Murray cod parent fish spawning and hatching system
By designing a Murray cod spawning and hatching system, a top-to-bottom contact structure of egg-hanging nets and light-blocking components was adopted, combined with nano-aeration and sewage discharge devices. This solved the problem of difficult collection of fertilized eggs in existing hatching methods, improved spawning and hatching efficiency, and ensured the integrity of fish eggs and hatching rate.
Patent Information
- Application Number
- CN202520523443.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-24
- Publication Date
- 2026-02-10
- Estimated Expiration
- 2035-03-24
AI Technical Summary
Existing incubation and egg-laying methods make it difficult to collect fertilized eggs, which affects incubation efficiency.
A spawning and hatching system for Murray cod broodstock, comprising a spawning mechanism and a hatching mechanism, was designed. The system uses an egg-hanging net and a light-blocking component. The light-blocking component makes contact with the top of the egg-hanging net to form a spawning space. After spawning, the egg-hanging net is quickly transferred to the hatching tank. Combined with a nano-aeration pipe and a sewage discharge drive device, the hatching environment is optimized.
It improved the spawning and hatching efficiency of Murray cod broodstock, ensured the integrity and viability of the eggs, reduced operating costs, and increased the hatching rate and fry survival rate.
Smart Images
Figure CN223885995U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of fish egg hatching, specifically to a Murray cod spawning and hatching system. Background Technology
[0002] Artificial breeding of Murray cod is a complex but meticulous process involving multiple stages and careful management. The main farming methods for Murray cod include earthen pond culture and factory farming. Earthen pond culture is more common; the ponds don't need to be very large, but they must have a certain depth. The bottom of the pond is ideally bowl-shaped and equipped with a drainage system and aeration equipment. Before stocking, the water temperature needs to be adjusted, and the size of the fry must be ensured. The stocking density must be reasonable to provide sufficient space for the fry to grow.
[0003] In the aquaculture process, the selection and feeding of feed are also crucial. Murray cod require a high protein content in their feed, generally above 45%. Feeding should follow the principle of small, frequent meals, and adjustments should be made according to the weather and the fish's feeding behavior. At the same time, regular wastewater discharge and water quality management are necessary to ensure a good aquaculture environment.
[0004] When Murray cod spawn, the male digs a nest in the riverbed to attract the female. After spawning, the female leaves the nest, and the male guards the eggs and fry. After spawning, the fertilized eggs need to be collected manually and placed in specialized incubation equipment for hatching. Current incubation methods present difficulties in collecting fertilized eggs, affecting hatching efficiency. Utility Model Content
[0005] The purpose of this invention is to provide a Murray cod spawning and hatching system, which aims to improve the existing hatching and spawning methods that are difficult to collect fertilized eggs and affect hatching efficiency.
[0006] To achieve the above objectives, the present invention adopts the following technical solution:
[0007] A Murray cod spawning and hatching system includes a spawning mechanism and a hatching mechanism. The spawning mechanism includes an egg-hanging net and a light-blocking component. The light-blocking component includes a first plate and a second plate. One side of the first plate and the second plate are connected to each other, and the other side of the first plate and the second plate are respectively pressed onto the two sides of the egg-hanging net.
[0008] The incubation facility includes an incubation pool with at least one hanging rod and a hook attached to the hanging rod. The incubation pool accommodates an egg-hanging net, and the hook is attached to the top of the egg-hanging net.
[0009] Furthermore, the first plate and the second plate respectively include a first frame and a second frame, and both the first frame and the second frame are provided with a light-shielding film.
[0010] Furthermore, the light-shielding film is an HDPE geomembrane.
[0011] Furthermore, the included angle between the first frame and the second frame is 60°.
[0012] Furthermore, the mesh size of the egg-hanging mesh is 20 mesh.
[0013] Furthermore, the width of the first frame, the second frame, and the egg-hanging net is 600-1200mm, and the length of the first frame, the second frame, and the egg-hanging net is 1000-1600mm.
[0014] Furthermore, the width of the first frame, the second frame, and the egg-hanging net is 900 mm, and the length of the first frame, the second frame, and the egg-hanging net is 1300 mm.
[0015] Furthermore, the hatching pool is equipped with a sewage discharge pipe that connects the inside and outside of the hatching pool, and a sewage discharge drive device is provided on the internal opening of the sewage discharge pipe.
[0016] Furthermore, the incubation pool is equipped with nano-aeration pipes, which are connected to an external air supply device.
