WO2021157717A1

WO2021157717A1 - Cricket growing device and cricket growing method

Info

Publication number: WO2021157717A1
Application number: PCT/JP2021/004408
Authority: WO
Inventors: 崇人渡邉; 太郎三戸
Original assignee: 株式会社グリラス
Priority date: 2020-02-07
Filing date: 2021-02-05
Publication date: 2021-08-12
Also published as: JPWO2021157717A1

Abstract

Provided is a cricket growing device that may efficiently cultivate crickets. The cricket growing device 100 comprises: a floor surface 10; and a plurality of wall parts 61 that are a plurality of flat plates held in an upright posture on the floor surface 10 and intersect each other to partition a rectangular growing space 62 into a plurality of parts in a plan view, wherein the plurality of growing spaces 62 are configured so that one or more crickets can vertically move up and down in each internal space defined by the wall parts 61, some of the plurality of wall parts 61 are in contact with the floor surface 10, and the other of the plurality of wall parts 61 are separated from the floor surface 10.

Description

Cricket breeding device and cricket breeding method

The present invention relates to a cricket growing device and a cricket growing method.

The global food crisis due to future population growth is being called out. Especially in Japan, many foods are imported from foreign countries, and stable food procurement is being called for due to the future decrease in the working-age population and the double shackles of the super-aging society. Under these circumstances, insect foods are being studied in addition to or as an alternative to conventional animal foodstuffs such as livestock. Among them, crickets are attracting attention because of their high nutritional value and ease of breeding. For example, Ryohin Keikaku Co., Ltd., which develops MUJI products all over Japan and overseas, issued a press release saying that it plans to sell rice crackers kneaded with dried cricket powder provided by the applicant of the present application, Tokushima University. However, it has attracted a great deal of attention (see Non-Patent Document 1).

However, at present, because it is in the research stage, small-scale cultivation is being carried out at the laboratory level, and the current situation is that aquaculture technology for efficiently mass-producing crickets as food has not been established. (Patent Document 1 etc.).

WO2014 / 046529

The present invention has been made in view of such a current situation. One of the objects of the present invention is to provide a cricket growing device and a cricket growing method capable of efficiently culturing crickets.

Means for Solving Problems and Effects of Invention

In order to achieve the above object, according to the cricket growing device according to the first aspect of the present invention, the floor surface and a plurality of flat plates held in an upright posture on the floor surface are rectangular in a plan view. The plurality of growing spaces are provided with a plurality of wall portions intersected so as to divide a plurality of growing spaces of the shape, and in each of the plurality of growing spaces, one or more crickets vertically enter each internal space defined by the wall portions. It is configured to be able to move up and down, and a part of the plurality of wall portions is in contact with the floor surface, and the other part of the plurality of wall portions can be separated from the floor surface. With the above configuration, by holding crickets in a plurality of growing spaces extended in the vertical direction instead of the horizontal direction, a space-efficient growing environment is realized in a limited floor area. In addition, crickets on the floor can climb upward along the wall from the part of the wall that is in contact with the floor, making it easy for crickets to move and stay in the vertical direction. Is realized. On the other hand, it is possible to move to another growing space in the part of the wall part that is separated from the floor surface. As a result, each of the plurality of crickets put into the cricket breeding device can move to a desired breeding space, so that the situation where the crickets are concentrated in a specific breeding space and become overcrowded is avoided, and the occurrence of cannibalism is avoided. An environment that is easy to grow is realized, and the yield is expected to improve.

Further, according to the cricket growing device according to the second side surface, in addition to the above configuration, another part of the plurality of wall portions can be separated from the floor surface by 1 cm to 3 cm. With the above configuration, the movement of crickets across the wall can be allowed.

Further, according to the cricket growing device according to the third side surface, in addition to any of the above configurations, the wall portion can be formed in a mesh shape. With the above configuration, by making the wall portion mesh-like, it is possible to provide a hooking position where crickets can be easily grasped by the feet, and it is possible to easily move up and down in the growing space. In addition, the mesh shape enhances the air permeability inside the cricket growing device, making the humidity uniform and improving hygiene.

Furthermore, according to the cricket growing device according to the fourth aspect, in addition to any of the above configurations, the floor surface can be configured to be openable and closable. With the above configuration, by opening the floor surface, cricket droppings and carcasses can be easily discharged, and separation from live crickets becomes easy.

Furthermore, according to the cricket growing device according to the fifth side surface, in addition to any of the above configurations, a slit through which the plurality of wall portions can be inserted is further formed, and the plurality of walls are formed in the slit. A scraping plate formed by crossing the upright directions of the plurality of wall portions so as to be slidable in a state where the portions are inserted, and a top surface having the upper ends of the plurality of wall portions through which the scraping plates are inserted are fixed. Can be provided. With the above configuration, by pulling up the top surface with multiple wall parts inserted through the scraping plate, it is possible to scrape off the crickets attached to the wall part with the scraping plate, and the living crickets can be scraped off to the wall. There is an advantage that the work of peeling from the portion can be easily performed.

Furthermore, according to the cricket growing device according to the sixth aspect, in addition to any of the above configurations, the size of one square of the plurality of growing spaces can be formed to be 2 cm to 4 cm on a side. With the above configuration, a sufficient size is secured so that the grown crickets can change direction on the inner surface of the growing space, and an environment in which the grown crickets can move up and down along the wall portion is realized.

Furthermore, according to the cricket growing device according to the seventh side surface, the floor surface, a plurality of wall portions held in an upright position on the upper surface of the floor surface, and trays arranged on the lower surface of the floor surface. The floor surface is provided with a first floor plate having a plurality of first openings having a predetermined inner diameter and a solid, flat plate-shaped second floor plate, through which the grown crickets pass. The second floor plate is formed in a size that allows cricket manure to pass through, and by arranging the second floor plate so as to overlap the first floor plate, the plurality of first openings are closed and the plurality of first floor plates can be freely inserted and removed. The first opening of the above can be switched to the open state. With the above configuration, cricket droppings can be collected in a tray through a first opening opened in the floor surface. On the other hand, since the larvae of the crickets that have just hatched are smaller than the feces, the problem that they would pass through the first opening and fall into the tray if they were left as they were, until the crickets grew to a certain size. Can be avoided by temporarily closing the first opening by arranging the second floor boards in an overlapping manner. In particular, this method eliminates the need to grow crickets to some extent and put them into the cricket growing device after they have grown larger than the first opening, and even freshly hatched crickets can be put into the cricket growing device. Productivity is also improved by eliminating the need to prepare a separate hatching device for growing crickets to a certain size.

