Ecological breeding system based on symbiosis of micropterus salmoides and snails

Abstract

The ecological breeding system comprises a pond body, slopes are arranged on the two sides of the inner wall of the pond body, sludge is arranged at the bottom of the pond body, fixing rods are fixedly connected to the tops of the slopes in an inserted mode, and floating ropes are arranged on the fixing rods. A plurality of floating balls are movably connected to the outer wall of the floating rope, a mounting rod is fixedly connected to the floating rope between the adjacent floating balls in a penetrating mode, a snail cage is connected to the mounting rod, the pond body is used for breeding largemouth basses, and the sludge and the snail cage are used for breeding snails. The water quality is improved through the biological synergistic effect, the blue-green algae outbreak risk is reduced, and the bait utilization rate and breeding benefits are improved.

Description

Technical Field

[0001] This utility model relates to the field of ecological aquaculture technology, and in particular to an ecological aquaculture system based on the symbiotic relationship between largemouth bass and snails. Background Technology

[0002] Largemouth bass is a freshwater fish with high economic value, but the traditional monoculture model has the following problems: (1) Water quality deterioration: High-density feeding leads to the accumulation of uneaten feed, eutrophication of the water body, frequent occurrence of blue-green algae, large water exchange volume, large amount of water conditioning products, increased cost and damage to water stability; (2) Disease risk: Environmental fluctuations caused by water exchange can easily induce fish stress response and thus induce bacterial diseases; (3) Resource waste: Uneaten feed is not fully utilized, feed utilization rate is low, and the overall benefits of aquaculture are limited.

[0003] In existing technologies, some farmers attempt to co-culture filter-feeding fish (such as silver carp and bighead carp) in largemouth bass farming to improve water quality. However, filter-feeding fish compete with largemouth bass for food, and their effectiveness in controlling uneaten food and cyanobacteria at the bottom is limited. Snails, as benthic organisms, have the ability to feed on uneaten food, organic debris, and algae, and can effectively control cyanobacteria levels. However, there is currently no optimized system for co-culturing largemouth bass and snails that can both prevent largemouth bass from preying on snails and achieve greater yields through symbiotic coexistence. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide an ecological aquaculture system based on the symbiosis of largemouth bass and snails, which improves water quality, reduces the risk of blue-green algae blooms, and increases feed utilization and aquaculture efficiency through biological synergy.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: an ecological aquaculture system based on the symbiotic relationship between largemouth bass and snails, comprising a pond body, with slopes on both sides of the inner wall of the pond body, silt at the bottom of the pond body, a fixed rod fixedly inserted at the top of the slope, a floating rope on the fixed rod, several floating balls movably connected to the outer wall of the floating rope, an installation rod fixedly connected through the floating rope between adjacent floating balls, and a snail cage connected to the installation rod. The pond body is used for raising largemouth bass, and the silt and snail cages are used for raising snails.

[0006] As a preferred embodiment, the main body of the pond has an area of ​​5 to 15 mu, a depth of 2.0 to 2.5 m, a slope ratio of 1:1 to 1.5, a silt thickness of 5 to 10 cm, and an aerator configured in the main body of the pond with a power of 1 kW / mu.

[0007] As a preferred embodiment, a sleeve is movably connected to the outer wall of the fixing rod, a rope fixing device is fixedly connected to the outer wall of the sleeve, and the floating rope is movably connected to the inside of the rope fixing device.

[0008] As a preferred embodiment, the bottom of the fixed rod is inserted into the top of the slope, and a hydraulic telescopic rod is fixedly installed on one side of the fixed rod. The bottom of the hydraulic telescopic rod is inserted into the top of the slope, and the output end of the hydraulic telescopic rod is fixedly connected to the sleeve.

[0009] As a preferred embodiment, the outer wall of the sleeve is provided with a first insertion hole, and the outer wall of the fixing rod is provided with a plurality of sets of second insertion holes. A connecting nut is movably connected inside the first insertion hole, and one end of the connecting nut is inserted into the inside of the second insertion hole.

[0010] As a preferred embodiment, a connecting rod is fixedly connected to the top of the mounting rod, a limit ball is fixedly connected to the top of the connecting rod, and an insert rod is fixedly connected to the bottom of the mounting rod.

