JP3531931B1 - Annular animal breeding apparatus and method - Google Patents

Abstract

Abstract: PROBLEM TO BE SOLVED: To produce a device with a simple structure at a low cost, and to secure a wide feeding ground and to efficiently breed while utilizing the habit of an annelid to be bred. An annular animal rearing apparatus and an annular animal rearing method are provided. SOLUTION: A container 2 having a shelf 12 outside a side surface on which a plurality of window holes 15 are formed, a mesh portion 5 covering the inside of the container 2, and penetrating from the upper surface to the lower surface which is accommodated in the container 2 and penetrates. A plate-like body 3 having a plurality of holes 4, and a perforated plate 3 that forms a growth space for an annulus animal 9 at a lower portion thereof and allows movement between the upper surface and the growth space through the holes 4. Things.

Description

Detailed Description of the Invention 【Technical field】

[0001] The present invention is an apparatus and method for breeding annelids such as rotifers (also known as worms), oysters, and isomers, which serve as a bait for fishing. While utilizing the characteristics of annelids with a particularly simple structure. TECHNICAL FIELD The present invention relates to a ring-shaped animal breeding device and method for efficiently breeding it.

[Background technology]

[0002] For fishing, bait of ring-shaped animals such as rotifers, oysters, and isomers is indispensable. This bait may be collected at the mouth of a river or the like, but sometimes it takes a lot of time, but the yield is small. There are many things. For example, the inventor of the present application also discloses, in the past Patent Document 1, as a "rotary breeding device", a perforated plate having an appropriate thickness is installed at an appropriate place, and an invaded part made of sand or the like is provided below the perforated plate. A device for filling seawater is disclosed above it. According to this invention, bait such as seaweed is placed on the upper surface of the perforated plate to form a nest hole in the lower part of the perforated plate, so that the perforated plate can be clearly separated at the boundary, and the tank is always kept clean. However, there was an effect that sardines could be raised.

Further, Patent Document 2 discloses "a culture method for a long annelid for fishing bait, a culture tool, and a culture device" which utilizes the habit of burrowing burrows and the like to make burrows and live in them. . In this invention, at least the upper half of the pipe in which the larvae of the long-ringed animal are inserted into the aquarium is installed in an upright direction, and a shelf plate is provided near the open end of the pipe to supply food there. It is a thing. According to such an invention, the pipe can be grown as it is without any fear of being attacked by external enemies and can be efficiently cultured.

Furthermore, recently, in Patent Document 3, "a method for aquatic animal culture using circulating seawater and an aquarium system for aquatic animal culture", a seawater purification layer composed of polychaetes for treating feces and residual food of marine animals and inorganic salts. There is disclosed a method of cultivating marine animals by circulating seawater purified by the algae that treats the seaweed and feeding the marine animals with the algae. This is not for the main purpose of cultivating polychaetes contained in annelids.When culturing marine animals such as seafood, the used seawater of the aquaculture facility is not released to the environment, but rather polychaetes. And algae are used to treat the feces and residual feed of marine animals to circulate seawater. By this method, it is possible to circulate seawater, so that so-called aquaculture that is kind to the environment is possible, and at the same time, a kind of food chain is formed such that algae can be used as feed for marine animals.

[0005]

[Patent Document 1] Japanese Utility Model Laid-Open No. 54-104699

[Patent Document 2] Japanese Patent Laid-Open No. 58-13333

[Patent Document 3] Japanese Patent Laid-Open No. 11-56162

DISCLOSURE OF THE INVENTION [Problems to be Solved by the Invention]

However, in the invention disclosed in the above-mentioned Patent Document 1, the space in which the food is placed and the living space for the crocodile are separated by the perforated plate that partitions the inside of the tank, and the environment inside the tank is kept clean. However, there is a problem that the number of rotifers that can be bred in the tank is limited because the area in which the food is placed is smaller than the capacity in the tank.

Also in the invention disclosed in Patent Document 2,
Since the annelid larvae are inserted into each pipe, the range of action of the annelid is limited, and the feeding place is also limited.