Furthermore, according to the cricket growing device according to the eighth side surface, the inner diameter of the first opening can be 0.5 mm to 3 mm in addition to any of the above configurations.

Furthermore, according to the cricket growing device according to the ninth side surface, in addition to any of the above configurations, the first floor plate can be made of punching metal to form the plurality of first openings.

Furthermore, according to the cricket growing device according to the tenth side surface, a rectangular floor surface, a water supply portion arranged at the first end edge of the floor surface, and the first end edge of the floor surface. A housing having a feeding portion arranged at the opposite second end edge can be provided. With the above configuration, it is possible to easily secure an area for eating food by separating the feeding area and the drinking fountain from the habit of carrying the food to another place instead of eating it on the spot. In addition, since the feeding section and the water feeding section are adjacent to each other, it is possible to avoid the problem that the food is easily spoiled, and improvement in hygiene can be expected.

Furthermore, according to the cricket breeding apparatus according to the eleventh aspect, in addition to any of the above configurations, a feeding interface for connecting the feeding unit to the feeding unit of another housing and the water supply unit are further provided. The unit is provided with a water supply interface for connecting the unit to the water supply unit of another housing, the housing is configured to be connectable to a plurality of the housings, and the plurality of connected housings are adjacent to each other. The feeding interfaces can be connected to each other, and the water supply interfaces can be connected to each other. With the above configuration, it is possible to connect a plurality of housings to connect the cricket growing devices to each other, and it is possible to control the feeding mechanism and the water supply mechanism in common by a large number of cricket growing devices. It is also possible to unitize the cricket growing device, adjust the number of connected units according to the required cricket production amount, and adjust the cricket production amount.

Furthermore, according to the cricket growing device according to the twelfth side surface, in addition to any of the above configurations, an opening is formed on the side surface of the housing, and the opening is made of a covering member having breathability. Can be covered. With the above configuration, it is possible to prevent flies from invading the inside through the opening on the side surface and to avoid the occurrence of maggots.

Furthermore, according to the cricket growing device according to the thirteenth side surface, in addition to any of the above configurations, a leg portion for separating the housing from the installation surface can be further provided. With the above configuration, the housing can be installed away from the installation surface, the workability of the user is improved, and the vibration of the mechanical drive member such as the water supply unit is propagated to the housing. It can be reduced and a comfortable breeding environment can be realized.

Furthermore, according to the cricket breeding method according to the fourteenth aspect, a step of putting the cricket larvae into the cricket breeding apparatus and a step of harvesting the cricket larvae at the stage where the cricket larvae repeatedly molt and finish the seventh molting. Can be included. With the above configuration, crickets can be harvested in good yield.

Furthermore, according to the cricket breeding apparatus according to the fifteenth aspect, in addition to any of the above configurations, the determination of the stage after the seventh molting of the cricket is managed by the number of days after the cricket hatches. can do. As a result, by managing the growing stage of crickets by the number of days, it is possible to easily grasp the timing of harvesting.

Furthermore, according to the cricket growing device according to the sixteenth side surface, a first floor plate having a plurality of first openings having a predetermined inner diameter and a solid, flat plate-shaped first floor plate arranged so as to overlap the first floor plate. A step of preparing a cricket growing device including a floor surface including two floor boards, a plurality of wall portions held in an upright position on the upper surface of the floor surface, and trays arranged on the lower surface of the floor surface. By arranging the second floor board so as to overlap with the first floor board, a step of throwing a plurality of hatched cricket larvae onto the floor surface in a state where the plurality of first openings are closed, and a step of growing the cricket. When most of them are larger than the first opening, the second floor plate is pulled out to open the plurality of first openings so that cricket manure passes through the first opening and falls onto the tray. And can be included. As a result, cricket droppings can be collected in a tray through the first opening opened on the floor surface. On the other hand, since the larvae of the crickets that have just hatched are smaller than the feces, the problem that they would pass through the first opening and fall into the tray if they were left as they were, until the crickets grew to a certain size. Can be avoided by temporarily closing the first opening by arranging the second floor boards in an overlapping manner. In particular, this method eliminates the need to grow crickets to some extent and put them into the cricket growing device after they have grown larger than the first opening, and even freshly hatched crickets can be put into the cricket growing device. Productivity is also improved by eliminating the need to prepare a separate hatching device for growing crickets to a certain size.

