Crayfish breeding device, breeding method and breeding method

Abstract

The invention discloses a crayfish breeding device which comprises a breeding pond, a plurality of evenly-distributed breeding net bags are arranged in the breeding pond, a supporting pipe frame is erected on the breeding pond, the breeding net bags are hung on the supporting pipe frame through rope assemblies, and the upper portions of the breeding net bags are exposed out of the liquid level face of the breeding pond. The invention further provides a crayfish breeding method and a crayfish breeding method. The breeding device is used for modern efficient breeding of the crayfishes, the density of the crayfishes can be effectively managed, the problems that due to excessive crowding, the living space is insufficient, survival competition is intense, and the death rate is too high are solved, and therefore the survival rate of the crayfishes is remarkably increased. Meanwhile, the breeding device is very beneficial to artificial breeding, and is beneficial to realizing the hybridization experiment of the crayfish.

Description

Technical Field

[0001] The invention belongs to the field of aquaculture, and in particular relates to a breeding device, a seedling raising method and a breeding method. Background Art

[0002] There are a series of problems and challenges in the traditional crayfish farming system that cannot be ignored. First of all, its mortality rate has always remained at a high level. This is related to the poor breeding environment, such as natural factors such as deteriorating water quality and insufficient dissolved oxygen, and the susceptibility of crayfish to diseases during their growth, such as enteritis, shell rot, black gill disease, etc. At the same time, crayfish are very sensitive to environmental changes and stress reactions. Improper operations such as capture, transportation, and mixed breeding may cause stress reactions. Under stress, the physiological functions of crayfish will be disordered, immunity will be reduced, and they will be susceptible to diseases, and even large-scale deaths will occur.

[0003] Since crayfish are territorial and aggressive, if the breeding density is not properly controlled during the breeding process, frequent and fierce fighting between crayfish may occur. Fighting will not only consume a lot of physical strength of crayfish, causing their physical fitness to decline and slow growth, but also easily cause crayfish to be injured during fighting. Injured crayfish are susceptible to bacteria, such as Aeromonas, Pseudomonas and other common aquatic pathogens. Once the wound is infected by bacteria, it may cause a series of diseases, such as shell rot disease, black gill disease, etc., which seriously threaten the vitality of crayfish.

[0004] Therefore, there are many problems in the current crayfish breeding process, such as improper control of breeding density. Summary of the invention

[0005] The technical problem to be solved by the present invention is to overcome the deficiencies and defects mentioned in the above background technology and provide a crayfish breeding device, seedling raising method and breeding method that are convenient for regulating the density of shrimp groups and optimizing the survival rate and environment.

[0006] In order to solve the above technical problems, the technical solution proposed by the present invention is: A crayfish breeding device comprises a breeding pond, wherein a plurality of evenly distributed breeding net bags are arranged in the breeding pond, a supporting pipe rack is arranged on the breeding pond, the breeding net bags are suspended on the supporting pipe rack through a rope assembly, and the top of the breeding net bags is exposed to the liquid level of the breeding pond.

[0007] In the above-mentioned crayfish breeding device, preferably, a foam ball is provided on the top of the breeding net bag for driving the breeding net bag to rise and fall as the liquid level of the breeding pond changes.

[0008] In the above-mentioned crayfish breeding device, preferably, a counterweight block for preventing the breeding net bag from folding in the vertical direction is provided at the bottom of the breeding net bag.

[0009] In the present invention, by arranging foam balls and counterweights, the breeding net bag can be matched with the liquid level of the breeding pond, so that the opening of the breeding net bag is always located on the liquid level of the breeding pond, and the breeding net bag is prevented from folding as much as possible, so that the breeding space of the breeding net bag can be guaranteed. The above-mentioned counterweights can be heavy objects placed in the breeding net bag, such as stones. Considering the depth of the crayfish breeding pond itself and the cost issues in actual use, the vertical length of the breeding net bag can be maintained at approximately 0.3m-0.4m by using foam balls and counterweights.