[0011] As a preferred embodiment, a connecting block is movably connected to the bottom of the insertion rod, a support cylinder is fixedly connected to the bottom of the connecting block, a hydraulic lifting rod is fixedly connected to the bottom of the support cylinder, the snail cage is fixedly connected to the bottom of the hydraulic lifting rod, a plug-in cylinder is fixedly connected to the top of the connecting block, and the insertion rod is threadedly connected to the inside of the plug-in cylinder.

[0012] As a preferred embodiment, a first tension band is fixedly connected to one end of the connecting block, and a second tension band is fixedly connected to the other end of the connecting block. Both the first tension band and the second tension band have drainage holes at their ends away from the connecting block. The drainage holes of the first tension band and the second tension band are sleeved on the outer wall of the connecting rod and are located between the mounting rod and the limiting ball.

[0013] As a preferred embodiment, a connecting cylinder is fixedly connected inside the floating ball, and the connecting cylinder is movably connected to the floating rope.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] (1) Complementary ecological niches: snails act as "cleaners" to remove uneaten food and blue-green algae, while uneaten food and excrement of largemouth bass provide nutrients for snails, forming a material cycle;

[0016] (2) Reduce disease occurrence: After the snails are stocked, the water environment can be effectively improved, the frequency of water changes can be reduced, and the stable water quality can avoid environmental fluctuations caused by water changes, thereby reducing the probability of fish stress and bacterial diseases.

[0017] (3) Save aquaculture costs: The frequency of water changes is reduced, which can save more than 30% of water and reduce the amount of fish medicine used for water quality control and disease prevention by more than 10%. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the installation of the rope fixing device in this utility model;

[0020] Figure 3 This is a schematic diagram of the installation of the floating rope in this utility model;

[0021] Figure 4 This is a schematic diagram of the installation of the snail cage in this utility model;

[0022] The attached diagram is labeled as follows: 1. Pond body; 2. Slope; 3. Rope fastener; 4. Sleeve; 5. Fixing rod; 6. Hydraulic telescopic rod; 7. Floating rope; 8. Floating ball; 9. Connecting tube; 10. Mounting rod; 11. Connecting rod; 12. Limiting ball; 13. Insert rod; 14. Connecting block; 15. Inserting tube; 16. First tension band; 17. Second tension band; 18. Leakage hole; 19. Support tube; 20. Hydraulic lifting rod; 21. Screw cage; 22. Connecting nut; 23. First insertion hole; 24. Second insertion hole. Detailed Implementation

[0023] The present invention will be further described below with reference to specific embodiments. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and should not be used to limit the protection scope of the present invention.

[0024] Example:

[0025] like Figures 1-4 As shown, an ecological aquaculture system based on the symbiotic relationship between largemouth bass and snails includes a pond body 1. Slopes 2 are provided on both sides of the inner wall of the pond body 1. Silt is provided at the bottom of the pond body 1. A fixing rod 5 is fixedly inserted into the top of the slope 2. A floating rope 7 is provided on the fixing rod 5. Several floating balls 8 are movably connected to the outer wall of the floating rope 7. An installation rod 10 is fixedly connected through the floating rope 7 between adjacent floating balls 8. A snail cage 21 is connected to the installation rod 10. The pond body 1 is used for raising largemouth bass, and the silt and snail cage 21 are used for raising snails.

[0026] Furthermore, in the initial stage, snails are placed in snail cages 21 for cultivation. The mesh size of the snail cages 21 is smaller than that of the snails. After a period of time, the snails reproduce, and the reproduced snails fall from the mesh onto the silt to grow. The snails in the snail cages 21 can be sold to replace new snails after cultivation. During the process, the snails in the silt are harvested regularly, reducing harvesting work and improving efficiency.

[0027] Preferably, the area of ​​the main body of the pond 1 is 5 to 15 mu, the depth of the pond is 2.0 to 2.5 m, the slope ratio of the slope 2 is 1:1 to 1.5, the thickness of the silt is 5 to 10 cm, and the aerator is configured in the main body of the pond 1 with a power of 1 kW / mu.

[0028] Preferably, a sleeve 4 is movably connected to the outer wall of the fixing rod 5, a rope fixing device 3 is fixedly connected to the outer wall of the sleeve 4, and the floating rope 7 is movably connected to the inside of the rope fixing device 3.

[0029] Specifically, the two ends of the floating rope 7 are movably wrapped around the inside of the rope fixer 3, which makes it convenient for the floating rope 7 to be distributed above the water surface of the pond body 1, and also makes it convenient to collect the snail cages 21 from one end of the floating rope 7 to the other end when collecting them. The present invention fixes the two ends of the floating rope 7 so that the snail cages 21 can be collected in a regular manner to prevent them from getting tangled together.

