A device for cultivating a fancy carp

Abstract

The utility model relates to fish culture technical field provides a kind of brocade carp culture device. Wherein, brocade carp culture device includes incubator, feed system and lighting system. Incubator has water inlet and drain; feed system is used to supply liquid feed to incubator inside, and feed system includes distribution pipe and multiple atomization spray head. Distribution pipe is located inside incubator;Multiple atomization spray head is connected and is located in distribution pipe, and evenly arranged in the inside of box body;Lighting system is located inside incubator, for providing illumination for incubator inside. The utility model solves the individual with unique ornamental trait in the artificial propagation process of prior art's brocade carp, and there is obvious growth disadvantage, and its survival rate is significantly lower than ordinary individual, leading to the defect that brocade carp commodity rate is low, realize a kind of device and method that can improve the survival rate of brocade carp with unique ornamental trait, and the efficiency of brocade carp elite breeding work is further improved, and the variety improvement process is accelerated.

Description

Technical Field

[0001] This utility model relates to the field of fish farming technology, and in particular to a koi carp cultivation device. Background Technology

[0002] In the artificial breeding of koi, due to the high degree of hybridization, their offspring exhibit significant phenotypic segregation. Especially in the early selection stages, individuals with unique ornamental traits often show obvious growth disadvantages, placing them at a disadvantage in group competition. Their survival rate is also significantly lower than that of ordinary individuals, resulting in a low marketable koi rate, limited overall economic benefits, and severely impacting farmers' enthusiasm for production. Furthermore, this negative correlation between growth disadvantage and high ornamental value means that the most promising individuals often exhibit the worst survival adaptability, posing a significant obstacle to the selection of superior koi breeds and severely delaying the process of breed improvement. Utility Model Content

[0003] This utility model provides a koi breeding device to address the shortcomings of existing koi breeding processes where individuals with unique ornamental traits often exhibit significant growth disadvantages, placing them at a disadvantage in group competition and resulting in a significantly lower survival rate than ordinary individuals, leading to a low marketability rate for koi. The invention provides a device and method to improve the survival rate of koi with unique ornamental traits.

[0004] This utility model provides a koi carp cultivation device, comprising:

[0005] The incubator has a water inlet and a water outlet;

[0006] A feeding system for supplying liquid feed into the incubator, the feeding system comprising:

[0007] The feed distribution pipe is located inside the incubator;

[0008] Multiple atomizing nozzles are connected to the distribution pipe and are evenly distributed inside the box body;

[0009] A lighting system, located inside the incubator, is used to provide illumination inside the incubator.

[0010] According to the koi carp cultivation device provided by this utility model, the feeding system further includes:

[0011] A storage tank is used to store the liquid feed, and the storage tank is connected to the incubator via a feed pipe.

[0012] A water pump, located in the feed pipe, is used to transport the liquid feed into the incubator.

[0013] According to the present invention, a koi carp cultivation device is provided in which multiple cultivation boxes and feeding systems are arranged in parallel in a one-to-one correspondence.

[0014] The water inlets of the incubators are all connected in sequence through water supply pipes, which are used to inject water into the incubators.

[0015] The drain outlets of the incubators are all connected in sequence through drain pipes, which are used to discharge the liquid inside the incubators.

[0016] According to the present invention, a koi carp cultivation device is provided, wherein both the water supply pipe and the drain pipe are equipped with control valves.

[0017] According to the present invention, a koi carp cultivation device is provided, wherein the cultivation box includes:

[0018] The box body has an opening at its top;

[0019] The cover is detachably disposed at the opening, and the cover has a mesh structure.

[0020] According to the present invention, a koi carp cultivation device is provided in which a background cloth is provided inside the box body, and the background cloth is used to adjust the light color inside the box body.

[0021] The background cloth shall include at least black, blue, red, yellow and green colors.

[0022] According to the koi carp cultivation device provided by this utility model, it also includes:

[0023] A temperature control system is located inside the incubator and is used to regulate the temperature inside the incubator.