[0010] In the above-mentioned crayfish breeding device, preferably, the top and bottom of the breeding net bag are evenly provided with 4 rings, the rope assembly includes a rope loop and a hanging rope, the rope loop is composed of two ropes with the bottoms cross-arranged in the 4 rings, the upper end of the rope loop is connected to the lower end of the hanging rope, and the upper end of the hanging rope is arranged on the supporting pipe rack.

[0011] In the above-mentioned crayfish breeding device, preferably, the top of the breeding net bag is open, and the upper end of the breeding net bag is provided with a plastic baffle for preventing the crayfish from crawling out.

[0012] In the above-mentioned crayfish breeding device, preferably, a plurality of oxygen pumps are provided in the breeding pond, and the outlets of the oxygen pumps are located in the breeding net bag.

[0013] In the above-mentioned crayfish breeding device, preferably, a water changing system is provided in the breeding pond.

[0014] As a general technical concept, the present invention also provides a method for raising crayfish seedlings using the above-mentioned crayfish breeding device, comprising the following steps: selecting the father and mother of the crayfish, placing the father and mother into the same breeding net bag, controlling the breeding conditions in the breeding pond, and carrying out breeding; the same batch of fathers and mothers can be placed in different breeding net bags, or different batches of fathers and mothers can be placed.

[0015] As a general technical concept, the present invention also provides a method for cultivating crayfish using the above-mentioned crayfish cultivation device, comprising the following steps: evenly placing crayfish seedlings into the cultivation net bag, controlling the cultivation conditions in the cultivation pond, and allowing the crayfish to grow.

[0016] The crayfish breeding device of the present invention mainly comprises breeding net bags, supporting pipe racks, rope components, oxygen pumps and water exchange systems distributed in or on the breeding pond. Specifically: (1) The breeding net bag can be a cylindrical dense mesh box. Its design concept fully respects and simulates the natural living habits and environmental conditions required for the reproduction and survival of crayfish. This dense mesh box is made of corrosion-resistant materials to ensure that the box can remain stable and intact after long-term immersion in water and friction with crayfish.

[0017] The dense mesh box is designed with dense and uniform meshes. The size of these meshes is carefully set according to the body characteristics of crayfish. It can effectively prevent crayfish from escaping, but it will not be too dense to affect its normal activities. The density of the mesh is usually expressed in "mesh", where "mesh" refers to the number of meshes per square centimeter. According to the needs of crayfish farming of different specifications, the density of the cage will be different. Generally, the mesh number of the cage used for breeding crayfish is 18 mesh. This design can ensure that crayfish cannot escape from the mesh, and can also ensure good circulation of the water inside the box and sufficient sunlight. The dense mesh box is suspended under a sturdy and durable support pipe frame by a soft and wear-resistant rope assembly. The depth can be flexibly adjusted to ensure that 1 / 3 of the box is properly submerged in the water, providing sufficient activity space and shelter for the crayfish population.

[0018] At the same time, because the breeding net bags have a certain degree of elasticity and ductility, they can produce slightly deformed as the shrimps swim, providing sufficient space for the shrimps to move around, ensuring that they can move freely, forage and take shelter in the breeding net bags without feeling any restraint, thereby maintaining their normal physiological behavior and living habits.

[0019] For crayfish farming, the right diameter can ensure sufficient activity space and shelter without occupying too much water resources. The specific parameters of the cylindrical dense mesh box, including diameter, depth, rope material and length, etc., need to be customized and manufactured according to actual application requirements.

[0020] (2) The water exchange system, i.e., the pumping device, is used to regularly or continuously inject water into the culture pond to keep the water clean, or dynamically adjust the water exchange frequency according to the real-time data of the water quality monitoring system to keep the pH value within the appropriate range (7.5-8.5), effectively preventing the physiological functions of shrimps from being affected by excessive fluctuations in pH. At the same time, through high-efficiency filtration and biological purification, the ammonia nitrogen (NH3-N) content is controlled within the safety threshold (≤0.5 mg / L) to avoid the toxic effects caused by excessive ammonia nitrogen concentration, and the content of harmful substances such as nitrite (NO2-N) is reduced to the lowest level (≤0.1 mg / L), thereby protecting the shrimp population from the risk of nitrite poisoning and ensuring that the water quality will not deteriorate to a level that endangers the health of the shrimp population under any circumstances.