[0030] More preferably, the bottom of the fixing rod 5 is inserted into the top of the slope 2, and a hydraulic telescopic rod 6 is fixedly installed on one side of the fixing rod 5. The bottom of the hydraulic telescopic rod 6 is inserted into the top of the slope 2, and the output end of the hydraulic telescopic rod 6 is fixedly connected to the sleeve 4.

[0031] More preferably, the outer wall of the sleeve 4 is provided with a first insertion hole 23, and the outer wall of the fixing rod 5 is provided with a plurality of sets of second insertion holes 24. A connecting nut 22 is movably connected inside the first insertion hole 23, and one end of the connecting nut 22 is inserted into the inside of the second insertion hole 24.

[0032] Specifically, the hydraulic telescopic rod 6 is connected to the outer wall of the fixed rod 5 by the sleeve 4. When the water level rises, the hydraulic telescopic rod 6 pushes the sleeve 4 to slide upward along the fixed rod 5. The user then takes one end of the connecting nut 22 and inserts it into the second insertion hole 24, causing the sleeve 4 to slide downward stably with the connection part of the fixed rod 5. By adjusting the installation height of the sleeve 4, the rope fixing device 3 is installed above the water surface and is not soaked in water, thus extending its service life.

[0033] Preferably, a connecting rod 11 is fixedly connected to the top of the mounting rod 10, a limiting ball 12 is fixedly connected to the top of the connecting rod 11, and an insert rod 13 is fixedly connected to the bottom of the mounting rod 10.

[0034] More preferably, the bottom of the insertion rod 13 is movably connected to a connecting block 14, the bottom of the connecting block 14 is fixedly connected to a support cylinder 19, the bottom of the support cylinder 19 is fixedly connected to a hydraulic lifting rod 20, the snail cage 21 is fixedly connected to the bottom of the hydraulic lifting rod 20, the top of the connecting block 14 is fixedly connected to a plug-in cylinder 15, and the insertion rod 13 is threadedly connected to the inside of the plug-in cylinder 15.

[0035] More preferably, one end of the connecting block 14 is fixedly connected to a first tension band 16, and the other end of the connecting block 14 is fixedly connected to a second tension band 17. The ends of the first tension band 16 and the second tension band 17 away from the connecting block 14 are provided with drainage holes 18. The drainage holes 18 of the first tension band 16 and the second tension band 17 are sleeved on the outer wall of the connecting rod 11 and located between the mounting rod 10 and the limiting ball 12.

[0036] Specifically, the snail cage 21 is connected to the bottom of the insertion rod 13 via the top thread of the top connecting block 14 and is installed on the floating rope 7. The first tension band 16 and the second tension band 17 are respectively sleeved on the top of the connecting rod 11 from both ends of the mounting rod 10, which can stably install the bottom support cylinder 19 at the bottom of the insertion rod 13. The first tension band 16 and the second tension band 17 wrap around the mounting rod 10 to make the installation more stable and play the role of secondary connection to prevent the snail cage 21 from falling off. During disassembly, the first tension band 16 and the second tension band 17 are first removed from under the limiting ball 12, and then the threaded connection block 14 is rotated to separate it from the insertion rod 13. Compared with the existing snail cage 21 installation by tying it to the floating rope 7 with a rope, this utility model is more convenient for the disassembly and installation of the snail cage 21, and the mounting rod 10 is fixedly installed on the floating rope 7, so the installation position will not be displaced due to the weight of the snail cage 21.

[0037] Preferably, a connecting cylinder 9 is fixedly connected inside the floating ball 8, and the connecting cylinder 9 is movably connected to the floating rope 7.

[0038] In practical implementation, the stocking density of largemouth bass in aquaculture is 2000-2500 fish / mu, with a size of 10-12.5g / fish. The fish are introduced into the pond 10-15 days before the snails are released. The snails selected are ringed snails. After the largemouth bass have stabilized, they are evenly released into the bottom silt and snail cages 21 in one go, with a density of 50kg / mu and a size of 2-4g / snail.

[0039] The ecological aquaculture system based on this utility model includes the following specific aquaculture methods:

[0040] (1) Pond preparation: Drain the pond water and sun-dry the pond for more than 15 days. Remove excess silt from the bottom of the pond. After the pond is cleaned, use 25-35 kg / mu of bleaching powder to dry-spread disinfectant, or use 100-150 kg / mu of quicklime to disinfect with water to kill wild fish and harmful bacteria.