It is a schematic side view which shows the cricket breeding apparatus which concerns on Embodiment 1. FIG. It is a schematic cross-sectional view which shows the water supply part of the cricket growing apparatus of FIG. It is a schematic side view which shows the cricket breeding apparatus which concerns on a modification. It is a schematic front view which shows the state which connects a plurality of cricket growing devices. It is a perspective view which shows the inside of the housing of the cricket growing apparatus which concerns on Embodiment 2. It is a perspective view which shows the space between the wall part and the floor surface of FIG. It is a horizontal cross-sectional view which shows the gap formed on the floor surface. It is a perspective view which shows the gap formed on the floor surface which concerns on a modification. It is a horizontal cross-sectional view which shows the gap formed on the floor surface of FIG. It is a perspective view which shows the gap formed on the floor surface which concerns on other modification. It is a perspective view which shows the gap formed on the floor surface which concerns on another modification. It is a perspective view which shows the gap formed on the floor surface which concerns on another modification. It is a perspective view which shows the cricket breeding apparatus which concerns on Embodiment 3. It is a perspective view which shows the state which raised the top surface of the cricket breeding apparatus of FIG. It is a front view of the cricket breeding apparatus of FIG. It is a right side view of the cricket breeding apparatus of FIG. It is a perspective view which shows the state which pulled out the floor surface from a housing. FIG. 18A shows a state in which live crickets cling to the wall surface and dead crickets and feces remain on the floor surface. FIG. 18B shows a state in which the floor surface is pulled out from the state shown in FIG. FIG. 18C shows the state where the floor surface is returned from FIG. 18B, FIG. 18D shows the state where the wall surface is pulled up and the live crickets are scraped off to the floor surface, and FIG. 18E shows the state where the floor surface is pulled out and the live crickets are harvested. , Each is a schematic side view. It is a side view which shows the cricket breeding apparatus which concerns on a modification. It is a perspective view which shows the cricket breeding apparatus which concerns on Embodiment 4. 21A is a schematic cross-sectional view showing the cricket growing apparatus according to the fourth embodiment, and FIG. 21B is a schematic cross-sectional view showing a state in which the tray is removed from FIG. 21A. It is a schematic cross-sectional view which shows the cricket growing apparatus which concerns on a modification. It is a graph which shows the growth days and the body weight of a cricket.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. However, the embodiments shown below exemplify the configuration for embodying the technical idea of the present invention, and the present invention is not specified as the following. Further, the present specification does not specify the members shown in the claims as the members of the embodiment. In particular, the dimensions, materials, shapes, relative arrangements, etc. of the components described in the embodiments are not intended to limit the scope of the present invention to the specific description, and are merely explanatory examples. It's just that. The size and positional relationship of the members shown in each drawing may be exaggerated to clarify the explanation. Further, in the following description, members having the same or the same quality are shown with the same name and reference numeral, and detailed description thereof will be omitted as appropriate. Further, each element constituting the present invention may be configured such that a plurality of elements are composed of the same member and the plurality of elements are combined with one member, or conversely, the function of one member is performed by the plurality of members. It can also be shared and realized.
[Embodiment 1]

Hereinafter, the cricket growing apparatus according to the first embodiment of the present invention is shown in the side view of FIG. The cricket growing device 100 shown in this figure has a housing 1 having a floor surface 10 and a top surface 20 and an outer wall 30 located between them, and a feeding unit 40 for feeding crickets in the housing 1. And a water supply unit 50 for supplying water is provided. By throwing crickets into the housing 1, feeding water to the water supply section 50, and feeding the feeding section 40, the crickets are cultivated by eating food at the feeding section 40 and drinking water at the feeding section 40. NS.

Feeding and watering are required to grow crickets. For this reason, it is necessary to provide a drinking fountain and a feeding area in the cricket breeding device. Conventionally, in order to reduce the space required for cricket breeding, in other words, to meet the demand for miniaturization of the cricket breeding device, these are used. The drinking fountain and the feeding area were placed close to each other.

However, according to the research by the present inventors, it was found that crickets have a habit of carrying food to another place instead of eating it at the feeding area. For this reason, when the feeding area and the watering area are brought close to each other, the food is carried to the watering area and eaten, and the food is corroded by water to cause mold. However, if the feeding area and the watering area are separated too much, the crickets will travel a long distance to the feeding area and the watering area, avoiding such long-distance travel and eating another cricket nearby. It was also found by the studies of the present inventors that there is a risk of cannibalism.

Therefore, as a result of considering the balance with the requirement that the movement distance of crickets should not be exceeded while separating the feeding area and the water supply area to some extent, the two opposite sides of the bottom surface of the cricket growing device in a rectangular shape in a plan view. It was found that good results can be obtained by arranging the feeding section and the water supply section, respectively. According to this configuration, since crickets have a habit of carrying food to another place instead of eating it on the spot and eating it, it is possible to easily secure an area for eating food by separating the feeding area and the drinking fountain. In addition, since the feeding section and the water feeding section are adjacent to each other, it is possible to avoid the problem that the food is easily spoiled, and improvement in hygiene can be expected.

In the cricket growing device 100 according to the first embodiment configured from such a viewpoint, as shown in FIG. 1, the housing 1 includes a rectangular floor surface 10 and an outer wall 30. A water supply unit 50 and a feeding unit 40 are provided in the housing 1. The water supply unit 50 is arranged on the first end edge (right side in the example of the figure) of the floor surface 10. On the other hand, the feeding unit 40 is arranged on the floor surface 10 at the second end edge (left side in the example of the figure) facing the first end edge. With such a configuration, it is possible to easily secure an area for eating food by separating the feeding area and the drinking fountain from the habit of carrying the food to another place instead of eating it on the spot. Further, since the feeding unit 40 and the water supply unit 50 are adjacent to each other, it is possible to avoid the problem that the food is easily spoiled, and improvement in hygiene can be expected.

The feeding unit 40 is provided in a gutter shape along the outer wall 30 of the housing 1, for example. In the example of FIG. 1, the feeding port 41 opened above the housing 1 and the feeding section 40 are communicated with each other. The user feeds the food to the feeding unit 40 by feeding the food from the food inlet 41.

Further, the side surface of the housing 1 facing the feeding unit 40 may be openable. In this case, the user manually releases the side surface and feeds the food into the gutter-shaped feeding unit 40. Alternatively, the bait may be automatically dropped at a predetermined time. As a result, labor can be saved by eliminating manual labor. For feed, feed for ornamental fish and farmed fish can be used.

The water supply unit 50 allows water to flow through a water supply path 51 such as a pipe or a gutter, hangs one end of a water absorption member 52 such as a woven cloth or a non-woven fabric on the water supply path 51, and puts the other end on the housing side, for example, on the floor surface. It is configured to be pulled out. As an example, a water supply unit 50 using such a water absorbing member 52 is shown in a schematic cross-sectional view of FIG. In this example, the lower end of the water member 52 fixed in a vertical posture along the outer wall 30 of the housing 1 is immersed in the water supply path 51. On the other hand, a window portion 31 is opened in the outer wall 30 of the housing 1, and the water absorbing member 52 is exposed in the window portion 31. As a result, the cricket can safely drink water from the moist water absorbing member 52 exposed on the window portion 31, and can avoid a situation in which the cricket falls into a gutter-shaped water supply path 51 or the like and drowns. The water supplied to the water supply unit 50 is preferably circulated. The water temperature is preferably 28 ° C. to 32 ° C. (about the same as room temperature).