[0008] In Patent Document 3, there is a case that the main purpose is not to culture polychaetes,
Since it is not aimed at a large number of aquaculture, but only at the processing of feces and residual food of marine animals, it is a viewpoint deviated from the viewpoint of efficient aquaculture of polychaetes. Also, from the perspective of processing marine animal dung and residual food,
It is considered that the treatment efficiency is good because the area for growing marine animals is provided in the seawater purification layer using polychaetes. However, with such a structure, when large vessels are needed for the cultivation of large marine animals, or when small-scale marine animals are used for large-scale cultivation, large polychaetes surrounding them are required. However, there is a problem that the overall aquaculture efficiency is not always high. Further, it is indispensable to install a pump or the like for circulating the seawater, and the system becomes complicated, and the load of maintenance is high, and it takes time and cost.

The present invention has been made in consideration of the above-mentioned conventional circumstances, and it is possible to manufacture a device with a simple structure at low cost, and further, while utilizing the habit of the annelid animal to be raised, An object of the present invention is to provide a ring-shaped animal breeding apparatus and a ring-shaped animal breeding method capable of ensuring a wide feeding area and efficient breeding.

[Means for Solving the Problems]

In order to solve the above-mentioned problems, in the annelid breeding apparatus according to claim 1 of the present invention, a container having a shelf portion on the outer side of the side surface having a plurality of window holes, and the inside of the container. A plate-like body that has a net portion that covers the inside of the container and a plurality of holes that are housed inside the container and that penetrate from the upper surface to the lower surface, and that forms a growth space for annelids underneath and moves between the upper surface and the growth space through the holes. It has a perforated plate that enables In the ring-shaped animal breeding apparatus having the above-described configuration, the bait can be placed not only on the upper surface of the perforated plate but also on the shelf provided on the side surface of the container. The upper surface of the perforated plate is one surface, but the side surfaces of the container are present on all four sides, so efficient feeding is possible. The net part allows the annelid to lean out the torso from the growth space and ingest the food on the shelf provided on the side of the container by expanding the gap between the fibers by its own force, and escape from the side of the container to the outside. It has the effect of holding the body of the annelid so that it will not be exposed. Annelids have the property of not exposing their entire body from such nets while exposing their heads, so half of the torso does not leave the entire body from the nets, and half of the torso lives in the growth space. It is left to eat food.

According to the ring-shaped animal breeding apparatus of the present invention as defined in claim 2, in the ring-shaped animal breeding apparatus according to claim 1, the growing space has a masa soil portion at a lower portion thereof and an upper surface of the masa soil portion. A sand part is arranged between the porous plate and the perforated plate to form a two-layer structure. In the ring-shaped animal breeding device having such a configuration, in addition to the action described in claim 1, the sand portion has an action of filling the gap between the lower surface of the perforated plate and the masa soil portion.

Further, in the method for breeding ring-shaped animals according to claim 3, soil or sand is put in the growth space of the ring-shaped animal breeding apparatus according to claim 1, and the ring-shaped animal breeding apparatus is used as a fish farming facility. After being immersed in the drainage channel, the ring-shaped animal is released on the upper surface of the perforated plate of the ring-shaped animal breeding apparatus. The ring-shaped animal breeding method with the above-mentioned configuration,
The invention described in 1. is regarded as a method invention, and at the same time as guiding the feces and residual food of the seafood released to the drainage channel of the fish farming facility from the upper side of the container of the annelid breeding apparatus to the upper surface of the perforated plate, It also has the effect of allowing fish dung and residual food to be deposited on the provided shelves. In addition, the perforated plate and the net part crawl out to feed the annelid animals such as rotifers living in the growth space through the holes drilled in the perforated plate or feed them to other annelid animals. By expanding the gap between the fibers, the body has the action of leaning out the body toward the shelf and feeding it.

【The invention's effect】

In the annelid breeding apparatus and the annelid breeding method of the present invention, the shelves provided on the side surfaces of the container and the net portion covered inside the container are combined to provide a simple structure and a large volume with a limited capacity. It is possible to efficiently breed the annelid animals. In particular, by covering the net portion inside the container, even if the annelid animal in the growing space leans out the torso on the shelf, the torso of the annelid animal can be held without completely exposing the torso. Further, particularly in the ring-shaped animal breeding apparatus according to claim 2, in the growing space, 2 of the masa soil portion and the sand portion are provided.
By forming the layered structure, the gap on the lower surface of the perforated plate, which is formed when only the masa soil is formed, can be filled with the sand portion having finer mesh than the masa soil. Since annelids cannot form burrows in hollow spaces that cannot support the body without soil or sand, this sand part facilitates burrowing of annelids at the bottom of the perforated plate. As described above, by utilizing the habit of annelid animals or by adopting a configuration that conforms to the habits, more efficient annelid animal breeding can be carried out.