[0041] (2) Biological stocking: First, release largemouth bass, and then release snails after the largemouth bass have adapted to the environment (about 10 days later);

[0042] (3) Feeding: Feed the largemouth bass with 3%-5% of its body weight as a special compound pellet feed for largemouth bass throughout the entire feeding period. The crude protein content is 46-49%. When the water temperature is above 10℃, start feeding twice a day, once at 10:00 am and once at 4:00 pm. When the water temperature is above 15℃, feed normally three times a day, once at 7:00 am, once at 11:00 am and once at 5:00 pm. Each feeding session should last about 30 minutes, until the largemouth bass stop competing for food.

[0043] (4) Water quality control: Water level control: Gradually increase the water level starting in April, maintaining it at 1.5m until early May. Add water every 10 days thereafter, adding 10-15cm each time, maintaining it at 1.8m until June. From July to mid-October, maintain a maximum water level of 2m at the pond mouth to provide ample water space for largemouth bass. Fertilization and water conditioning: Focus on fertilization in the early stages, and on conditioning in the later stages. Starting in May, use amino acid fertilizer paste, diatomaceous earth, and Bacillus subtilis every half month (3 times in total), controlling the transparency to 50cm to increase water fertility, increase natural food, and inhibit algae growth. From early July, use EM bacteria every 10-15 days in rotation. Microecological agents such as lactic acid bacteria, photosynthetic bacteria, and Bacillus are used to regulate water quality and maintain a water transparency of 40cm, creating a good aquatic ecological environment for the growth of largemouth bass. Aeration is added in a timely manner, with aerators running for 15 hours a day to ensure dissolved oxygen in the pond. Aerators are turned on in mid-to-late April, and from 21:00 to 7:30 the next morning in June and July. During the high-temperature season in August and September, in addition to normal operation at night, aerators should be turned on for 1-2 hours at noon to promote water flow and exchange. During the breeding period, the dissolved oxygen in the pond water should always be kept sufficient. In case of continuous rain or typhoons and other extreme weather, the aerators should be turned on earlier and turned off later to meet the dissolved oxygen requirements for the growth of largemouth bass.

[0044] (5) Disease prevention and control: Adhere to the principle of "prevention first, combined with treatment". After stocking the largemouth bass fry, administer Chinese herbal medicines such as Sanhuang powder to the feed every half month to prevent the occurrence of bacterial diseases. At other times, feed aquatic vitamin C, probiotics, etc. to improve the body's immunity and ensure liver and intestinal health. Regularly alternate the use of water conditioning products such as EM bacteria and Bacillus to improve the pond water environment, maintain a certain level of fertility and algae, and effectively prevent the occurrence of parasitic diseases such as Trichodina and Dactylogyrus. If diseased or dead fish are found, deal with them in time. The prevention and treatment drugs should meet the requirements of the latest version of "Aquaculture Drug Information Sheet 1 and 2".

[0045] (6) Daily management: Insist on patrolling the pond every day to monitor the feeding and activity of the largemouth bass and the water quality of the pond, and deal with any problems in a timely manner; regularly check the aquaculture production equipment and facilities to ensure normal operation and prevent escape; regularly conduct water quality testing, and adjust management measures according to the test results to ensure that harmful substances such as nitrite and ammonia nitrogen in the pond water do not exceed the standards;

[0046] (7) Harvesting and sales: In late September, largemouth bass that reach a size of 0.4 kg / tail or above will be sold by netting. The method of catching the big ones and leaving the small ones will be adopted and the sales will be completed before the end of November.

[0047] More specifically, taking a 6-mu pond as an example: On March 29th, 2000 largemouth bass per mu (11.1g / bear) were stocked; on April 10th, 50kg of snails per mu (3.8g / snail) were stocked; the process was as described above. Results: Over a 6-month breeding cycle, the average weight of largemouth bass was 607g / bear, with a survival rate of 83% and an average yield of 1009kg per mu; snails yielded 350kg per mu, resulting in an additional income of 900 yuan per mu. Water quality indicators: During the entire breeding period from April to September, five water quality indicators—suspended solids, pH, total phosphorus, total nitrogen, and permanganate index—were tested twice a month. All test results met the Jiangsu Provincial Local Standard "Pond Aquaculture Wastewater Discharge Standard" (DB32 / 4043-2021), and the incidence of blue-green algae decreased by 80%. Total profit increased by 8%-10%, with an average benefit of over 10,000 yuan per mu.

