Bellamya pond fry breeding cage and using method

Abstract

The invention discloses a bellamya pond fry breeding cage and a using method, and belongs to the field of freshwater snail breeding facilities in aquaculture, the cage comprises an upper cover, a lower shell, an attachment plate and buoyancy ball supports, the cage is integrally designed to be in an oval barrel shape, the buoyancy ball supports are arranged on the two sides of the lower shell, and the cage floats on the water surface by additionally arranging buoyancy balls; attachment plates are arranged in the cage to increase the attachment space in the cage; the attachment plates are clamped in the slots in the two sides and connected through the connecting strips on the two sides so as to reinforce the attachment plates; rectangular lower shell air holes are uniformly and densely distributed in the periphery of the lower shell to facilitate water exchange inside and outside the cage in the snail breeding process; meanwhile, a lower shell reinforcing strip is arranged to reinforce the lower shell body; similarly, upper cover water permeable holes are uniformly and densely distributed on the periphery of the upper cover, and upper cover reinforcing strips are additionally arranged; an upper cover handle and a lower shell handle are respectively arranged at the corresponding positions of the edges of the two end sections of the upper cover and the lower shell; and an upper cover positioning column and a lower shell fixing hole are respectively arranged at the corresponding positions of the edges of the middle parts of the upper cover and the lower shell.

Description

Technical Field

[0001] The invention provides a hanging cage for cultivating fry of Ringelichthys pond and a use method thereof, which can be used for raising all species of Ringelichthys in ponds, reservoirs, canals or fish ditches in rice fields, and belongs to the field of freshwater snail cultivation facilities in aquaculture. Background Art

[0002] At present, the species that are cultivated more in my country are the ring-shaped snails and the round pond snails, which are mainly cultivated in rice fields and ponds. However, both have the following problems that need to be solved:

[0003] ① Rice field snail farming technology: In the rice field snail farming model, birds in the air often threaten the lives of snails. Although they are disinfected before the release of snails, wild fish and golden apple snails enter the rice fields due to incomplete disinfection or loose closure of the water inlet, snails and snails snails grab ecological niches and even harm the snails. At present, neither biological control nor drug control can kill wild fish and golden apple snails without harming the snails. Their strong reproductive capacity makes manual control ineffective and ineffective. These harmful organisms lead to reduced snail production and increased management costs, and there are no effective control measures.

[0004] In addition, during the snail farming process, machinery cannot enter the fields to operate, and rice planting and harvesting can only rely on manual labor; the shells of dead snails remain in the fields and will cut farmers' feet; there is no snail catching machinery, so snails can only be picked up or raked manually. All of the above increase the cost of snail farming.

[0005] ②Pond snail farming technology: purify water quality and facilitate harvesting. The pond snail farming model often mixes fish, shrimp and other aquatic species, so as to achieve a three-dimensional farming effect of raising fish and shrimp in the water and raising snails at the bottom of the water. Its disadvantages are also obvious:

[0006] (1) Become a supplementary bait and by-product. Since fish and shrimps will prey on snails, snails are used as a supplementary bait. Farmers often pay more attention to fish and shrimps with higher economic value and ignore snails, making it difficult to guarantee the production of snails, and thus they become a by-product.

[0007] (2) Fishing is limited and production is underestimated. Snails can only be caught when the pond is cleared after fishing and shrimping. If fish and shrimp are only caught once a year, snails can only be caught once, which leads to an underestimate of snail production.

[0008] Therefore, how to design a hanging cage for cultivating seedlings of ring-shaped snails in ponds and a method for using the same has become a technical problem to be solved by those skilled in the art. Summary of the invention

[0009] In view of the deficiencies in the above-mentioned prior art, the technical problem to be solved by the present invention is: to provide a hanging cage for cultivating snail pond seedlings and a method for using the same, so as to solve the problems that the traditional hanging net for breeding is exposed to the open air and cannot protect the snails from being harmed by birds; the hanging net is made of nylon material, which is relatively soft and the mesh is easily clogged, resulting in obstruction of water exchange inside and outside the net; the snails in the hanging net can only scrape the bait on the bottom or the attachments on the four sides.

[0010] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0011] A hanging cage for cultivating seedlings of ring-edge snails in ponds comprises an upper cover, a lower shell, an attachment plate and a buoyancy ball bracket. The overall design of the hanging cage is an elliptical barrel shape. Buoyancy ball brackets are arranged on both sides of the lower shell. The hanging cage floats on the water surface by adding buoyancy balls. An attachment plate is arranged in the cage to increase the attachment space in the cage. The attachment plate is clamped in the slots on both sides and connected by connecting strips on both sides to reinforce the attachment plate. Rectangular lower shell air holes are evenly distributed around the lower shell to facilitate water exchange inside and outside the cage during the snail breeding process. At the same time, a lower shell reinforcement strip is provided to reinforce the lower shell shell. Similarly, upper cover water holes are evenly distributed around the upper cover, and an upper cover reinforcement strip is added. Upper cover handles and lower shell handles are respectively arranged at corresponding positions at the edges of the two end sections of the upper cover and the lower shell; at the same time, upper cover positioning columns and lower shell fixing holes are respectively arranged at corresponding positions at the edges in the middle of the upper cover and the lower shell.