BEST MODE FOR CARRYING OUT THE INVENTION

A ring-shaped animal breeding apparatus and a ring-shaped animal breeding method according to an embodiment of the present invention will be described below with reference to FIGS. 1 to 5. FIG. 1 is an external view of a rotifer breeding apparatus according to an embodiment of the present invention. In FIG. 1, the rotifer breeding apparatus 1 covers the inner surface of the main body container 2 with a net portion 5, and lays soil or sand there to form a growth space for the rotifer 9. A perforated plate 3 having a plurality of holes 4 is installed above the growth space. A window hole 15 is formed by a horizontal plate 10 and a vertical plate 11 on four side surfaces of the main body container 2 so that the inside and the outside of the main body container 2 are communicated with each other. From this window hole 15, the net portion 5 covering the inner surface of the main body container 2 can be seen. However, the mesh of the mesh part 5 is not coarse, and as will be described later, the worms 9 can shift the fibers in the vertical and horizontal directions to embark on the trunk, so that the soil and sand that form the growth space will not grow. It does not leak from the mesh portion 5 so easily. Further, outside the side surface of the main body container 2, two stages of food racks 12, 12 are provided, and an edge 13 is provided at the end thereof.

A rotifer breeding apparatus 1 configured as described above
Submerges in estuaries, rocky shores, and harbors, or, as described later with reference to Figure 5, uses the feces and residual food of seafood contained in the aquaculture water drained from facilities such as fish farms. It will be installed in the drainage channel of the farm. Therefore, as shown in FIG. 1, the water 6 is sufficiently supplied to the inside of the main body container 2 in a normal breeding state.

Here, a description of the breeding method using the rotifer breeding apparatus 1 will be added. The inner surface of the rotifer breeding apparatus 1 is covered with a net 5, and then soil or sand
What is capable of forming a growth space is put, and the perforated plate 3 is laid on top of it. After laying the perforated plate 3, larvae and adults of the rotifer 9 are released on the perforated plate 3. When soaked in water in this state or installed in the drainage channel of the aquaculture farm, the crocodile 9 digs a nest hole from the hole 4 of the perforated plate 3 into the growing space. It is considered necessary to sprinkle food at the beginning of installation, but the frequency of sprinkling may be reduced by gradually growing the sea bream 7 and other seaweed 8 on the upper surface of the perforated plate 3 and the feed rack 12. This is also the case when the aquaculture effluent contains abundant food. The rotifer 9 emerges from the body through the hole 4 formed on the perforated plate 3 and ingests seaweed 8 and Ulva 7 that grow on the surface of the perforated plate 3 as food. Further, holes are made while shifting the fibers of the net portion 5 from inside the growth space formed below the perforated plate 3, and the trunk is pushed out to the side of the food shelf 12 from which the sea bream 7 and other foods grown on the food shelf 12 are formed. It is also possible to eat seaweed 8 or food 14 discharged from the farm.

The rotifer breeding apparatus 1 according to the present embodiment is not particularly limited to the rotifer 9 and can be used for breeding all ring-shaped animals such as larvae and isomers. The material of the main body container 2 is not particularly limited, but it is preferable that the material is a durable material that does not corrode even when immersed in seawater or fresh water for a long time, for example, a synthetic resin material. . Furthermore, the size and number of the window holes 15 formed on the side surface are not particularly limited, but the window hole 1
Since the crocodile 9 projects the body from 5 through the net portion 5, a certain size and number are required. That is,
Since the area of the window hole 15 is related to the evacuation of the rotifer 9 to the food rack 12 and affects the feeding efficiency, it is desirable to secure a sufficient window hole 15 in accordance with the number of the rotifer 9 raised. . It is preferable that the number of the food racks 12 is appropriately adjusted according to the number of breeding worms 9 such as the illustrated two to three tiers, four tiers, or one tier.