[0024] According to the koi carp cultivation device provided by this utility model, the upper layer of the background cloth is provided with a grading and screening system, the grading and screening system is used for grading and screening fish fry, and the grading and screening system includes:

[0025] Fine-mesh wire mesh cage, wherein the fine-mesh wire mesh cage is disposed on the upper layer of the background cloth;

[0026] A coarse-mesh wire mesh cage is placed on top of a fine-mesh wire mesh cage.

[0027] According to the present invention, a koi carp cultivation device is provided, wherein the box body is equipped with an aeration system.

[0028] This invention provides a koi carp rearing device that delivers liquid feed to various atomizing nozzles via a feeding system. The atomizing nozzles atomize the feed and spray it evenly within the rearing tank, enabling the koi to feed efficiently. The lighting system provides stable illumination, simulating natural light to promote koi growth. This invention ensures even feed distribution, preventing fry from clustering or piling up, reducing competition between individuals, improving fry uniformity and feed utilization, and minimizing slow growth in weak fry due to insufficient feeding competition, thus significantly increasing fry survival rate. Since patterned koi are small and less competitive for food during the fry stage, this invention reduces the feeding competition pressure on patterned koi, thereby increasing their survival rate. The marketability of koi is positively correlated with the survival rate of patterned koi, further improving the marketability of koi. Simultaneously, the lighting system in this invention can provide necessary lighting as needed, improving breeding efficiency. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of the overall structure of the koi carp cultivation device provided by this utility model.

[0031] Figure 2 This is a partial structural schematic diagram of the koi carp cultivation device provided by this utility model.

[0032] Figure 3 This is one of the experimental data comparison charts provided by this utility model.

[0033] Figure 4 This is the second experimental data comparison chart provided by this utility model.

[0034] Figure label:

[0035] 100: Incubator; 110: Incubator body; 120: Lid;

[0036] 200: Material feeding system; 210: Material storage tank; 220: Water pump; 230: Material distribution pipe; 240: Atomizing nozzle;

[0037] 300: Lighting system; 400: Water supply pipe; 500: Drainage pipe; 600: Temperature control system; 700: Coarse mesh cage; 800: Fine mesh cage; 900: Background cloth. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0039] The following is combined Figures 1-2 Describe the structure and working principle of this utility model.

[0040] Reference Figure 1 This utility model provides a koi carp cultivation device comprising a cultivation tank 100, a feeding system 200, and a lighting system 300. The cultivation tank 100 has a water inlet and a drain outlet. The feeding system 200 supplies liquid feed to the cultivation tank 100 and includes a distribution pipe 230 and multiple atomizing nozzles 240. The distribution pipe 230 is located inside the cultivation tank 100. The multiple atomizing nozzles 240 are connected to the distribution pipe 230 and evenly distributed inside the tank body 110. The lighting system 300 is located inside the cultivation tank 100 and provides illumination. Specifically, the lighting system 300 can be a fish tank-specific light, which can adjust the spectrum and light intensity according to actual needs.

[0041] Specifically, the incubator 100 can be constructed by welding, and its inlet and outlet can be equipped with flanges or threaded interfaces for connection to external pipelines. The feed system 200's distribution pipe 230 can be fixed inside the incubator 100 by a bracket, with the bracket and incubator 100 connected by bolts or welding. The distribution pipe 230 can be made of PVC (polyvinyl chloride) or stainless steel and is connected to an external feed pump via a quick-release coupling. Multiple atomizing nozzles 240 are fixed to the distribution pipe 230 by threaded connections or clips and are evenly distributed along the pipe. The lighting system 300 is fixed to the top of the incubator 100 by bolts or magnetic attachment.

[0042] In the above structure, the feeding system 200's distribution pipe 230 delivers liquid feed to each atomizing nozzle 240. The atomizing nozzles 240 atomize the feed and spray it evenly within the culture tank 100, enabling the carp to feed efficiently. The lighting system 300 provides stable lighting conditions, simulating a natural light environment to promote carp growth. This invention ensures uniform feed distribution, preventing fry from clustering or piling up, reducing competition between individuals, improving fry uniformity and feed utilization, and reducing the slow growth of weak fry due to insufficient feeding competition, thus significantly improving fry survival rate. Since patterned koi are small and less competitive for food during the fry stage, this invention can reduce the feeding competition pressure on patterned koi during the fry stage, thereby improving their survival rate. The marketability of koi is positively correlated with the survival rate of patterned koi, thus further improving the marketability of koi. Meanwhile, the lighting system in this invention can provide the necessary lighting according to demand, thereby improving breeding efficiency.