[0048] In summary, the ecological aquaculture system of this invention, which cultivates largemouth bass and snails in a symbiotic manner using the above-described method, has the following advantages:

[0049] (1) Feed recycling: The leftover feed and excrement of the largemouth bass are reused by snails, and the comprehensive utilization rate of feed is increased to more than 85%.

[0050] (2) Economic output superposition: The yield of snails can reach 200-300 kg per mu. Based on the market price of 3-4 yuan / kg, the income per mu will increase by 600-1200 yuan.

[0051] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. An ecological aquaculture system based on the symbiosis of Micropterus salmoides and Lamprotula leai, characterized by the fact that it comprises: Including pond body, the inner wall of pond body both sides is provided with slope, the bottom of pond body is provided with sludge, the top of slope is fixed and is inserted with fixed rod, the outer wall of the fixed rod is provided with floating rope, the outer wall of floating rope is movably connected with a plurality of floating balls, the floating rope between adjacent floating balls is fixedly connected with mounting rod, the mounting rod is connected with snail cage, the pond body is used for breeding large mouth bass, and the sludge and snail cage are used for breeding snails.

2. The ecological aquaculture system based on the symbiosis of Micropterus salmoides and Margarya cuneiformis according to claim 1, characterized in that: The area of the pond body is 5-15 mu, the pond depth is 2.0-2.5 m, the slope ratio of the slope is 1:1-1.5, the thickness of the sludge is 5-10 cm, and the oxygenator is configured according to the power of 1Kw / mu in the pond body.

3. The ecological aquaculture system based on the symbiosis of Micropterus salmoides and Margarya cuneiformis according to claim 1, characterized in that: The outer wall of the fixed rod is movably connected with a sleeve, the outer wall of the sleeve is fixedly connected with a rope fixator, and the floating rope is movably connected in the inner part of the rope fixator.

4. The ecological aquaculture system based on the symbiosis of Micropterus salmoides and Margarya cuneiformis according to claim 3, characterized in that: The bottom of the fixed rod is inserted into the top of the slope, one side of the fixed rod is fixedly installed with a hydraulic telescopic rod, the bottom of the hydraulic telescopic rod is inserted into the top of the slope, and the output end of the hydraulic telescopic rod is fixedly connected with the sleeve.

5. The ecological aquaculture system based on the symbiosis of Micropterus salmoides and Margarya cuneiformis according to claim 3, characterized in that: The outer wall of the sleeve is provided with a first insertion hole, the outer wall of the fixed rod is provided with a plurality of second insertion holes, the inner part of the first insertion hole is movably connected with a connecting nut, and one end of the connecting nut is inserted into the inner part of the second insertion hole.

6. The ecological aquaculture system based on the symbiosis of Micropterus salmoides and Margarya cuneiformis according to claim 1, characterized in that: The top of the mounting rod is fixedly connected with a connecting rod, the top of the connecting rod is fixedly connected with a limiting ball, and the bottom of the mounting rod is fixedly connected with a plug rod.

7. The ecological aquaculture system based on the symbiosis of Micropterus salmoides and Lamprotula leai according to claim 6, characterized in that: The bottom of the plug rod is movably connected with a connecting block, the bottom of the connecting block is fixedly connected with a supporting cylinder, the bottom of the supporting cylinder is fixedly connected with a hydraulic lifting rod, the snail cage is fixedly connected to the bottom of the hydraulic lifting rod, the top of the connecting block is fixedly connected with a plug-in cylinder, and the plug rod is screwedly connected to the inner part of the plug-in cylinder.

8. The ecological aquaculture system based on the symbiosis of Micropterus salmoides and Lamprotula leai according to claim 7, characterized in that: One end of the connecting block is fixedly connected with a first tension belt, the other end of the connecting block is fixedly connected with a second tension belt, the end parts, away from the connecting block, of the first tension belt and the second tension belt are all provided with leakage holes, the leakage holes of the first tension belt and the second tension belt are sleeved on the outer wall of the connecting rod and located between the mounting rod and the limiting ball.

9. The ecological aquaculture system based on the symbiosis of Micropterus salmoides and Margarya cuneiformis according to claim 1, characterized in that: The inner part of the floating ball is fixedly connected with a connecting cylinder, and the connecting cylinder is movably connected with the floating rope.

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