FIG. 2 is a sectional view taken along the line AA shown in FIG. In FIG. 2, the same parts as those in FIG. 1 are designated by the same reference numerals, and the description of the configuration will be omitted. The growth space for the rotifer 9 is composed of sand 22 just below the perforated plate 3.
It is a layer made of and the layer of masa soil 21 which constitutes the lower layer. The two-layer structure is originally because the layer of masa soil 21 is suitable for the growth of rotifer 9, but masa soil 21 is granite and is composed of quartz, feldspar, and mica and has a coarse-grained structure. , Unevenness is likely to remain on the surface. If the perforated plate 3 is laid while leaving the unevenness on the surface of the soil, voids will be formed between the soil and the perforated plate 3. Since the rotifer 9 has a habit that it is difficult to form a nest in a void without soil or sand, it is desirable for breeding the rotifer 9 to eliminate such unevenness and to make it adhere to the perforated plate 3. Therefore, Masa soil 2
A layer of fine sand 22 is formed on the upper side of 1 and made flat, and the perforated plate 3 is laid there. By doing so, the layer of sand 22 and the perforated plate 3 are brought into close contact with each other, and the rotifer 9
Enters the layer of sand 22 through the holes 4 and makes it easier to dig the burrows 20.

Further, not only the upper surface of the perforated plate 3 but also the food racks 12 provided around the perforated plate 7 and the seaweed 8 or the remaining food 14 discharged from the farm is accumulated.
More efficient feeding. While displacing the mesh fibers of the mesh portion 5, the rotifer 9 makes a hole and can lean on the food rack 12 to eat the food 14, so that it can be rearranged in a three-dimensional manner. Further, since there is a window 15 formed by the horizontal plate 10 and the vertical plate 11, it is possible to circulate water with the outside, so that maintenance such as regular water exchange is unnecessary, and the drainage channel of the fish farm When it is installed in such a place, the labor of feeding the food 14 can be saved, and the burden and time of the worker can be reduced. The edge 13 is installed once for the food shelf 1
This is to prevent spillage of the food 14 and the like accumulated in 2 so that sufficient feeding is always possible.

Next, with reference to FIG. 3 and FIG. 4, description will be added on how the worms 9 shift the fibers of the mesh portion 5. FIG. 3 is an enlarged view of the portion B shown in FIG. 1, and FIG. 4 is an enlarged view schematically showing the fiber surface of the net portion. In FIG. 3, the mesh portion 5 that can be seen from between the vertical plates 11 is composed of vertical fibers 5a and horizontal fibers 5b. The weaving of the longitudinal fibers 5a and the transverse fibers 5b is as shown in FIG. 4, for example. The rotifer 9 is attracted by the odor of the food 14 accumulated on the food shelf 12 from the growth space formed inside the main body container 2 and tries to lean out the trunk from the net portion 5. In the normal state, the mesh portion 5 has no coarse mesh, so that masa soil or sand does not spill from the inside. Rotifer 9 in such a state
Rub the head from the inside to the surface of the mesh portion 5,
And put a head in the small mesh formed between the horizontal fiber 5b and
The longitudinal fibers 5a and the transverse fibers 5b are gradually shifted to the periphery to form holes. Open a hole to the extent that your torso comes out, and then lean out the torso 12 from the torso. At that time, as a habit of the rotifer 9, all the bodies are not exposed from masa soil or sand. Therefore, there is no fear of escaping to the external environment or being swept by an external water stream.
The sea bream 7 and other seaweed 8 and food 14 on the food rack 12 are ingested with the body left half out of the net 5. Therefore, the net part 5 is accompanied by masa soil and sand, and the rotifer 9
It also has the function of holding the body of the car.

After ingesting the food 14, the rotifer 9 returns to the soil, sand or the like again. When the body and head are completely hidden from the net portion 5, the holes formed by the worms 9 will be clogged with time, and a large amount of soil or sand will not leak out from there. The material of the net portion 5 may be a plant material or a synthetic fiber, and the coarseness of the fibers may be such that the fibers can be displaced to allow a ring-shaped animal such as the rotifer 9 to project its torso.