Further, the housing 1 may be placed directly on the floor surface 10 or may be arranged apart from the floor surface. Such a configuration is shown in FIG. The cricket growing device 100'shown in this figure has legs fixed to the housing 1'to be separated from the installation surface. In this way, the housing 1'can be installed away from the installation surface, the workability of the user is improved, and the vibration of the mechanical drive member such as the circulation pump constituting the water supply unit 50 is improved. Can be reduced to propagate to the housing 1', and a comfortable growing environment can be realized.

Furthermore, a plurality of housings 1 can be connected. The size of the housing 1 determines the number of crickets that can be grown. It has been clarified by the tests of the present inventors that the number of harvests does not increase even if a certain amount of crickets are placed in a limited volume. Therefore, in order to increase the number of harvests, it is necessary to increase the volume, but if a housing having a size corresponding to the required number of harvests is specially designed, the manufacturing cost of the cricket growing device will be high. Therefore, by unitizing a housing having a predetermined size and making it connectable, it is possible to grow different numbers of crickets, and it is possible to standardize the housing and reduce the manufacturing cost.

By configuring the housing 1 in a horizontally long rectangular parallelepiped shape, it is possible to make it easy to stack a plurality of cricket growing devices. Further, when a plurality of cricket growing devices 100 are adjacent to each other, the feeding units 40 and the water supply units 50 may be connected to each other. In the example shown in FIG. 4, the water supply unit 50 of each housing 1 is provided with a water supply interface for connecting to the water supply unit 50 of another adjacent housing 1. As the water supply interface, a valve or the like that connects the end of a pipe through which water flows can be used. As a result, it is possible to standardize the flow path of water, manage the circulation of water in an integrated manner, and simplify the configuration and maintenance. Further, the water absorbing member 52 may be provided for each housing 1 or may be a common water absorbing member in a plurality of housings laminated in the vertical direction.

Similarly, the feeding section may be shared. For example, the feeding unit can be provided with a feeding interface for connecting to the feeding unit of another housing. As a result, the feeding interfaces can be connected to each other between adjacent housings, and the feeding mechanism can be shared. In this way, a plurality of housings 1 can be connected to connect the cricket growing devices to each other, and the feeding mechanism and the water supply mechanism can be controlled in common by a large number of cricket growing devices. It is also possible to unitize the cricket growing device, adjust the number of connected units according to the required cricket production amount, and adjust the cricket production amount.
(Coating member 34)

Further, as shown in FIG. 1, an opening 32 is formed in the outer wall 30 of the housing 1. The opening 32 is covered with a breathable covering member 34. With this configuration, it is possible to prevent flies from invading the inside through the opening of the outer wall 30, and to avoid the occurrence of maggots. In particular, in a configuration in which a woven cloth is used for the water supply unit 50, mold and germs are likely to be generated due to humidity, and the environment is such that flies are likely to spawn and maggots are likely to be generated. Therefore, the opening 32 can be closed to prevent the invasion of flies, and the air permeability can be ensured to maintain a hygienic environment. As the covering member 34, for example, a mesh material having a diameter of 0.3 to 0.6 mm, a grid-like member provided with a slit, or the like can be used. Further, it is preferable to maintain the temperature inside the housing 1 at 28 ° C. to 32 ° C. (same as room temperature, which may be controlled in the entire room) and the humidity at about 30% to 50%.
[Embodiment 2]

As a cricket's habit, it tends to be uncomfortable in places where there is only a flat surface or in a wide place, and wants to hide in a narrow place. For this reason, conventional cricket breeding requires a large space to some extent, which is provided with a space for arranging newspapers, fibers, etc. to hide them, and a plastic transport case or the like has been used. On the other hand, if too many crickets are put in the case, there is a risk of cannibalism.

Against this background, the present inventors have diligently researched a method capable of efficiently generating a large number of crickets in a limited space. As a result of diligent research on the ecology of crickets, they found that they have a habit of climbing upwards, so they can grow comfortably in a narrow space that is elongated in the vertical direction. Based on this knowledge, the cricket growing device was configured to form a plurality of spaces elongated in the vertical direction instead of the horizontal direction. As a result, a large number of cricket growing spaces can be divided in one cricket growing device, and a large number of crickets can be grown within a limited volume by allowing several crickets to fit in each growing space, and a plurality of crickets can be grown. By partitioning into spaces, the risk of cannibalism due to crowding can be reduced.

The inside of the housing 1 of the cricket growing device 200 according to the second embodiment is shown in the perspective view of FIG. In the cricket growing device 200 shown in this figure, a flat plate-shaped wall portion 61 is arranged in a partition shape in the housing 1, and a plurality of growing spaces 62 for growing crickets are partitioned. Here, while holding the wall portion 61 on the floor surface 10 in an upright posture, a plurality of growing spaces 62 are formed by crossing a plurality of the wall portions 61. In the example of FIG. 5, the growing space 62 is formed in a grid pattern in a plan view. A plurality of crickets can stay in each breeding space 62. By doing so, a large number of crickets can be cultivated in a limited space. In particular, by holding crickets in a plurality of growing spaces 62 in which the growing space 62 is extended in the vertical direction instead of the horizontal direction, a space-efficient growing environment is realized in a limited floor area.

It is preferable that the size of each growing space 62 is such that crickets can change direction in the space. Although it depends on the type of cricket to be cultivated, the growing environment, the harvest time, etc., for example, in the case of crickets, the size of one square of the growing space 62 is preferably 2 cm to 4 cm on a side. As a result, a sufficient size is secured so that the grown crickets can change direction on the inner surface of the growing space 62, and an environment in which the grown crickets can move up and down along the wall is realized.