[0043] Based on the above structure, in some possible embodiments, the incubator 100 may be equipped with a water level sensor and an automatic water replenishment device. The water level sensor detects the water level inside the incubator and controls the opening and closing of the water inlet via a solenoid valve. The incubator 100 is made of opaque material, but a transparent observation window can be provided to facilitate real-time monitoring of the carp's growth status. The drain outlet of the incubator 100 can be connected to a sedimentation and filtration device to achieve water recycling. The feeding system 200 may be equipped with a flow regulating valve to precisely control the feed supply from different atomizing nozzles 240. The feeding system 200 may also be equipped with a feed balance detection device, which issues a warning signal when feed is insufficient. The lighting system 300 may use an LED light source and integrate a light intensity sensor to automatically adjust the brightness according to the ambient light. The lighting system 300 may be equipped with a timer switch to simulate day and night light changes, thereby achieving photoperiodic management.

[0044] The feeding system 200 can also be used for nutritional fortification. By adding biological feeds such as rotifers, amino acids, multivitamins, trace minerals, probiotics, and acidifiers to the liquid feed, it can improve the uniformity of fish fry and reduce competition among individuals. Furthermore, the atomizing nozzle 240 can be used for water quality control, such as adjusting the pH value, microbial composition, and mineral content of the water to optimize aquatic conditions and further promote the formation of fish fry body color. The atomizing nozzle 240 can also rotate outwards for easy cleaning and maintenance of the piping system.

[0045] Reference Figure 1 In some embodiments of this utility model, the feeding system 200 further includes a storage tank 210 and a water pump 220. The storage tank 210 is used to store liquid feed and is connected to the incubator 100 through a feeding pipe; the water pump 220 is located on the feeding pipe and is used to transport the liquid feed into the incubator 100.

[0046] Specifically, the feed storage tank 210 can be made of polyethylene or stainless steel, with a discharge port at the bottom connected to the feed pipe via a flange or quick-release coupling. The water pump 220 can be a centrifugal pump or a peristaltic pump, bolted to the feed pipe. The feed pipe can be a flexible or rigid pipe; flexible pipes are secured with clamps, while rigid pipes are connected by threads or welding. The feed storage tank 210 can be equipped with a level sensor to monitor feed levels, connected to an external controller via a signal line. The power cord of the water pump 220 can pass through a waterproof connector to connect to an external power supply system, ensuring a tight seal. The connection between the feed pipe and the distribution pipe 230 can use a tee or flow divider valve structure to regulate flow distribution.

[0047] In the above structure, the liquid feed stored in the storage tank 210 is pressurized by the water pump 220 and then transported to the distribution pipe 230 through the feed pipe, and then atomized and sprayed out by the atomizing nozzles 240. The water pump 220 provides a stable delivery pressure, ensuring that the feed is evenly distributed to each atomizing nozzle 240. This structure realizes automated feed supply, reduces manual intervention, and the uniform arrangement of the atomizing nozzles 240 makes the feed distribution more reasonable, improves the uniformity of fish fry, and reduces the phenomenon of larger fry bullying smaller fry.