[0021] (3) Pipe support rack: This is the basic support structure of the entire facility. It is usually made of stainless steel, aluminum alloy or other high-strength lightweight materials. It can resist corrosion and the impact of bad weather, ensuring the stability and durability of the facility. The design and construction of the pipe support rack have also been carefully optimized to withstand various mechanical and natural forces to ensure the safety and reliability of the facility.

[0022] (4) Rope assembly: One end of the rope is bound or wrapped around the outside of the aquaculture net bag, and the other end is reliably fixed to the support pipe rack, ensuring that the aquaculture net bag can maintain a tight and stable connection with the support pipe rack in both static and dynamic conditions, thereby effectively preventing the aquaculture net bag from shifting or falling off due to external forces. As for the specific material selection of the rope assembly, synthetic fiber materials with high strength, good wear resistance, corrosion resistance, and not easy to age and break are usually considered, such as nylon, polypropylene or high-strength polyester fiber. These materials not only meet the needs of safety and firmness, but also have good UV resistance.

[0023] (5) Aeration pump: The air outlet of the aeration pump is placed in the breeding net bag, and the aeration pump itself can be placed next to the pumping device for easy management. By artificially increasing the dissolved oxygen content in the water, the high demand for oxygen of shrimp can be met, preventing large-scale deaths caused by lack of oxygen.

[0024] In practical applications, the breeding device of the present invention can be flexibly combined and expanded, and can be personalized according to the needs of shrimp farming of different scales. At the same time, the breeding device of the present invention is also easy to carry, which is convenient for transfer and use between different waters, reducing the dependence on fixed sites. Through the breeding net bag, crayfish can be stored and bred in batches on a large scale, and the development of crayfish breeding experiments is also supported. Since all components can be disassembled and assembled, transportation and storage are also very convenient.

[0025] The breeding device of the present invention is an improved new breeding equipment, which fully takes into account the living habits, growth environment requirements and breeding efficiency of crayfish. Through scientific and reasonable layout and structure, such as setting up sufficient living space, avoiding caves, sufficient sunlight exposure area and reasonable breeding density, the breeding output within the same unit area is significantly improved, the breeding cycle is shortened, and the breeding cost is reduced. It aims to provide an efficient, environmentally friendly and sustainable crayfish breeding solution.

[0026] The breeding device of the present invention is specially designed for efficient breeding of crayfish. The core lies in regulating the density of shrimp populations and optimizing the survival rate and environment. It can be customized according to the breeding scale and has excellent portability. It relies on an array of breeding net bags to realize batch storage and breeding. The components can be easily disassembled and assembled, and transportation and storage are convenient.

[0027] Compared with the prior art, the advantages of the present invention are: The breeding device of the present invention is used for modern and efficient breeding of crayfish. Its core design concept is to finely control the living density of crayfish groups in a scientific way (such as 12 shrimps per square meter) to improve the breeding rate of crayfish. In the process of large-scale breeding of crayfish, this facility can effectively manage the density of crayfish seedlings, prevent problems such as insufficient living space due to overcrowding and high mortality due to fierce competition for survival, thereby significantly improving the survival rate of crayfish seedlings.

[0028] The breeding device of the present invention uses multiple breeding net bags, which can be used for precise breeding. The male and female crayfish of the offspring crayfish can be determined in a single breeding net bag, which is very conducive to artificial breeding. During the breeding and mating period of crayfish, the separation of the breeding net bags can effectively avoid the death caused by the inter-species struggle of crayfish in crayfish breeding, thereby improving the breeding efficiency. The hanging setting of the breeding net bag can facilitate the precise adjustment of the breeding shrimp of the single breeding net bag in the breeding pond, which is conducive to the realization of the hybridization experiment of crayfish in the process.