[0017] By adopting the above technical solution, this utility model has the following advantages compared with the prior art:
[0018] The two sides of the shading component contact the two sides of the egg-hanging net, forming a front and back opening spawning space. This allows the Murray cod broodstock to enter the spawning space more easily. The shading component blocks light from the spawning space, providing a suitable spawning environment for the Murray cod broodstock and facilitating spawning. Furthermore, the shading component and the egg-hanging net are in a contacting state and are not connected, allowing the egg-hanging net to be quickly transferred to the hatching tank after spawning, improving hatching efficiency. The hook is used to hang the top of the egg-hanging net, ensuring that the egg-hanging net is set vertically in the hatching tank, making full use of the depth space of the hatching tank and further improving hatching efficiency. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the Murray cod spawning and hatching system described in this utility model;
[0020] Figure 2 This is a side view of the Murray cod spawning and hatching system described in this utility model;
[0021] Figure 3This is a schematic diagram of the egg-hanging net structure of the Murray cod spawning and hatching system described in this utility model;
[0022] Figure 4 This is a schematic diagram of the hatching pool structure of the Murray cod spawning and hatching system described in this utility model;
[0023] Figure 5 This is a schematic cross-sectional view of the hatching pool of the Murray cod spawning and hatching system described in this utility model.
[0024] Explanation of reference numerals in the attached figures:
[0025] 1. Egg-laying mechanism; 11. Egg-hanging net; 12. Light-blocking component; 121. First plate; 1211. First frame; 122. Second plate; 1221. Second frame; 123. Light-blocking film; 13. Supporting rod;
[0026] 2. Hatching facility; 21. Hatching pool; 22. Sewage pipe; 23. Sewage discharge drive device; 24. Hanging rod; 241. Hook; 25. Nano-aeration pipe;
[0027] 3. Laying space. Detailed Implementation
[0028] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.
[0029] Additionally, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" are all based on the orientation or positional relationship shown in the accompanying drawings. They are merely for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element of this utility model must have a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0030] When an element is referred to as being "fixed to," "set on," or "contained on" another element, it can be directly on or indirectly on that other element. When an element is referred to as being "connected to," it can be directly connected to or indirectly connected to that other element.
[0031] Unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0032] Example
[0033] Please refer to Figure 1-5 As shown, this embodiment provides a Murray cod spawning and hatching system, including a spawning mechanism 1 and a hatching mechanism 2. Please refer to... Figure 1-3 As shown, the egg-laying mechanism 1 includes an egg-hanging net 11 and a light-blocking component 12. The light-blocking component 12 includes a first plate 121 and a second plate 122. One side of the first plate 121 and the second plate 122 are connected to each other, and the other side of the first plate 121 and the second plate 122 are respectively pressed onto the two sides of the egg-hanging net 11. Please refer to... Figure 4 and Figure 5 As shown, the incubation mechanism 2 includes an incubation pool 21, on which at least one hanging rod 24 is provided, and hooks 241 are hung on the hanging rod 24. The incubation pool 21 accommodates the egg-hanging net 11, and the hooks 241 are used to hang the top of the egg-hanging net 11. In this embodiment, there are six hanging rods 24, which are spaced apart along the width of the incubation pool 21.
[0034] The two sides of the light-blocking component 12 are in contact with the two sides of the egg-hanging net 11, forming a front and rear open spawning space 3, which facilitates the Murray cod broodstock to enter the spawning space 3. The light-blocking component 12 blocks the light from the spawning space 3, providing a suitable spawning environment for the Murray cod broodstock to spawn. Furthermore, the light-blocking component 12 and the egg-hanging net 11 are in a top-to-bottom state and are not connected, so that the egg-hanging net 11 can be quickly transferred to the hatching pond 21 after spawning, improving hatching efficiency. The hook 241 hangs on the top of the egg-hanging net 11, so that the egg-hanging net 11 is vertically set in the hatching pond 21, making full use of the depth space of the hatching pond 21 and further improving hatching efficiency.
[0035] Please refer to Figure 1-3As shown, the first plate 121 and the second plate 122 respectively include a first frame 1211 and a second frame 1221, both of which are provided with a light-shielding film 123. By setting the light-shielding film 123 on the rectangular frame to form the first plate 121 and the second plate 122, the amount of light-shielding component 12 used is reduced, thus reducing costs, while ensuring good light-shielding effect. Specifically, the light-shielding film 123 is an HDPE geomembrane. The HDPE geomembrane blocks light from the spawning space 3, giving the light-shielding component 12 good structural strength and preventing damage that would affect the light-shielding effect. At the same time, the HDPE geomembrane is not slippery and will not stick to the fish eggs, ensuring that the fish eggs can fall stably onto the egg-hanging net 11.
[0036] In this embodiment, the included angle between the first frame 1211 and the second frame 1221 is 60°, making the spawning space 3 a regular triangular prism shape. This ensures that the Murray cod broodstock avoids collisions with the light-shielding component 12 in the width and height directions, preventing them from affecting the spawning process. Furthermore, a support rod 13 is connected between the front bottom surfaces of the first frame 1211 and the second frame 1221. The support rod 13 provides support at the bottom of the first frame 1211 and the second frame 1221, ensuring the overall structural strength of the light-shielding component 12 and increasing its overall weight, ensuring that the light-shielding component 12 can stably contact the top of the egg-hanging net 11.