[0048] In some possible embodiments, the storage tank 210 may be equipped with a stirring device to prevent feed sedimentation; the stirring device may employ a motor-driven helical blade structure. The top of the storage tank 210 may be equipped with a feeding port and a filter screen to prevent impurities from entering the feeding system 200. The feeding pipe may be equipped with a pressure sensor to monitor pipeline pressure and trigger an alarm in case of abnormality. The storage tank 210 may be equipped with a transparent observation window for visual monitoring of remaining feed. The inlet and outlet of the water pump 220 may be equipped with shock-absorbing hoses to reduce operating noise. The feeding system 200 may integrate a temperature control device to maintain the optimal temperature of the liquid feed. The storage tank 210 may be equipped with an ultraviolet germicidal lamp to extend feed shelf life. The water pump 220 may be equipped with an operating status indicator light for quick troubleshooting. The feeding pipe may be made of corrosion-resistant material to extend its service life. The water pump 220 may be connected to a frequency converter to achieve stepless flow regulation. The water pump 220 may be equipped with a backup power interface to cope with sudden power outages. The feed pipe can branch into multiple branches, each with an independent control valve to meet the feed needs of different areas.

[0049] Reference Figure 1In some embodiments of this utility model, multiple incubators 100 and feeding systems 200 are arranged side-by-side in a one-to-one correspondence; the water inlets of the incubators 100 are all connected in sequence through water supply pipes 400, which are used to inject water into the incubators 100; the drain outlets of the incubators 100 are all connected in sequence through drain pipes 500, which are used to discharge the liquid inside the incubators 100. Control valves are provided on both the water supply pipes 400 and the drain pipes 500.

[0050] Specifically, multiple incubators 100 are arranged horizontally side-by-side, with maintenance passages maintained between adjacent incubators 100. The water supply pipe 400 is made of UPVC (unplasticized polyvinyl chloride), with the main pipe connected to branch pipes via flanges. Each branch pipe is controlled by a ball valve and connected to the water inlet of the incubator 100 via a union. The drain pipe 500 is made of the same material as the water supply pipe 400. The drain outlets of each incubator 100 are connected to the drain pipe 500 via water traps. The drain pipe 500 is laid at a certain slope and collects water in a collection well. The control valves are copper-core ball valves or butterfly valves, connected to the pipeline via threads or flanges, with the valve body operating handle facing the operating passage. The material storage tanks 210 of the feeding system 200 are centrally located at one end of the incubator group 100 and connected to each incubator 100 via branch feeding pipes.

[0051] In the above structure, the water supply pipe 400 regulates the water supply to each incubator 100 via a control valve to ensure uniform water distribution. The drain pipe 500, through a control valve, enables independent drainage control for each incubator 100, avoiding cross-contamination. The parallel arrangement of multiple incubators 100 achieves modularization of the breeding unit, while the series arrangement of the water supply pipe 400 and drain pipe 500 simplifies the piping system. This structure facilitates independent maintenance of a single incubator 100 without affecting the operation of other units. The control valves enhance the flexibility of system operation and reduce management difficulty. Furthermore, the modular design allows for expansion of the breeding scale according to actual needs.

[0052] In some possible embodiments, the water supply pipe 400 can be supplemented with branch circulation pipes, and a return pump can be installed at the end to create a circulating flow of water and maintain uniform water quality. The drain pipe 500 can be equipped with a sedimentation zone, with a sedimentation tank installed at the lowest point of the drain pipe 500, and the sedimentation tank is equipped with a removable filter screen. End supports can be installed at both ends of the incubator group 100, with transverse reinforcing beams on the supports to improve the overall structural strength. The branch feed pipes of the feeding system 200 can be arranged in a ring, with a return pipe at the end connecting to the storage tank 210 to prevent feed sedimentation. By optimizing the pipeline layout and structural design, the stability and reliability of the system are improved; the circulating water design improves water quality; the sedimentation device reduces the risk of drainage blockage; and the overall structural reinforcement ensures the long-term stability of multiple incubator groups 100.

[0053] Reference Figure 1In some embodiments of this utility model, the incubator 100 includes a box body 110 and a cover 120. The top of the box body 110 is provided with an opening; the cover 120 is detachably provided at the opening and has a mesh structure.

[0054] Specifically, the top opening edge of the box body 110 has an outwardly extending mounting edge, which is integrally formed with the box body 110 through a bending process. The cover 120 adopts a rectangular metal frame structure, with stainless steel wire mesh welded and fixed to the inner side of the frame. The frame has downwardly extending snap-fit ​​edges around its perimeter, which are detachably connected to the mounting edge of the box body 110 via elastic snaps. The elastic snaps are injection molded from plastic and symmetrically distributed at the four corners of the cover 120. Each snap is fixed to the frame of the cover 120 with screws. The mounting edge of the box body 110 may have a drainage groove, which is arranged circumferentially along the edge and communicates with the inner cavity of the box body 110 to drain splashed water.