[0012] Preferably, all materials used to make the cage are plastic, and the buoyancy ball is plastic.

[0013] Preferably, the diameter of the water-permeable holes in the upper cover and the water-permeable holes in the lower shell is 2.7 mm.

[0014] A method for using a hanging cage for cultivating snail fry in a pond: firstly, attaching plates are clamped in the slots on both sides of a lower shell 1, and the two are connected by connecting strips; then, buoyancy balls are installed on buoyancy ball brackets, and the number of buoyancy balls is adjusted according to the weight of snails stocked in the cage; finally, an upper cover is put on, the entire hanging cage is placed in a culture water body, and is tightened and fixed by a sling.

[0015] Beneficial Effects

[0016] Among the existing technologies used for snail farming, the one that is relatively similar to the present invention is the hanging net snail farming technology. Compared with this technology, the present invention has the following advantages:

[0017] 1. The present invention adopts a movable cage cover design, which helps to prevent birds from preying on snails in the cage and solves the problem that the hanging net is exposed to the open air and cannot protect the snails from being harmed by birds.

[0018] 2. The present invention is made of plastic, the mesh is not easy to be clogged, and the water permeability is strong, which solves the problem that the hanging net is made of nylon material, which is relatively soft and the mesh is easy to be clogged, resulting in obstruction of water exchange inside and outside the net.

[0019] 3. The present invention is designed with an attachment plate inside the cage, which increases the attachment area of ​​water debris and microorganisms, increases the attachment area and feeding place of the snails in the cage, and solves the problem that the snails in the hanging net can only scrape the bait at the bottom or the attachments on the four sides. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 : A three-dimensional picture of a hanging cage for cultivating seedlings of ring-shaped snails in ponds;

[0021] Figure 2 : A side view of a hanging cage for cultivating seedlings of ring-shaped snails in ponds;

[0022] Figure 3 : A cross-sectional view of a hanging cage for cultivating seedlings of a ring-shaped snail in a pond;

[0023] Figure 4 : A view of the upper cover of a hanging cage for cultivating seedlings of ring-shaped snails in ponds

[0024] Among them, 1-lower shell; 2-upper cover; 3-attachment plate; 4-buoyancy ball bracket; 5-connecting strip; 6-lower shell water-permeable hole; 7-lower shell reinforcement strip; 8-upper cover reinforcement strip; 9-upper cover water-permeable hole; 10-upper cover handle; 11-lower shell handle; 12-upper cover positioning column; 13-lower shell fixing hole. DETAILED DESCRIPTION

[0025] The present invention is described in detail below with reference to the examples. The embodiments disclosed herein are illustrative in all respects and are not restrictive. The scope of the present invention is not limited by the following embodiments, but is only limited by the scope of the claims, and includes all modifications within the scope of the claims and having the same meaning as the claims.

[0026] Unless otherwise defined, all 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.

[0027] A hanging cage for cultivating seedlings of ring-edge snails in a pond and a method for using the same, the hanging cage comprising a lower shell 1, an upper cover 2, an attachment plate 3 and a buoyancy ball bracket 4, the overall design of the hanging cage is an elliptical barrel shape, buoyancy ball brackets 4 are arranged on both sides of the lower shell 1, and the hanging cage floats on the water surface by adding buoyancy balls; attachment plates 3 are arranged in the cage to divide the space in the cage for independent breeding and management; the attachment plates 3 are stuck in the slots on both sides, and are connected by connecting strips 5 in between to reinforce the attachment plates 3; lower shell air holes 6 are evenly distributed around the lower shell 1 to facilitate the exchange of water inside and outside the cage during the snail breeding process; at the same time, lower shell reinforcement strips 7 are provided to reinforce the shell of the lower shell 1; similarly, upper cover water holes 9 are evenly distributed around the upper cover 2, and an upper cover reinforcement strip 8 is added; upper cover handles 10 and lower shell handles 11 are respectively arranged at corresponding positions at the edges of the two end sections of the upper cover 2 and the lower shell 1; at the same time, upper cover positioning columns 12 and lower shell fixing holes 13 are respectively arranged at corresponding positions at the edges of the middle of the upper cover 2 and the lower shell 1.

[0028] Preferably, all materials used to make the cage are plastic, and the buoyancy ball is plastic.