[0037] In this embodiment, the mesh size of the egg-hanging net 11 is 20 mesh. Murray cod eggs have a density greater than water, and their outer layer is coated with an adhesive substance. Eggs from the broodstock fall onto and adhere to the egg-hanging net 11. Controlling the mesh size of the egg-hanging net 11 to 20 mesh effectively traps the eggs while allowing water flow. This ensures the eggs are collected smoothly without leakage due to excessively large mesh openings, thus improving collection efficiency. A mesh size that is too low reduces damage to the eggs caused by friction and compression during collection, helping to maintain their integrity and viability and increasing hatching rate. A mesh size that is too high causes eggs to detach during transport through the egg-hanging net 11, affecting transport efficiency.
[0038] Furthermore, the widths of the first frame 1211, the second frame 1221, and the egg-hanging net 11 are all 600-1200 mm, and the lengths of the first frame 1211, the second frame 1221, and the egg-hanging net 11 are all 1000-1600 mm. In this embodiment, the widths of the first frame 1211, the second frame 1221, and the egg-hanging net 11 are all 900 mm, and the lengths of the first frame 1211, the second frame 1221, and the egg-hanging net 11 are all 1300 mm. Alternatively, the widths of the first frame 1211, the second frame 1221, and the egg-hanging net 11 can all be 600 mm or 1200 mm, and the lengths of the first frame 1211, the second frame 1221, and the egg-hanging net 11 can all be 1000 mm or 1600 mm. The Murray cod broodstock are 500-800mm long and 200-300mm wide. The spawning space 3 has a cross-section of 900mm in an equilateral triangle shape and a length of 1300mm. This ensures that the space can fully accommodate the broodstock to enter and exit for spawning. It avoids the space being too small, which would affect the spawning expectation of the broodstock entering the spawning space 3. At the same time, it avoids the space being too large, which would result in excessively large openings on both sides, affecting the light-blocking performance of the spawning space 3 and the spawning efficiency of the broodstock.
[0039] Please refer to Figure 4 and Figure 5 As shown, specifically, the hatching tank 21 is equipped with a sewage pipe 22, which connects the inside and outside of the hatching tank 21. A sewage discharge drive device 23 is installed at the internal opening of the sewage pipe 22. The sewage discharge drive device 23 drives the sewage and excrement in the hatching tank 21 into the sewage pipe 22, and then flows out of the hatching tank 21 through the sewage pipe 22, providing a good hatching environment for the internal space of the hatching tank 21.
[0040] Furthermore, the hatching tank 21 is equipped with nano-aeration pipes 25, which are connected to an external air supply device. The nano-aeration pipes 25 can rapidly increase oxygen levels in the water within the hatching tank 21, bringing it to a supersaturated state. This provides sufficient oxygen for the fish eggs, improving the hatching rate of fertilized eggs and the survival rate of larvae. The nano-aeration pipes 25 also impact the structure of the microbial community in the water and bottom sediment of the hatching tank 21, and, in conjunction with the wastewater discharge drive device 23, better remove sludge and other impurities, further improving water quality. This provides good water quality for the fish eggs, reducing the occurrence and spread of diseases, and increasing the hatching rate and the survival rate of larvae.
[0041] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.
Claims
1. A Murray cod spawning and hatching system, characterized in that, It includes an egg-laying mechanism and an incubation mechanism. The egg-laying mechanism includes an egg-hanging net and a light-blocking component. The light-blocking component includes a first plate and a second plate. One side of the first plate and the second plate are connected to each other, and the other side of the first plate and the second plate are respectively pressed onto the two sides of the egg-hanging net. The incubation facility includes an incubation pool with at least one hanging rod and a hook attached to the hanging rod. The incubation pool accommodates an egg-hanging net, and the hook is attached to the top of the egg-hanging net.
2. The Murray cod spawning and hatching system according to claim 1, characterized in that: The first plate and the second plate each include a first frame and a second frame, and both the first frame and the second frame are provided with a light-shielding film.
3. The Murray cod spawning and hatching system according to claim 2, characterized in that: The light-shielding film is an HDPE anti-permeability membrane.
4. The Murray cod spawning and hatching system according to claim 2, characterized in that: The angle between the first frame and the second frame is 60°.
5. The Murray cod spawning and hatching system according to claim 1, characterized in that: The mesh size of the egg-hanging mesh is 20 mesh.
6. The Murray cod spawning and hatching system according to claim 4, characterized in that: The width of the first frame, the second frame, and the egg-hanging net is 600-1200mm, and the length of the first frame, the second frame, and the egg-hanging net is 1000-1600mm.
7. The Murray cod spawning and hatching system according to claim 6, characterized in that: The width of the first frame, the second frame, and the egg-hanging net is 900 mm, and the length of the first frame, the second frame, and the egg-hanging net is 1300 mm.
8. The Murray cod spawning and hatching system according to claim 1, characterized in that: The hatching pool is equipped with a sewage discharge pipe that connects the inside and outside of the hatching pool. The sewage discharge pipe has a sewage discharge drive device installed at its internal opening.
9. The Murray cod spawning and hatching system according to claim 1, characterized in that: The incubation tank is equipped with nano-aeration pipes, which are connected to an external air supply device.