.

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