[0029] Preferably, the diameter of the water-permeable hole 9 of the upper cover and the water-permeable hole 6 of the lower shell is 2.7 mm.

[0030] The present invention discloses a method for using a hanging cage for cultivating snail seedlings in a pond: firstly, an attachment plate 3 is clamped in the slots on both sides of a lower shell 1, and the two are connected by a connecting strip 5; then, a buoyancy ball is installed on a buoyancy ball bracket 4, and the number of the buoyancy balls is adjusted according to the weight of snails released in the cage; finally, an upper cover 2 is covered, the entire hanging cage is placed in a breeding water body, and is tightened and fixed by a sling.

[0031] Example 1

[0032] A one-year (August 2022-August 2023) breeding experiment was conducted at the Guangxi Academy of Fisheries Sciences base in Nama Town, Nanning City, Guangxi Zhuang Autonomous Region. The experimental results are statistically shown as follows.

[0033] Table 1 Data comparison between cage breeding mode and traditional breeding mode

[0034] Stocking density Stocking amount Catch / year Capture rate Earthy smell Labor costs Cage breeding model 100 cages / mu / , 1 jin / cage 200 catties 1200 catties 95％ Light earthy smell 300 yuan / mu Traditional farming model 250 catties / mu 250 catties 600 catties 70％ Strong earthy smell 400 yuan / mu

[0035] Description: The breeding area is 1 mu, and large spiny loaches are raised in ponds.

[0036] Since the feeding method of ring-rimmed snails is scraping and filtering, the experiment of raising ring-rimmed snails in the main fish pond with hanging cages can reveal the advantages of the hanging cage farming model: 1. No additional feeding is required, and the main species are not affected, which can achieve water purification and reduce eutrophication of water bodies; 2. It can reduce predation by natural enemies such as birds, mice, tilapia, carp, etc.; 3. It can expand the breeding space. Snails generally crawl along the pond wall in the bottom mud to feed, and the hanging cage can expand the growth space. The hanging cage can filter algae in the pond, which increases the breeding density; 5. It can reduce the cost of manual snail collection. Generally, the collection of pond snails can only pick up the snails on the wall and along the coast, or manually pick up snails at the bottom after the pond is dried, but the habit of snails drilling mud will seriously affect the capture, and manual snail picking takes a long time; 6. The ring-rimmed snails cultured in hanging cages have a lighter mud smell because they do not scrape the bottom mud and drill mud, which saves the 2-3 days of sand spitting time before the snails are eaten.

Claims

1. A hanging cage for cultivating seedlings of ring-shaped snails in ponds and a method for using the same, characterized in that: The entire hanging cage comprises a lower shell (1), an upper cover (2), an attachment plate (3) and a buoyancy ball bracket (4). The overall design of the hanging cage is an elliptical barrel shape. The buoyancy ball brackets (4) are arranged on both sides of the lower shell (1). The hanging cage floats on the water surface by installing buoyancy balls. The attachment plates (3) are arranged in the cage to divide the space in the cage so as to facilitate independent breeding and management. The attachment plates (3) are stuck in the slots on both sides and are connected by connecting strips (5) to reinforce the attachment plates (3). The lower shell (1) is evenly and densely covered with lower shell air holes (6). The invention is to facilitate the exchange of water inside and outside the cage during the snail breeding process; at the same time, a lower shell reinforcement strip (7) is provided to reinforce the shell of the lower shell (1); similarly, upper cover water permeable holes (9) are evenly and densely distributed around the upper cover (2), and an upper cover reinforcement strip (8) is additionally provided; an upper cover handle (10) and a lower shell handle (11) are respectively provided at corresponding positions at the edges of the two end sections of the upper cover (2) and the lower shell (1); at the same time, an upper cover positioning column (12) and a lower shell fixing hole (13) are respectively provided at corresponding positions at the edges of the middle of the upper cover (2) and the lower shell (1).

2. A hanging cage for cultivating seedlings of a ring-shaped snail pond and a method for using the same according to claim 1, characterized in that: All materials used to make the cage are plastic, and the buoyancy ball is plastic.

3. A hanging cage for cultivating seedlings of a ring-shaped snail pond and a method for using the same according to claim 1, characterized in that: The diameter of the water-permeable hole (9) of the upper cover and the water-permeable hole (6) of the lower shell is 2.7 mm.

4. A hanging cage for cultivating seedlings of ring-shaped snails in ponds and a method of using the same, characterized in that: The method of use is to first clamp the attachment plate (3) in the grooves on both sides of the lower shell (1), and connect them via the connecting strip (5); then install the buoyancy ball on the buoyancy ball bracket (4), and adjust the number of buoyancy balls according to the weight of the snails in the cage; finally, cover the upper cover (2), place the entire hanging cage in the aquaculture water body, and tighten and fix it by using the sling.

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