According to the tests of the present inventors, in the conventional cricket breeding apparatus, for example, ^{about 800 crickets could be grown in a housing of 40 cm × 40 cm × 60 cm = 96000 cm 3} , but 30 cm × 15 cm × 30 cm = 13500 cm. ^{It was confirmed that about 800 animals could be raised even in the case of 3} , and the volume ratio was 14% compared to the conventional one, and the size was reduced by 86%.

Further, by forming innumerable holes in the wall portion 61, it is possible to improve the air permeability in each growing space 62, to make the humidity uniform, and to improve the hygiene aspect. Further, crickets can easily climb up and down in the growing space 62 by putting their feet on the wall portion 61 in the innumerable holes formed in the wall portion 61. As the wall portion 61, for example, one having a mesh shape or one in which round holes are regularly opened can be used. Preferably, a metal mesh or punching metal can be used.
(Gap 64)

A plurality of wall portions 61 are crossed to form an integrated wall portion 60. Further, the wall portion 61 and the floor surface 10 are partially separated from each other. That is, a part of the wall body 60 is in contact with the floor surface 10, while the other part is separated from the floor surface 10 to provide a gap 64. For example, the growing space 62 is divided into a grid pattern by the wall portions 61 extending vertically and horizontally. Further, at the joint portion between the floor surface 10 and the wall portion 61, any of the sides constituting the rectangular growing spaces 62 is opened. An example in which a gap 64 is provided between the wall portion 61 and the floor portion is shown in the perspective view of FIG. As a result, the cricket can move from one growing space 62 to another growing space 62 through the gap 64. As a result, it is not necessary to individually put crickets into each growing space 62, and each cricket thrown into the housing 1 can enter or leave the growing space 62 appropriately through the gap 64, and the plurality of growing spaces 62 It can be easily distributed to a comfortable number for each of them. The number of crickets in each breeding space 62 depends on the height of the breeding space 62, the area of one square, the body length and type of crickets, but is preferably about 5 to 6 crickets.

In addition, the cricket on the floor surface 10 can climb upward from the portion of the wall portion 61 in contact with the floor surface 10 along the wall portion 61, and can move and stay in the vertical direction, which is comfortable for the cricket. An environment that is easy to do is realized. On the other hand, the portion of the wall portion 61 that is separated from the floor surface 10 can be moved to another growing space 62. As a result, the plurality of crickets put into the cricket growing device 200 can be moved to a desired growing space 62, respectively, so that the situation where the crickets are concentrated in a specific growing space 62 and become overcrowded is avoided, and the occurrence of cannibalism is avoided. It is expected that the yield will be improved by realizing an environment in which crickets can grow easily.

In the example shown in FIG. 6, the gap 64 is formed in a part between the adjacent wall portions 61. This horizontal cross-sectional view is shown in FIG. By partially providing the gap 64 formed between the floor surface 10 and the wall surface 61 in this way, the wall portion 61 can move on the floor surface 10 while being fixed in an upright posture from the floor surface 10. The crickets that grow on the floor straddle the wall portion 61 and can move to another growing space 62.

The height of the gap 64 shall be large enough for the grown crickets to pass through. For example, the wall portion 61 is partially separated from the floor surface 10 by 1 cm to 3 cm to form a gap 64. As a result, the cricket can move to another breeding space 62 across the wall portion 61. In the example of FIG. 6, it is set to about 2 cm.

Further, the distance between adjacent wall portions 61 in a plan view is set to 5 cm, and the width of the gap 64 is set to 4.5 cm. However, the width of the gap 64 is not limited to this size or ratio. For example, as in the modified example shown in FIG. 8, the width of the gap 64 may be equal to the distance between the wall portions 61.

Further, the pattern for forming the gap 64 is not limited to the example of FIG. 7, and any pattern in which the movable gap 64 is provided while partitioning the growing space 62 extended in the vertically direction can be used. For example, in the cricket growing device 200'related to the modified example shown in the horizontal cross-sectional view of FIG. 9, the growing space 62 is divided into a grid pattern by the vertically and horizontally extended wall portions 61, and the floor surface 10 and the wall portion 61 are joined. In the portion, the two sides of each rectangular growing space 62 are opened so that the two rows of growing spaces 62 in which crickets are connected in the vertical direction in the figure can be alternately moved in a zigzag shape.

Further, in the cricket growing device 200 ”corresponding to another modified example shown in FIG. 10, the growing space 62 is also formed in a grid shape, and at the boundary portion between the floor surface 10 and the wall portion 61, a rectangular shape in a plan view is formed. A gap 64 is formed in the middle of each side of each growing space 62.

Further, in the cricket growing device 200 ″ ″ according to another modified example shown in FIG. 11, the growing space 62 is not arranged in a grid pattern but is offset for each row. Further, the boundary portion between the floor surface 10 and the wall portion 61 is formed in an L shape, and the L shape is separated from each other to form a gap 64.

Furthermore, in the cricket growing device 200 "" according to another modified example shown in FIG. 12, the growing space 62 is formed in a cylindrical shape, and the boundary portion between the floor surface 10 and the wall portion 61 forms a circular shape in a plan view. A gap 64 is formed by separating a part of the arcs of each growing space 62.
[Embodiment 3]

According to the cricket growing device having a mesh-like wall, the cricket can easily move up and down with its legs meshed. On the other hand, since the legs can be firmly hooked on the mesh, there is a problem that it becomes difficult to separate the crickets from the wall when harvesting the grown crickets.

Conventionally, in order to separate live crickets from dead crickets, a method of lifting a member in which the cricket is caught and mechanically vibrating it to shake it, a method of energizing it, a method of blowing wind, etc. have been proposed. However, all of them have a problem that a mechanical and electrical structure is required and the configuration is complicated.

Therefore, as a result of diligent research, the inventors of the present application have dealt with a new problem of making it possible to easily separate live crickets from the mesh-like wall portion, and as a result, the scraping plate 22 intersecting the wall portion 61. We have found a configuration in which a slit 24 is formed in the scraping plate 22 to insert the wall portion 61, and the upper end of the wall portion 61 is fixed to the top surface 20. By pulling up the top surface 20, the wall portion 61 can be moved relative to the scraping plate 22, and the crickets clinging to the wall portion 61 can be forcibly scraped off.