[0055] In the above structure, the cover 120 is quickly assembled and disassembled with the box body 110 via elastic buckles. The mesh structure ensures air circulation and light transmission during the breeding process, while effectively preventing predators. The drainage channel design of the box body 110 can promptly drain water splashed during operation, keeping the breeding environment clean. This structure not only ensures effective enclosure of the breeding space but also facilitates daily observation and maintenance. The elastic buckle connection method is simple to operate and reliable, improving the convenience of breeding management.

[0056] In some possible embodiments, a sliding transparent acrylic plate is added inside the metal frame of the cover 120. The acrylic plate is mounted on the frame via a slide rail and can close the mesh when needed. The frame of the cover 120 may be equipped with reinforcing crossbeams, with both ends of the crossbeams fixed to the frame by bolts to improve the overall load-bearing capacity. An annular sealing groove can be provided on the mounting edge of the box body 110, and a sealing strip can be installed to achieve a complete seal when a solid cover is used. By adding an adjustable transparent baffle and reinforcing structure, the cover 120 has multiple usage modes, maintaining the ventilation and light requirements during normal aquaculture while achieving complete closure under special circumstances, enhancing the applicability and structural reliability of the device.

[0057] Reference Figure 2 In some embodiments of this utility model, a background cloth 900 is provided inside the box body 110. The background cloth 900 is used to adjust the color of light inside the box body 110. The colors of the background cloth 900 include at least black, blue, red, yellow and green.

[0058] Specifically, the backdrop 900 is made of waterproof nylon or PVC material, with reinforced edging and embedded metal support strips. The inner wall of the case body 110 has mounting grooves, which are bolted to the four inner corners of the case body 110. The backdrop 900 is slidably installed by engaging the metal support strips along its edges, with limiting blocks at both ends of the metal support strips to prevent slippage. A dust cover can be installed at the opening of the grooves in the case body 110, and the cover is hinged to the case body 110.

[0059] In the above structure, the light and color environment inside the tank body 110 can be adjusted by sliding the background cloth 900. Different colored background cloths 900 can simulate the natural light and color conditions required by carp at different growth stages. Different colored background cloths are used in conjunction with the lighting system 300 to optimize the formation of fish fry body color and enhance the breeding effect.

[0060] In some possible embodiments, the background cloth 900 can be double-sided, with different color zones on the front and back sides, allowing for more light and color combinations by flipping the background cloth 900. The background cloth 900 can be equipped with a central support rod, with both ends engaging with sliding grooves to improve the flatness of the large-area background cloth 900. The sliding groove of the box body 110 can be designed as a detachable structure, fixed to the inner wall of the box body 110 with screws, facilitating the replacement of background cloths 900 of different specifications. By optimizing the structure and installation method of the background cloth 900, the diversity of light and color adjustment is increased, improving the applicability of the device. Simultaneously, the detachable design allows for easy replacement of the background cloth 900 according to aquaculture needs, enhancing the system's flexibility.

[0061] Reference Figure 1 In some embodiments of this utility model, the koi carp cultivation device also includes a temperature control system 600, which is located inside the incubator 100 and is used to regulate the temperature inside the incubator 100.

[0062] Specifically, the temperature control system 600 includes a heating unit and a temperature sensor. The heating unit uses a stainless steel heating element and is fixed to the bottom of the enclosure body 110 via a mounting bracket. The mounting bracket is made of 304 stainless steel and is bolted to the inner wall of the enclosure body 110. The bracket has an adjustment groove to allow for height adjustment of the heating unit. The temperature sensor is installed in the middle of the side wall of the enclosure body 110 via a waterproof connector, with the sensor probe extending into the water. The power cord of the heating unit passes through a waterproof gland on the side wall of the enclosure body 110 and connects to an external power source. The inner wall of the enclosure body 110 may have a heat insulation layer made of foamed polyethylene material, which is fixed with adhesive.

