Crayfish factory breeding pond
The factory breeding pond design with a stacked pool system and heating/aeration features addresses low capture and survival rates, automates egg selection, and reduces costs by enabling natural segregation and increased egg production in crayfish breeding.
Patent Information
- Application Number
- CN202010323617.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2020-04-22
- Publication Date
- 2025-01-03
- Estimated Expiration
- 2040-04-22
AI Technical Summary
Current crayfish breeding methods face challenges such as low capture rates, long breeding times, low survival rates, difficulty in accurately judging gonadal development stages, and high labor intensity in selecting broodstock, leading to issues like missing or dropping eggs and increased costs.
A factory breeding pond design with a bottom pool and an upper pool stacked on top, where the upper pool has an opening and a slope connecting to the bottom pool, allowing egg-carrying shrimp to migrate naturally, combined with heating pipes to stimulate mating and aeration devices to increase egg production, eliminating the need for manual egg selection.
Enhances breeding efficiency by automating egg selection, increasing egg production, reducing labor intensity, and lowering costs through self-segregation of egg-carrying and non-egg-carrying shrimp, while ensuring high survival rates and synchronous hatching.
Smart Images
Figure CN111387125B_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of crayfish breeding, and in particular to a crayfish factory breeding pond. Background Art
[0002] At present, the main breeding methods for crayfish are pond seedlings or rice field seedlings, which have the advantages of large basic area and low management intensity. However, there are also many problems. First, the seedlings are large in size and can only catch shrimp seedlings weighing more than 4g by cage capture, and the capture rate is not high. It is necessary to repeatedly put the cage down and fish for a long time. Second, the breeding time is long, from the completion of adult shrimp sales in June to the appearance of early seedlings in November, and then from November to March of the following year. The seedlings have a low survival rate. During the growth process, due to self-mutilation, predation by natural enemies, fishing damage, etc., the emergence rate is less than 30%. The factory breeding method can be caught in batches from the pond about 10 days after the seedlings leave the mother body. The seedlings are neat in size and the emergence rate can reach more than 80%. The autumn seedlings can be raised in winter in subtropical areas to achieve off-season listing, so it has a good industry prospect. At present, Hubei Province and Jiangsu Province have carried out research on factory breeding of crayfish. Through intensive breeding of crayfish parents and centralized egg holding, the selected broodstock are placed in the parent breeding pond around September 30, with a parent breeding density of 40 to 50 per square meter. After 30 to 40 days of intensive breeding with special feed, the egg holding rate of female shrimp can reach 60% to 70%. Then the female shrimp holding eggs are placed in the breeding pond for breeding. However, there are still several problems with the above-mentioned factory breeding method: First, it is difficult to accurately judge the gonadal development stage of crayfish. They can only breed the broodstock after mating in the workshop, and then select the female shrimp holding eggs in the abdomen and put them into the nursery pond to obtain synchronous hatching seedlings. However, the accurate selection of broodstock requires high technical experience and labor intensity, otherwise it will cause the phenomenon of missing broodstock or dropping eggs; second, the number of crayfish holding eggs is low, and a large number of broodstock are required. The breeding of broodstock occupies more than half of the space, and the cost of breeding is more than doubled. Summary of the invention
[0003] An object of the present invention is to solve at least the above problems and / or disadvantages and to provide at least the advantages which will be described hereinafter.
[0004] One object of the present invention is to provide a factory-scale breeding pond for crayfish, which does not require manual selection of shrimps with eggs, thereby avoiding missing shrimps with eggs or dropping eggs, and improving breeding efficiency.
[0005] In order to achieve these purposes and other advantages according to the present invention, a crayfish factory breeding pond is provided, comprising:
[0006] A bottom pool and an upper pool, wherein the upper pool is stacked on the top of the bottom pool, covers a portion of the bottom pool, and the upper pool is not in liquid communication with the upper pool, the side wall of the upper pool has an opening, and the water depth of the upper pool is less than the water depth of the bottom pool; and
[0007] The upper end of the slope is connected to the opening, and the lower end extends below the water surface of the bottom pool.
[0008] Preferably, in the crayfish factory breeding pond, the slope is combined with the upper pool and the bottom pool in a detachable manner.
[0009] Preferably, in the crayfish factory breeding pond, the bottom pool is rectangular with a length-to-width ratio of 2 to 2.5:1, a depth of 80 cm, and a water depth of 50 cm.
[0010] Preferably, in the crayfish factory breeding pond, the area of the upper pond is 60% to 80% of the area of the bottom pond, and the water depth of the upper pond is 30 cm.