Finally, referring to FIG. 5, a case where the rotifer breeding apparatus 1 is immersed in the drainage channel of a seafood farm will be described. FIG. 5 is a conceptual diagram showing a state in which the rotifer breeding apparatus according to the present embodiment is immersed in the drainage channel. 5, the same parts as those in FIG. 1 are designated by the same reference numerals, and the description of the structure will be omitted. The sardine breeding apparatus 1 is equipped with fixtures 27 at four locations on the upper part of the main body container 2, and two supporting members 25 are inserted into this, passed to the shore 24, and hung and supported. A block 28 is laid on the lower part and is also supported from the lower part. In the present embodiment, a method of suspending and supporting and simultaneously supporting the block 28 from below is adopted,
These are basically independent methods, and either one may be used in consideration of the load of the main body container 2 or the like and the state of the installation place. The aquaculture farm is drained from the direction of the water flow indicated by reference numeral 29, and is immersed in the drainage 26. Since a window hole is formed on the side surface of the main body container 2,
It is possible to cause water to enter from the side surface of the main body container 2 even if it does not enter. Further, in FIG. 1, the position of the upper end portion of the net portion that covers the inner surface of the main body container 2 remains below the upper end portion of the main body container 2, but if this is aligned with the upper end portion of the main body container 2. When the water level in the drainage channel 23 is lower than the upper end of the main body container 2, food from the aquaculture plant does not enter from the upper surface or the side surface of the main body container 2. Therefore, the bait can be deposited only on the bait rack 12, and unnecessary bait is not taken in on the upper surface of the perforated plate 3 to prevent environmental deterioration due to decay. That is, it is possible to adjust the feeding amount while considering the number of rotifers 9 bred in the rotifer breeding apparatus 1.

The position of the fixing member 27 can be adjusted in the depth direction within the drainage channel 23 of the main body container 2 by making the depth of the fixing member 27 adjustable or by providing the support member 25 with a step. Of course, the height of the block 28 may be adjusted to be large or small. It is also useful to form a groove or the like for fixing the support member 25 on the shore 24.

[Industrial availability]

The ring-shaped animal breeding apparatus and ring-shaped animal breeding method according to the present invention can be used for breeding other ring-shaped animals in addition to rotifers. Not only for hobby breeding, but depending on the size and number of main vessels, it can be used as a ring-shaped animal farm for fishing baits. In that case, for example, it can be expected to be used as a treatment facility for residual bait and feces by adjoining it to a drainage facility of a fish farm for seafood.

[Brief description of drawings]

[0025]

FIG. 1 is an external view of a rotifer breeding apparatus according to the present embodiment.

FIG. 2 is a cross-sectional view taken along the line AA shown in FIG.

FIG. 3 is an enlarged view of a portion B shown in FIG.

FIG. 4 is an enlarged view schematically showing the fiber surface of the net portion of the annelid breeding apparatus according to the present embodiment.

FIG. 5 is a conceptual diagram showing a state in which the rotifer breeding device according to the present embodiment is immersed in a drainage channel.

[Explanation of symbols]

1 ... rotifer breeding device 2 ... main body container 3 ... perforated plate 4
... Hole 5 ... Net 5a ... Vertical fiber 5b ... Horizontal fiber 6 ... Water 7 ... Seaweed 8 ... Seaweed 9 ... Rockworm 10 ... Horizontal plate
11 ... Vertical plate 12 ... Food shelf 13 ... Edge 14 ... Food 15
… Window hole 20… Nest hole 21… Masa soil 22… Sand 23…
Drainage channel 24 ... shore 25 ... supporting member 26 ... drainage 27
… Fixing device 28… Block 29… Water flow direction

─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-55-88639 (JP, A) JP-A-54-15885 (JP, A) JP-A-9-149742 (JP, A) JP-A-2- 113837 (JP, A) JP 60-9439 (JP, A) JP 5-95744 (JP, A) JP 60-2128 (JP, A) Actual development 54-104699 (JP, U) (58) Fields surveyed (Int.Cl. ⁷ , DB name) A01K 61/00 A01K 67/033

Claims (3)

(57) [Claims] 1. A container provided with a shelf portion on the outside of a side surface having a plurality of window holes, a net portion covering the inside of the container, and a plurality of holes housed in the container and penetrating from the upper surface to the lower surface. 1. An annelid breeding apparatus, which is a plate-shaped body and has a perforated plate which forms a growth space for annelids at a lower portion thereof and enables movement between the upper surface and the growth space through the holes. 2. The growth space forms a two-layer structure by arranging a masa soil portion at a lower portion and arranging a sand portion between an upper surface of the masa soil portion and the perforated plate. Ring-shaped animal breeding device. 3. The ring-shaped animal breeding apparatus according to claim 1, wherein soil or sand is put into the growth space of the ring-shaped animal breeding apparatus, and the ring-shaped animal breeding apparatus is immersed in the drainage channel of the fish farming facility. A method for raising a ring-shaped animal, which comprises releasing the ring-shaped animal on the upper surface of the perforated plate.