[0029] The breeding device of the present invention is very helpful for changing water in the breeding pond, because the breeding net bag is fixed on the supporting pipe frame, so when changing water, the water discharge operation can be started directly, and then the water injection can be carried out, and there is no need to perform additional transfer of the cultured shrimps during this process. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0031] Figure 1 It is a schematic structural diagram of the crayfish breeding device of the present invention (the oxygen pump is not shown).

[0032] Figure 2 It is a front view of the crayfish breeding device of the present invention.

[0033] Figure 3 It is a schematic structural diagram of a breeding net bag in the breeding device for crayfish of the present invention.

[0034] Legend 1. Breeding pond; 2. Breeding net bag; 3. Support pipe rack; 4. Rope assembly; 41. Rope sleeve; 42. Suspension rope; 5. Foam ball; 6. Counterweight block; 7. Ring; 8. Aeration pump; 9. Water exchange system. DETAILED DESCRIPTION

[0035] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively and meticulously below in conjunction with the accompanying drawings and preferred embodiments of the present invention, but the protection scope of the present invention is not limited to the following specific embodiments.

[0036] It should be noted that when an element is described as being "fixed, fixed, connected or connected to" another element, it can be directly fixed, fixed, connected or connected to the other element, or it can be indirectly fixed, fixed, connected or connected to the other element through other intermediate connectors.

[0037] Unless otherwise defined, all the professional terms used below have the same meanings as those generally understood by those skilled in the art. The professional terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the scope of protection of the present invention.

[0038] Unless otherwise specified, various raw materials, reagents, instruments and equipment used in the present invention can be purchased from the market or prepared by existing methods.

[0039] Example: like Figure 1 , Figure 2 As shown, the crayfish breeding device of this embodiment includes a breeding pool 1, in which a plurality of evenly distributed breeding net bags 2 are arranged, and a supporting pipe rack 3 is arranged on the breeding pool 1. The breeding net bags 2 are suspended on the supporting pipe rack 3 through a rope assembly 4, and the top of the breeding net bags 2 is exposed to the liquid level of the breeding pool 1. The supporting pipe rack 3 can be made of stainless steel.

[0040] like Figure 3 As shown, in this embodiment, a foam ball 5 is provided on the top of the breeding net bag 2 for driving the breeding net bag 2 to rise and fall with the change of the liquid level of the breeding pond 1. The breeding net bag 2 has a mesh number of 18 and is made of corrosion-resistant materials.

[0041] In this embodiment, a counterweight 6 is provided at the bottom of the breeding net bag 2 to prevent the breeding net bag 2 from folding in the vertical direction. Specifically, in this embodiment, the counterweight 6 can be a stone, and the vertical length of the breeding net bag 2 is controlled to be 0.3-0.4m by the counterweight 6 and the foam ball.

[0042] In this embodiment, the top and bottom of the breeding net bag 2 are evenly provided with four rings 7, the rope assembly 4 includes a rope sleeve 41 and a suspension rope 42, the rope sleeve 41 is composed of two ropes with the bottom cross-set in the four rings 7, the upper end of the rope sleeve 41 is connected to the lower end of the suspension rope 42, and the upper end of the suspension rope 42 is set on the support pipe frame 3. The rope sleeve 41 and the suspension rope 42 can be high-strength polyester fiber.

[0043] In this embodiment, the top of the breeding net bag 2 is open, and a plastic baffle is provided at the upper end of the breeding net bag 2 to prevent the crayfish from crawling out.

[0044] In this embodiment, a plurality of oxygen pumps 8 are provided in the culture pond 1, and the outlet of the oxygen pump 8 is located in the culture net bag 2. One oxygen pump 8 can be used, and its outlet is branched into a plurality of branch pipes, which are respectively placed in each culture net bag 2.

[0045] In this embodiment, a water exchange system 9 is provided in the culture pond 1, which may be specifically a pumping device.

[0046] The method for raising crayfish seedlings using the above-mentioned breeding device of this embodiment includes the following steps: selecting the father and mother of the crayfish, placing the father and mother into the same breeding net bag 2, controlling the breeding conditions in the breeding pond 1, and carrying out breeding; the same batch of fathers and mothers can be placed in different breeding net bags 2, or different batches of fathers and mothers can be placed.