[0011] Preferably, in the crayfish factory breeding pond, the first front side wall of the upper pool has a first water inlet, and the first rear side wall has a seedling collection port; the opening is arranged on the first front side wall of the upper pool.
[0012] Preferably, in the crayfish factory breeding pond, the outer side of the seedling collection port is connected to a net cage.
[0013] Preferably, in the crayfish factory breeding pond, the second front side wall of the bottom pool has a second water inlet, and the second rear side wall has a second drain outlet.
[0014] Preferably, in the crayfish factory breeding pond, a ditch is provided corresponding to the outer side of the second drainage outlet.
[0015] Preferably, in the crayfish factory breeding pond, a heating pipe and a microporous oxygenation device are provided in the bottom pool.
[0016] Preferably, in the crayfish factory breeding pond, a microporous oxygenation device is provided in the bottom pool, and no aquatic plants are added.
[0017] The present invention has at least the following beneficial effects:
[0018] (1) The present invention provides a crayfish factory breeding pond, including a bottom pool and an upper pool. The upper pool is stacked on the top of the bottom pool, covering a part of the bottom pool, and the liquid between the upper pool and the bottom pool is not connected. The side wall of the upper pool has an opening, and its water depth is less than the water depth of the bottom pool. The upper end of the slope is connected to the opening, and the lower end extends below the water surface of the bottom pool. The bottom pool is used to breed female shrimps after mating. Shrimp without eggs like to live in the deep water of the bottom layer and the part blocked by the upper pool. Shrimp with eggs like shallow water and will climb up the slope or enter the shallow water area of the upper pool by themselves. Therefore, based on the crayfish factory breeding pond provided by the present invention, it is no longer necessary to manually select shrimp with eggs, which avoids the situation of missing selection or dropping eggs.
[0019] (2) The present invention sets a heating pipe in the bottom pool, which can stimulate the crayfish to mate and incubate eggs by rapidly increasing the temperature. The present invention also designs a second water inlet on the second front side wall of the bottom pool and a second drain on the second rear side wall. The bottom pool is changed through the second water inlet and the second drain to stimulate the crayfish to mate and incubate eggs. Therefore, the present invention can increase the number of crayfish incubation eggs, save the breeding of seed shrimp, and save the cost of seedling cultivation.
[0020] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through study and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 This is a schematic structural diagram of an embodiment of the crayfish factory breeding pond of the present invention;
[0022] Figure 2 for Figure 1 AA section view of the . DETAILED DESCRIPTION
[0023] The present invention is further described in detail below in conjunction with the accompanying drawings so that those skilled in the art can implement the invention with reference to the description.
[0024] like Figure 1 and Figure 2 As shown, the present invention provides a crayfish factory breeding pond, comprising: a bottom pool 2 and an upper pool 1, wherein the upper pool 1 is stacked on the upper part of the bottom pool 2, covering a part of the bottom pool 2, and the liquid between the upper pool and the upper pool is not connected, the side wall of the upper pool 1 has an opening 4, the water depth of the upper pool is less than the water depth of the bottom pool; and a slope 3, the upper end of which is connected to the opening, and the lower end extends to below the water surface 11 of the bottom pool.
[0025] The bottom pool 2 is mainly used to culture female shrimps after mating. Female shrimps can be released in time when the density is insufficient. It is advisable to control the number of female shrimps to 12 per square meter. In the season when there is a lack of naturally mating female shrimps, male shrimps and female shrimps can be released at a ratio of 1:2. After the temperature is raised to 30℃ by heating pipes, the bottom pool water is drained and new water is added to stimulate mating.
[0026] During daily management, the water in the bottom pool 2 floods the slope. The shrimps with eggs like shallow water and will enter the shallow water area (i.e., the upper pool) along the slope, while the shrimps without eggs like to live in the deep water of the lower layer and the part blocked by the upper pool (i.e., a part of the area covered by the upper pool in the bottom pool). The slope is checked regularly every day. If shrimps with eggs (characterized by a slightly curled body) are found, they are picked up and put into the upper pool. Based on the breeding pond provided by the embodiment of the present invention, the shrimps with eggs can climb out of the bottom pool and enter the upper pool by themselves, and there is no need to manually select the shrimps with eggs, which avoids missing or dropping eggs, and improves the breeding efficiency.
[0027] In a preferred embodiment, in the crayfish factory breeding pond, the slope 3 is combined with the upper pool 1 and the bottom pool 2 in a detachable manner.
[0028] The ramp can be removed from the upper and lower pools as needed for replacement or cleaning.