[0063] In the above structure, the heating unit regulates the temperature by directly heating the water, while a temperature sensor monitors the water temperature in real time and feeds the signal back to the control system. The temperature control system 600 maintains the stability of the water temperature within the incubator 100, providing a suitable growth environment for the koi. The bottom mounting of the heating unit facilitates uniform heat distribution, and the centrally positioned temperature sensor accurately reflects the actual water temperature. This structure achieves precise water temperature control, high heating efficiency, and uniform temperature distribution, contributing to improved growth rate and survival rate of the koi.

[0064] In some possible embodiments, the temperature control system 600 can be combined with a circulation system. A small circulation pump can be added inside the tank body 110, and the circulation pump delivers heated water to various parts of the tank through pipes. The heating units can be arranged in zones, with multiple independently controlled heating zones set at the bottom of the tank body 110. The temperature sensor can be equipped with a protective cover made of porous stainless steel to prevent damage to the sensor from koi collisions. By adding water circulation and zoned heating functions, the uniformity and accuracy of temperature control are further improved. The protective cover design extends the service life of the sensor, making the operation of the temperature control system 600 more stable and reliable.

[0065] Reference Figure 2 In some embodiments of this utility model, a grading and screening system is provided on the upper layer of the background cloth 900. The grading and screening system is used to grade and screen fish fry. The grading and screening system includes a fine mesh net cage 800 and a coarse mesh net cage 700. The fine mesh net cage 800 is located on the upper layer of the background cloth 900; the coarse mesh net cage 700 is located on the upper layer of the fine mesh net cage 800.

[0066] Specifically, the fine-mesh cage 800 and the coarse-mesh cage 700 are transparent cage structures adapted to the cage body 110, and the top of the fine-mesh cage 800 and the coarse-mesh cage 700 are provided with flanges, which can be placed inside the cage body 110 and hung on the edge of the cage body 110 by the flanges.

[0067] It should be noted that the mesh size of the fine-mesh net cage 800 and the coarse-mesh net cage 700 can be changed according to the growth rate and body size changes of the fish fry to achieve grading and sorting of the fish fry, ensure that the individual size of the fish fry is uniform, reduce the crowding phenomenon within the population, prevent the phenomenon of large fry bullying small fry caused by excessive individual differences, and thus ensure the healthy growth of weak fry.

[0068] In some embodiments of this utility model, an aeration system (not shown in the figure) is provided inside the box body 110. The aeration system may specifically be a nano-aeration system.

[0069] Specifically, the aeration system includes a main air pipe and multiple aeration heads. The main air pipe is made of PVC and is fixed to the bottom of the housing body 110 using pipe clamps. The aeration heads are evenly distributed on the bottom surface of the housing body 110 and connected to the main air pipe via threaded connectors. One end of the main air pipe passes through a sealed connector on the side wall of the housing body 110 and connects to an external air pump. The bottom surface of the housing body 110 may have grooves for embedding the main air pipe and aeration heads, and a protective grille is provided above the grooves. The protective grille is made of stainless steel and is fixed to the bottom surface of the housing body 110 with bolts. The air outlets of the aeration heads use a microporous ceramic or rubber diaphragm structure to ensure small and uniform bubbles.

[0070] In the above structure, an external air pump delivers air through the main air pipe to each aerator head, which generates tiny bubbles that are evenly distributed in the water. This structure increases the dissolved oxygen content in the water, promoting the healthy growth of koi. The even distribution of aerator heads at the bottom ensures a wide bubble distribution range, and protective grilles prevent koi from contacting the aerator heads and causing damage. This aeration system operates stably and reliably, with high oxygen dissolution efficiency, while the protective measures effectively protect the aeration device and extend its service life.

[0071] The koi breeding method implemented using the koi breeding device according to any of the above embodiments includes: placing koi fry inside the koi breeding device for cultivation; adding carotenoids to the liquid feed for feeding; and adjusting the spectrum and light intensity of the lighting system 300 to promote the development of pigment cells in the koi fry. By increasing the feeding of carotenoids during the koi fry stage, the variety of colors in the koi can be increased, resulting in a richer variety of colors in the grown koi, thereby improving the commercial value of the koi.