[0047] The method for breeding crayfish using the above breeding device of this embodiment includes the following steps: evenly placing crayfish seedlings into the breeding net bag 2, controlling the breeding conditions and breeding density (which may be 12 shrimps per square meter) in the breeding pond 1, and allowing the crayfish to grow.

[0048] The seedling raising conditions and breeding conditions in the above-mentioned seedling raising method and breeding method can refer to the process conditions related to crayfish breeding in the prior art.

[0049] The breeding device of this embodiment can be used for modern and efficient breeding of crayfish. Its core design concept is to finely control the living density of crayfish groups in a scientific way to improve the breeding rate of crayfish. In the process of large-scale breeding of crayfish, this facility can effectively manage the density of crayfish seedlings, prevent problems such as insufficient living space due to overcrowding and high mortality due to fierce competition for survival, thereby significantly improving the survival rate of crayfish seedlings.

[0050] The breeding device of this embodiment uses multiple breeding net bags 2, which can be used for precise breeding. The male and female crayfish of the offspring crayfish can be determined in a single breeding net bag 2, which is very beneficial for artificial breeding. During the breeding and mating period of crayfish, the separation of the breeding net bags 2 can effectively avoid the death caused by the inter-species struggle of crayfish in crayfish breeding, thereby improving the breeding efficiency. The hanging setting of the breeding net bag 2 can facilitate the precise adjustment of the breeding shrimp of the single breeding net bag 2 in the breeding pond 1, which is beneficial for the hybridization experiment of crayfish in the process.

Claims

1. A crayfish breeding device, comprising a breeding pond (1), characterized in that: The culture pond (1) is provided with a plurality of evenly distributed culture net bags (2), a supporting pipe rack (3) is provided on the culture pond (1), the culture net bags (2) are suspended on the supporting pipe rack (3) via a rope assembly (4), and the top of the culture net bags (2) is exposed above the liquid level of the culture pond (1).

2. The crayfish breeding device according to claim 1, characterized in that: A foam ball (5) is provided on the top of the aquaculture net bag (2) for driving the aquaculture net bag (2) to rise and fall as the liquid level of the aquaculture pond (1) changes.

3. The crayfish breeding device according to claim 1, characterized in that: A counterweight (6) is provided at the bottom of the breeding net bag (2) for preventing the breeding net bag (2) from folding in the vertical direction.

4. The crayfish breeding device according to claim 1, characterized in that: The top and bottom of the breeding net bag (2) are evenly provided with four rings (7), the rope assembly (4) comprises a rope sleeve (41) and a suspension rope (42), the rope sleeve (41) is composed of two ropes whose bottoms are cross-arranged in the four rings (7), the upper end of the rope sleeve (41) is connected to the lower end of the suspension rope (42), and the upper end of the suspension rope (42) is arranged on the supporting pipe frame (3).

5. The crayfish breeding device according to any one of claims 1 to 4, characterized in that: The top of the breeding net bag (2) is open, and the upper end of the breeding net bag (2) is provided with a plastic baffle for preventing the crayfish from crawling out.

6. The crayfish breeding device according to any one of claims 1 to 4, characterized in that: A plurality of oxygen pumps (8) are provided in the culture pond (1), and outlets of the oxygen pumps (8) are located in the culture net bag (2).

7. The crayfish breeding device according to any one of claims 1 to 4, characterized in that: The culture pond (1) is provided with a water exchange system (9).

8. A method for raising crayfish seedlings using the crayfish breeding device according to any one of claims 1 to 7, characterized in that: The following steps are involved: The male and female crayfish are selected and placed in the same breeding net bag (2), and the seedling raising conditions in the breeding pond (1) are controlled to carry out seedling raising; the same batch of male and female crayfish can be placed in different breeding net bags (2), or different batches of male and female crayfish can be placed.

9. A method for cultivating crayfish using the crayfish cultivation device according to any one of claims 1 to 7, characterized in that: The following steps are involved: The crayfish fry are evenly placed into the breeding net bag (2), and the breeding conditions in the breeding pond (1) are controlled to allow the crayfish to grow.

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