[0029] Specifically, the upper end of the slope can be connected to the opening position of the upper pool by a pin, or other connection methods can be adopted. The lower end of the slope can abut against the bottom of the bottom pool.
[0030] In a preferred embodiment, in the crayfish factory breeding pond, the bottom pool 2 is rectangular with a length-to-width ratio of 2 to 2.5:1, a depth of 80 cm, and a water depth of 50 cm, thereby ensuring that the crayfish cannot climb out and escape.
[0031] In a preferred embodiment, in the crayfish factory breeding pond, the area of the upper pool 1 is 60% to 80% of the area of the bottom pool 2, and the water depth of the upper pool 1 is 30 cm.
[0032] Egg-carrying shrimp will climb up the slope from the deep water area of the bottom pool to the shallow water area of the upper pool.
[0033] In a preferred embodiment, in the crayfish factory breeding pond, the first front side wall 10 of the upper pool 1 has a first water inlet 6, and the first rear side wall has a seedling collection port 5; the opening 4 is arranged on the first front side wall of the upper pool.
[0034] In a preferred embodiment, in the crayfish factory breeding pond, the outer side of the seedling collection port 5 is connected to a net cage.
[0035] The seedling collection port of the upper pool also serves as the first drainage port of the upper pool. After the brooding shrimp hatch the seedlings in the upper layer, the first drainage port of the upper pool is opened and the seedlings are harvested with a net cage. After harvesting, water can be taken in again through the first water inlet.
[0036] In a preferred embodiment, in the crayfish factory breeding pond, the second front side wall of the bottom pool 2 has a second water inlet 9, and the second rear side wall has a second drain outlet 8.
[0037] In the process of breeding crayfish, the water in the bottom pool is drained through the second drain outlet, and then water is introduced through the second water inlet to change the water in the bottom pool. This can stimulate the crayfish to mate and incubate eggs, thereby increasing the number of eggs incubated, reducing the breeding of brood shrimps, and reducing the cost of seedling cultivation.
[0038] In a preferred embodiment, in the crayfish factory breeding pond, a ditch is correspondingly arranged outside the second drainage outlet 8.
[0039] Wastewater can be discharged into the ditch through the second drain outlet.
[0040] In a preferred embodiment, in the crayfish factory breeding pond, a heating pipe 7 and a microporous oxygenation device are provided in the bottom pool 2.
[0041] Heating pipes are installed in the bottom pool to stimulate crayfish to mate and incubate eggs by rapidly raising the temperature, thereby increasing the number of eggs incubated by crayfish, saving on the cultivation of broodstock, and saving on seedling costs.
[0042] In a preferred embodiment, in the crayfish factory breeding pond, a microporous aeration device is provided in the bottom pool 2, and no aquatic plants are placed. In this embodiment, no aquatic plants are placed to prevent the egg-carrying shrimp from hatching in the aquatic plants, and at the same time, the microporous aeration device is used to increase the oxygen content in the bottom pool to meet the growth needs of the crayfish.
[0043] Although the embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the specification and the embodiments. It can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily realized. Therefore, without departing from the general concept defined by the claims and equivalent scope, the present invention is not limited to the specific details and the illustrations shown and described here.
Claims
1. The crayfish factory breeding pond is characterized by: include: A bottom pool and an upper pool, wherein the upper pool is stacked on the top of the bottom pool, covers a portion of the bottom pool, and the upper pool is not in liquid communication with the upper pool, the side wall of the upper pool has an opening, and the water depth of the upper pool is less than the water depth of the bottom pool; and A slope, the upper end of which is connected to the opening, and the lower end of which extends below the water surface of the bottom pool; The slope is combined with the upper pool and the bottom pool in a detachable manner; the bottom pool is rectangular, with a length-to-width ratio of 2 to 2.5:1, a depth of 80 cm, and a water depth of 50 cm; the area of the upper pool is 60% to 80% of the area of the bottom pool, and the water depth of the upper pool is 30 cm; the first front side wall of the upper pool has a first water inlet, and the first rear side wall has a seedling collection port; the opening is arranged on the first front side wall of the upper pool; the outer side of the seedling collection port is connected to a net cage; the second front side wall of the bottom pool has a second water inlet, and the second rear side wall has a second drainage port.
2. The crayfish factory breeding pond according to claim 1, characterized in that: A ditch is correspondingly arranged outside the second drainage outlet.
3. The crayfish factory breeding pond according to claim 1, characterized in that: A heating pipe is arranged in the bottom pool.
4. The crayfish factory breeding pond according to claim 1, characterized in that: A microporous oxygenation device is arranged in the bottom pool, and no aquatic plants are placed.