[0072] Specifically, 7 days before stocking the koi fry (referring to young koi), the culture tank 100 is disinfected with a povidone-iodine solution at a concentration of 15 g / m³. The povidone-iodine solution is poured into the entire tank and soaked for 3 days. Then, the culture tank 100 is rinsed clean and filled with water to a depth of 0.8-1 meter. 5-7 days after stocking the culture tank 100, fry that have hatched for 2 days are introduced. The fry should have strong resistance to the current and carry some yolk sac. Because the fry are weak and cannot withstand strong water flow, the circulating water power is set to 10 kW / h. A temperature control system 600 is used to maintain a constant water temperature of 25℃ to prevent temperature fluctuations from causing uneven growth or deformities in the fry, thus improving survival rates. Simultaneously, a nano-aeration system ensures uniform dissolved oxygen distribution in the water, maintaining a dissolved oxygen level greater than 6.0 mg / L to promote healthy fry growth.

[0073] To meet the color development requirements of koi, a black background cloth was laid on the inner wall of the culture tank 100, and a specific spectrum and light intensity were set using adjustable spectrum lighting. Initially, red light was used to promote early growth and development, and in the middle and later stages, the light was adjusted to a combination of bluish and warm white light to optimize the koi's color expression. At the same time, the daily light exposure time was controlled to 12-14 hours to improve the color formation of the fry.

[0074] During the fry feeding process, activate the feeding system 200 to ensure even distribution of liquid feed, guaranteeing uniform feeding and avoiding competitive pressure caused by feed accumulation and localized intensive feeding. Liquid feed includes, but is not limited to, rotifers and other live bait, amino acids, multivitamins, trace minerals, probiotics, and acidifiers. Feed 4-6 times daily, using a small, frequent feeding principle to avoid overfeeding and water pollution. The nutritional composition and feeding frequency can be adjusted according to the fry's growth stage to ensure all fry receive sufficient nutrition, improving uniformity and reducing developmental delays in weaker fry due to insufficient nutrient intake.

[0075] As the fry grow, a grading and sorting system is used for 10-15 days of rearing. Fine-mesh net cages (80 mesh) ensure newly hatched fry do not escape, while coarse-mesh net cages (700 mesh) are adjusted according to the fry's growth rate to maintain uniform size, reduce competition due to large individual differences, and ensure the healthy growth of weaker fry. After 20-35 days of rearing, when the koi fry reach approximately 3-5cm in length, they can undergo the first selection and then be directly transferred to ponds for further rearing.

[0076] Regularly monitor water quality parameters such as temperature, dissolved oxygen, pH, and ammonia nitrogen. Adjust the pH to 6.8-7.2 using a spray system based on the aquatic environment's needs, maintain a stable microbial community, and add appropriate amounts of minerals to optimize the aquatic environment. This optimizes the growth environment for fish fry, further promoting color formation and healthy development. Simultaneously, perform a 10-20% water change daily to reduce the accumulation of harmful metabolites and ensure clear water quality.

[0077] This invention provides a koi breeding method that, by adjusting water quality indicators such as nutrition, light, water temperature, and dissolved oxygen, provides a stable growth environment for fry, improving fry survival rate, uniformity, and reducing deformity rates during the growth stage. Three consecutive years of comparative experiments show that, compared to traditional pond breeding methods, this method significantly increases the 30-day survival rate from an average of 12.5% ​​to 33.5%, increasing the number of high-quality koi available for selection from the source. Ultimately, the marketable koi rate increases from 5% to 6%, meaning that the number of marketable koi fish produced from every 10,000 fry increases from 500 to 600. The following experiments and data demonstrate the effectiveness of this method:

[0078] Reference Figure 3and Figure 4 Experimental treatment group ( Figure 3 and Figure 4 The ATS in the study was fortified with astaxanthin (incubation concentration 5 μM), while the control group ( Figure 3 and Figure 4 In the CON study, astaxanthin was not used. On day 30 after the end of the feeding cycle, 10 healthy fry were randomly selected from each treatment group, and intestinal and liver tissues were collected. These tissues were immediately flash-frozen in liquid nitrogen and stored at -80°C for later use. The relative expression levels of the intestinal SCARB1 (carotenoid uptake receptor) and liver BCO1 (β-carotene-15,15-oxygenase 1) genes were quantitatively analyzed using real-time quantitative PCR (qRT-PCR).