Such a cricket growing device will be described as the third embodiment based on FIGS. 13 to 18E. In these figures, FIG. 13 is a perspective view showing the cricket growing device 300 according to the third embodiment, FIG. 14 is a perspective view showing a state in which the top surface 20 of the cricket growing device 300 of FIG. 13 is pulled up, and FIG. 15 is FIG. 16 is a front view of the cricket growing device 300, FIG. 16 is a right side view of the cricket growing device 300 of FIG. 14, FIG. 17 is a perspective view showing a state in which the floor surface 10 is pulled out from the housing 1, and FIG. 18A is a living on the wall surface. A state in which the crickets are clinging to each other and dead crickets and feces remain on the floor surface 10, FIG. 18B shows a state in which the floor surface 10 is pulled out from the state of FIG. 18A to separate dead crickets and the like, FIG. 18C. 18B shows the state where the floor surface 10 is returned from FIG. 18B, FIG. 18D shows the state where the wall surface is pulled up and the live crickets are scraped off to the floor surface 10, and FIG. 18E shows the state where the floor surface 10 is pulled out and the live crickets are harvested. The schematic side view shown is shown respectively. In the cricket growing apparatus 300 shown in these figures, the same members as those described above are designated by the same reference numerals, and detailed description thereof will be omitted as appropriate. In the cricket growing device 300 according to the third embodiment, as shown in FIGS. 13 to 15, a plurality of wall portions 61 are fixed to the top surface 20 and can be freely pulled out upward. Further, the scraping plate 22 is arranged so as to intersect the upright direction of the wall portion 61. The scraping plate 22 forms a slit 24 through which the wall portion 61 can be inserted. The scraping plate 22 is fixed in a horizontal posture above the wall portion 61, and the wall portion 61 is inserted through the slit 24 from above. By pulling up the top surface 20 placed in the parallel posture above the scraping plate 22 fixed in the horizontal posture, the wall portion 61 can be slid with respect to the scraping plate 22. Such a scraping plate 22 is formed by processing a metal plate.

On the other hand, as shown in the perspective view of FIG. 13, the side view of FIG. 16, and the perspective view of FIG. 17, the floor surface 10 is provided with holes and slits so that feces and the like can be dropped. Is provided with a pull-out tray 14 in the horizontal direction. As a result, cricket droppings and cricket carcasses that have passed through the floor surface 10 and remain on the tray 14 can be easily discharged to the outside of the cricket growing device 300. The tray 14 can be made of a metal plate or the like. Further, the tray 14 may be provided with a gently inclined surface in one direction, for example, on the drawer side so as to easily collect feces and the like.

A method of separating live crickets from dead crickets and harvesting them using this cricket growing device 300 will be described with reference to FIGS. 18A to 18E. First, as shown in FIG. 18A, the tray 14 is pulled out with dead crickets, feces, and the like remaining on the floor surface 10. As a result, as shown in FIG. 18B, foreign substances such as dead crickets and feces can be taken out to the outside of the cricket growing apparatus 300 and discarded. Further, it is considered that the living cricket on the floor surface 10 senses the movement of pulling out the tray 14 and attaches to the wall portion 61 to resist being pulled out. As a result, the living crickets are likely to be attached to the wall 61. In this state, as shown in FIG. 18C, the tray 14 once cleaned by removing the dead crickets and the like is returned to the cricket growing device 300.

Then, pull up the top surface 20 as shown in FIG. 18D. As a result, the wall portion 61 fixed to the top surface 20 slides the slit 24 of the scraping plate 22 and moves upward as shown in FIGS. 14 and 15. As a result, the cricket without the wall portion 61 is forcibly scraped off from the clinging state and falls downward. In this state, the tray 14 can be pulled out as shown in FIG. 18E, and the live crickets can be discharged from the cricket growing device 300.

A handle 15 is provided on the side surface of the tray 14 so that it can be easily pulled out as shown in FIG.

In the example shown in FIGS. 13 and 14, the top surface 20 forms a fixed slit 23 into which the wall portion 61 is inserted, and the wall portion 61 is partially projected and fixed to the fixed slit 23. Further, as shown in FIGS. 13 to 16, the guide pins 25 on the top surface 20 are fixed at the four corners, and guide holes 26 into which the guide pins 25 are inserted are formed on the housing 1 side. As a result, the wall portion 61 can be stably pulled up in the vertical direction by the top surface 20. Further, the guide pin 25 may be provided with a stopper for preventing the wall portion 61 from coming off completely from the housing 1. For example, a protrusion larger than the guide hole 26 is formed at the end of the guide pin 25 to prevent the wall portion 61 from coming off unintentionally. Further, a pulling upper portion 27 for the user to hold by hand is formed on the upper portion of the top surface 20. By grasping the pulling upper portion 27 by hand, the user can easily pull up the top surface 20 upward.

In this way, by pulling up the top surface 20 with the plurality of wall portions 61 inserted through the scraping plate 22, the crickets attached to the wall portions 61 can be scraped off by the scraping plate 22. There is an advantage that the work of peeling the live cricket from the wall portion 61 can be easily performed.
[Modification example]

In the above embodiment, an example in which the floor surface 10 is pulled out in a sliding manner has been described. However, the present invention is not limited to this configuration, and other configurations may be adopted. For example, the floor surface of the housing can be opened and closed. As an example, in the cricket growing device 300'related to the modified example shown in FIG. 19, the floor surface 10'is divided into two, and the divided floor surfaces 10'are rotatably connected by a hinge or the like. This makes it possible to open the floor surface 10'in a double-door manner. As a result, cricket droppings and carcasses can be easily discharged from the cricket growing device 300', and separation from live crickets becomes easy.