[0079] The results showed that, compared with the control group, the mRNA expression level of the carotenoid uptake receptor SCARB1 in the intestine of koi carp fortified with astaxanthin was significantly upregulated (p<0.05), while the mRNA expression level of β-carotene-15,15-oxygenase 1 (BCO1) in the liver was significantly downregulated (p<0.05). As a key transporter protein for transmembrane uptake of carotenoids, the increased expression level of the SCARB1 gene indicates that it promotes the absorption and transport of astaxanthin in the intestine. The BCO1 gene plays a crucial catalytic role in the oxidative metabolism of carotenoids; the downregulation of BCO1 gene expression may enhance the stability and accumulation capacity of astaxanthin in vivo by reducing its metabolic degradation. These results suggest that astaxanthin fortification during the early developmental stage of koi carp can significantly improve the bioavailability and tissue deposition efficiency of carotenoids, contributing to pigment accumulation and early body color formation. Therefore, this method can improve the pigment deposition of koi by feeding them carotene during the early development stage, thereby increasing the probability of them developing in a direction with ornamental value and thus improving the marketability of koi.

[0080] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A koi carp cultivation device, characterized in that, include: The incubator (100) has a water inlet and a water outlet; A feeding system (200) for supplying liquid feed to the incubator (100), the feeding system (200) comprising: The feed distribution pipe (230) is located inside the incubator (100); Multiple atomizing nozzles (240) are connected to the distribution pipe (230) and are evenly arranged inside the incubator (100); A lighting system (300) is provided inside the incubator (100) to provide illumination inside the incubator (100).

2. The koi carp cultivation device according to claim 1, characterized in that, The feeding system (200) also includes: A storage tank (210) is used to store the liquid feed, and the storage tank (210) is connected to the incubator (100) through a feed pipe; A water pump (220) is provided on the feed pipe for conveying the liquid feed into the incubator (100).

3. The koi carp cultivation device according to claim 1, characterized in that, Multiple incubators (100) and feeding systems (200) are arranged side by side in a one-to-one correspondence; The water inlets of the incubator (100) are all connected in sequence through water supply pipes (400), which are used to inject water into the incubator (100); The drain outlets of the incubator (100) are all connected in sequence through drain pipes (500), which are used to discharge the liquid inside the incubator (100).

4. The koi carp cultivation device according to claim 3, characterized in that, Both the water supply pipe (400) and the drain pipe (500) are equipped with control valves.

5. The koi carp cultivation device according to any one of claims 1-4, characterized in that, The incubator (100) includes: The box body (110) has an opening at its top; The cover (120) is detachably disposed at the opening, and the cover (120) is a mesh structure.

6. The koi carp cultivation device according to claim 5, characterized in that, The interior of the box body (110) is provided with a background cloth (900), which is used to adjust the color of light inside the box body (110); The background cloth (900) includes at least black, blue, red, yellow and green colors.

7. The koi carp cultivation device according to claim 6, characterized in that, Also includes: A temperature control system (600) is located inside the incubator (100) and is used to regulate the temperature inside the incubator (100).

8. The koi carp cultivation device according to claim 7, characterized in that, The upper layer of the background cloth (900) is provided with a grading and screening system, which is used for grading and screening fish fry. The grading and screening system includes: Fine mesh cage (800), the fine mesh cage (800) is disposed on the upper layer of the background cloth (900); A coarse-mesh wire mesh cage (700) is disposed on top of the fine-mesh wire mesh cage (800).

9. The koi carp cultivation device according to claim 5, characterized in that, The box body (110) is equipped with an aeration system inside.

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