Needless to say, the slide-type scraping mechanism according to the third embodiment can also be applied to the above-described modified examples, for example, the layout of the wall portion 61 shown in FIGS. 9 to 12. ..
[Embodiment 4]

When growing a large number of crickets in a cricket growing device, the treatment of cricket droppings becomes a problem. In order to discharge cricket droppings from the cricket growing device, a configuration is adopted in which a plurality of openings are formed on the floor surface and a pull-out tray is arranged on the lower surface of the floor surface as described above. By forming the size of the opening smaller than that of crickets and larger than that of feces, only cricket feces can be passed through the opening and collected in a tray, and the feces can be discarded.

However, freshly hatched cricket larvae are smaller than grown cricket droppings. For this reason, when crickets that have not yet grown sufficiently are put into the cricket breeding device, the cricket larvae also pass through the opening and fall into the tray together with the feces, and there is a problem that the feces and the crickets cannot be separated. rice field. In order to avoid this, it is conceivable to grow crickets to some extent and put them into the cricket growing device in a state where they do not pass through the opening. However, in this case, until the cricket grows to a certain size, it becomes necessary to grow the cricket in another facility, another cricket pre-growth device must be prepared, and the cricket is removed from the cricket pre-growth device. There is a problem that extra processes and equipment are required, such as the time and effort required for extraction.

Therefore, in order to solve the problem that it is difficult to separate the feces and the cricket larvae, the present inventors examined the cricket breeding apparatus and the cricket breeding method according to the fourth embodiment. The cricket growing apparatus 500 according to the fourth embodiment is shown in FIGS. 20 to 21B. In the cricket growing apparatus 500 shown in these figures, the same members as those described above are similarly designated by the same reference numerals, and detailed description thereof will be omitted as appropriate. In the cricket growing device 500 according to the fourth embodiment, the tray 14 is arranged on the lower surface of the floor surface 10. The floor surface 10 is composed of a first floor plate 11 and a second floor plate 12. The first floor plate 11 forms a plurality of first openings 13 having a predetermined inner diameter. The first opening 13 is formed in a size that does not allow the grown crickets to pass through but allows the cricket feces to pass through. Here, a punching metal having a large number of round holes having a diameter of about 2 mm formed in the first floor plate 11 as the first opening 13 is used. In addition, a volume of about 10 mL of cricket larvae was added.

On the other hand, the second floor board 12 is solid and flat. As shown in FIG. 21A, the second floor plate 12 is a drawer type from a state where it is arranged so as to overlap with the first floor plate 11. By arranging the second floor plate 12 so as to overlap the first floor plate 11 as shown in FIG. 21A, the first opening 13 opened in the first floor plate 11 can be closed by the flat plate-shaped second floor plate 12. On the other hand, as shown in FIG. 21B, the second floor plate 12 is pulled out from the cricket growing device 500 so that only the first floor plate 11 is used, and it is possible to switch to a state in which the first opening 13 is opened.

With such a configuration, cricket droppings can be collected in the tray 14 through the first opening 13 opened in the first floor plate 11. On the other hand, since the larvae of the crickets that have just hatched are smaller than the feces, the problem that they would pass through the first opening 13 and fall into the tray 14 until the crickets grow to a certain size By arranging the second floor plates 12 so as to overlap each other, the first opening 13 can be temporarily closed and avoided. In particular, this method eliminates the need to grow crickets to some extent and put them into the cricket growing device after they have grown larger than the first opening 13, and even freshly hatched crickets can be put into the cricket growing device. There is no need to prepare a separate hatching device to grow crickets to a certain size, and productivity is also improved.

The inner diameter of the first opening 13 is set according to the type of cricket to be raised, particularly the body length at the time of larvae and the size of feces, and is, for example, 0.5 mm to 3 mm. It is preferably set to 2 mm.

The first floor plate 11 is preferably made of metal punching metal. Thereby, a plurality of first openings 13 can be easily formed.

In the cricket growing apparatus 500 shown in FIGS. 21A and 21B described above, an example in which the second floor plate 12 is arranged under the first floor plate 11 has been described. However, the present invention is not limited to this configuration, and the second floor plate 12 may be arranged on top of the first floor plate 11 as in the cricket growing device 500'corresponding to the modified example shown in FIG. 22, for example. Needless to say.
(How to grow crickets)

Here, a cricket growing method using the cricket growing device 500 described above will be described. First, the cricket growing device 500 described above was prepared, and the second floor plate 12 was placed on top of the first floor plate 11 to hatch on the floor surface 10 in a state where the plurality of first openings 13 were closed. Add multiple cricket larvae. Then, when the crickets are grown and most of them are larger than the first opening 13, the second floor plate 12 is pulled out, a plurality of first openings 13 are opened, and cricket droppings pass through the first opening 13 and the tray 14 is used. It is in a state of falling to. As a result, cricket droppings can be collected in the tray 14 through the first opening 13 opened in the first floor plate 11. On the other hand, since the larvae of the crickets that have just hatched are smaller than the feces, the problem that they would pass through the first opening 13 and fall into the tray 14 until the crickets grow to a certain size By arranging the second floor plates 12 so as to overlap each other, the first opening 13 can be temporarily closed and avoided. In particular, this method eliminates the need to grow crickets to some extent and put them into the cricket growing device after they have grown larger than the first opening 13, and even freshly hatched crickets can be put into the cricket growing device. There is no need to prepare a separate hatching device to grow crickets to a certain size, and productivity is also improved.
[Embodiment 5]

Crickets are bred in 35 days at a temperature of about 30 degrees and a humidity of about 30%. The higher the temperature, the faster the growth. Here, the temperature is set to 30 degrees in consideration of the working environment of the worker.

Crickets repeatedly molt and become adults from larvae. Generally, it is said that if molting is repeated 8 times, it becomes an adult. Therefore, when raising crickets, it is conceivable to wait until the cricket larvae put into the cricket breeding apparatus have grown to a sufficient size after molting eight times before harvesting the crickets. Here, FIG. 23 shows a schematic graph showing the number of days of growth and the body weight of crickets. As shown in this figure, crickets immediately after molting lose weight temporarily, but recover as they grow. That is, the body length increases.

However, in the 8th molting, which is the last molting of crickets, the weight loss immediately after molting is larger than that of other molting. Therefore, it takes time to grow to the weight before molting. Crickets may also die during the eighth molt. In addition, adult crickets have wings and can fly away. In addition, the texture of the feathers of dried adult crickets is not good.

Therefore, it is conceivable to harvest crickets after the 7th molting and before the 8th molting, which is before the crickets become adults. Specifically, the cricket growing method according to the fifth embodiment of the present invention is a step of putting cricket larvae into a cricket growing device and harvesting at the stage where the cricket larvae repeatedly molt and finish the seventh molting. Including the process of As a result, in addition to shortening the growing period of crickets, it is possible to avoid the risk of crickets dying in the eighth molting and increase the yield. In addition, since it is not an adult, it is possible to reduce the deterioration of texture due to feathers when it is used as food.

The judgment of the stage after the 7th molting of crickets can be managed by the number of days after the crickets hatch. As a result, qualitative management is possible without directly visually confirming the molting of crickets, and there is an advantage that the timing of harvesting can be easily grasped.

According to the cricket growing device and the cricket growing method of the present invention, it can be suitably used as white lighting that is kind to the human eye.

100, 100', 200, 200', 200 ", 200'", 200 "", 300, 300', 500, 500'... Cricket breeding device 1, 1'... Housing 10, 10'... Floor surface 11 ... 1st floor plate 12 ... 2nd floor plate 13 ... 1st opening 14 ... Tray 15 ... Handles 20, 20B ... Top surfaces 22, 22B ... Scraping plate 23 ... Fixed slit 24 ... Slit 25 ... Guide pin 26 ... Guide hole 27 ... Pulling top 30 ... Outer wall 31 ... Window 32 ... Opening 34 ... Covering member 40 ... Feeding section 41 ... Feed inlet 50 ... Water supply section 51 ... Water supply path 52 ... Water absorbing member 60 ... Wall body 61 ... Wall section 62 ... Growing Space 64 ... Gap

Claims

A cricket breeding device
On the floor
A plurality of flat plates held in an upright posture on the floor surface, and a plurality of wall portions intersected so as to partition a plurality of rectangular growing spaces in a plan view.
With
The plurality of growing spaces are configured so that one or more crickets can move up and down in the vertical direction in each internal space defined by the wall portion.
A part of the plurality of wall portions is in contact with the floor surface.
A cricket growing device in which the other part of the plurality of wall portions is separated from the floor surface.
The cricket growing device according to claim 1.
A cricket growing device in which the other part of the plurality of wall portions is separated from the floor surface by 1 cm to 3 cm.
The cricket growing device according to claim 1 or 2.
A cricket growing device in which the wall portion is formed in a mesh shape.
The cricket growing device according to claim 3.
A cricket breeding device in which the floor surface is configured to be openable and closable.
The cricket growing device according to claim 4, further
A scraping plate formed by forming a slit through which the plurality of wall portions can be inserted, and slidably intersecting the upright direction of the plurality of wall portions in a state where the plurality of wall portions are inserted through the slit. When,
A top surface on which the upper ends of the plurality of wall portions through which the scraping plate is inserted are fixed, and
A cricket breeding device equipped with.
The cricket growing apparatus according to any one of claims 1 to 5.
A cricket growing device in which the size of one square of the plurality of growing spaces is formed to have a side of 2 cm to 4 cm.
A cricket breeding device
On the floor
A plurality of wall portions held in an upright posture on the upper surface of the floor surface,
A tray arranged on the lower surface of the floor surface and
With
The floor surface
A first floor board having a plurality of first openings having a predetermined inner diameter and
With a solid, flat second floorboard,
The first opening is sized to allow cricket droppings to pass through, not through grown crickets.
A cricket growing device capable of closing the plurality of first openings and allowing the plurality of first openings to be freely inserted and removed to be switched to an open state by arranging the second floor plate so as to overlap the first floor plate.
The cricket growing apparatus according to claim 7.
A cricket growing device having an inner diameter of 0.5 mm to 3 mm of the first opening.
The cricket growing apparatus according to claim 7 or 8.
A cricket growing device in which the first floor board forms the plurality of first openings with punching metal.
A cricket breeding device
With a rectangular floor and
A water supply unit arranged on the first end edge of the floor surface and
A feeding portion arranged on the floor surface at the second end edge facing the first end edge, and
With a housing that has
A cricket breeding device equipped with.
The cricket growing apparatus according to claim 10, further
A feeding interface for connecting the feeding part to the feeding part of another housing,
A water supply interface for connecting the water supply unit to the water supply unit of another housing,
Is equipped with
A plurality of the housings can be connected to each other.
A cricket growing device capable of connecting the feeding interfaces to each other and connecting the water supply interfaces to each other between adjacent housings of the plurality of connected housings.
The cricket growing apparatus according to claim 10 or 11.
While forming an opening on the side surface of the housing,
A cricket growing device in which the opening is covered with a covering member having breathability.
The cricket growing apparatus according to any one of claims 10 to 12, further comprising:
A cricket growing device provided with legs for separating the housing from the installation surface.
It ’s a method of growing crickets.
The process of putting cricket larvae into the cricket breeding device,
A method for growing crickets, which includes a step of repeatedly molting cricket larvae and harvesting at the stage when the seventh molting is completed.
The method for growing crickets according to claim 14.
A method for growing crickets, in which the determination of the stage at which the seventh molting of crickets has been completed is managed by the number of days after the crickets hatch.
It ’s a method of growing crickets.
A first floor board having a plurality of first openings having a predetermined inner diameter and
A floor surface having a solid, flat second floor plate arranged on top of the first floor plate, and
A plurality of wall portions held in an upright posture on the upper surface of the floor surface,
A tray arranged on the lower surface of the floor surface and
And the process of preparing a cricket breeding device equipped with
A step of throwing a plurality of hatched cricket larvae onto the floor surface in a state where the plurality of first openings are closed by arranging the second floor plate so as to overlap the first floor plate.
When crickets are grown and most of them are larger than the first opening, the second floor plate is pulled out to open the plurality of first openings, and cricket droppings pass through the first opening and fall into the tray. The process of making it in a state to be
How to grow crickets, including.