JP2010124712A - Animal-raising apparatus and animal-raising cage - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an animal-raising apparatus and an animal-raising cage by which the diffusion of smell into a raising chamber can be prevented, a good raising environment giving no bad influence on the thermal feeling of the animal can be created, and the maintenance work of the animal-raising cage can be simplified. <P>SOLUTION: The animal-raising apparatus 10 includes a chamber 11 also usable as a shelf plate on which the animal-raising cage G1 having a flat bottom part M constituted of an air-permeable member is placed so as to carry the animal to be raise, an air inlet 12 and an air outlet 13 formed in the chamber, an opening 17 formed in the upper surface 15 of the chamber, and an air flow-forming means for forming an air flow in the chamber so that the air fed from the air inlet may be discharged from the air outlet. The air flow is formed at the lower part of the air-permeable member at the flat bottom part in a state in which the animal-raising cage is placed at the opening of the chamber. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an animal breeding apparatus and an animal breeding cage in which the animal breeding cage is installed on a shelf board.

  In general, in a room where an animal cage cage rack with an open top surface for raising small laboratory animals such as mice, rats, hamsters, guinea pigs, and rabbits is installed, air is supplied to the room and exhausted from the rear of the cage rack. The method to take is taken. As a ventilation method of each animal breeding cage, a method of supplying air from the top or side of the cage and exhausting from the top of the cage is common. Further, there are a method of supplying air from the lower part of the cage and exhausting it from the upper part as in Patent Document 1, and a method of supplying air from the upper part of the cage and causing air to overflow from the cage as in Patent Document 2.

Moreover, the guideline regarding the breeding management of experimental animals is shown in Non-Patent Document 1, and the air velocity is set to 13-18 cm / second as one of the target values of the environmental conditions in the experimental animal production facility (bred room). Yes. Further, the airflow and wind speed in the room are explained as follows. “D, airflow and wind speed The direction of airflow in the animal room is related to the movement of dust and airborne bacteria, and the wind speed has a great influence on the heat dissipation of the animal. However, the airflow rate is considered to vary depending on the species of animal, sex, weight, growth level, activity status, etc. As the immediate response, the physiological effect of the animal's sensory temperature is large, so it is not only uniformly regulated in the room, but also the form of the cage and the positional relationship with the air-conditioning outlet. It is necessary to pay attention to and not to give stress to animals. "
Japanese Utility Model Publication No. 7-39397 JP 2000-116265 A "Guidelines for Laboratory Animal Care" Japan Society for Experimental Animals (URL [http://jsla.lin.go.jp/guideline.html] Retrieved on November 25, 2008)

  In the general method of supplying air from the top or side of the cage and exhausting it from the top of the cage, if the air in the cage is exhausted from the top of the cage, the air that flows into the cage will be exposed to the flooring surface that is the source of odor. It is not efficient in suppressing odors from odor-generating sources such as excrement under the flooring, and if the flooring is wetted by urine etc., the generation of odors will be promoted. In order to suppress the spread of odors into the room, it becomes necessary to allow more air to flow into the cage. For this reason, a large amount of air hits the animal in the cage, which adversely affects the thermal sensation of the animal and causes stress due to the adverse effect of the thermal sensation.

  In view of the problems of the prior art as described above, the present invention aims to prevent the spread of odors into the breeding room and to create a good breeding environment that does not adversely affect the thermal feeling of the animal, and to maintain the animal breeding cage. An object is to provide an animal breeding apparatus and an animal breeding cage that can be simplified.

  In order to achieve the above object, the animal breeding apparatus according to the present embodiment includes a chamber that also serves as a shelf board on which an animal breeding cage having a flat bottom portion constituted by a breathable member is placed so that animals to be raised are placed; An air supply port and an exhaust port provided in the chamber, an opening provided on the upper surface of the chamber, and an air flow in the chamber so that air supplied from the supply port is exhausted from the exhaust port. An air flow forming means for forming the air flow, wherein the air flow is formed in a lower portion of the breathable member at the bottom of the plane in a state where the animal breeding cage is installed at the opening of the chamber.

  According to this animal breeding apparatus, the animal breeding cage is installed at the opening of the chamber as a shelf plate, and an air flow is formed in the chamber by the air flow forming means, and this air flow is a breathable member at the bottom of the plane of the animal breeding cage. The odor from the odor generating source such as excrement collected in the breathable member can be efficiently removed, and the air flowing from the breathable member to the upper part of the flat surface is reduced, and is placed on the flat bottom surface. Since there is not much airflow against the animals, it does not adversely affect the thermal feeling of the animals. Thereby, the stress with respect to the animal resulting from the bad influence of a thermal feeling can be prevented beforehand. In addition, the chamber in which the airflow passage is formed also serves as a shelf for installing the animal breeding cage, so that the maintenance work of the animal breeding cage can be simplified.

  The air flow forming means includes an exhaust duct connected to the exhaust port of the chamber, and an exhaust means such as an exhaust fan connected to the exhaust duct, and the air supplied from the air supply port by the operation of the exhaust means is An air flow can be formed in the chamber as it is exhausted from the exhaust port. An air supply duct communicating with the air supply port may be provided, and an air supply means such as a blower fan is connected to the air supply duct.

  In addition, by arranging a plurality of chambers as shelf boards in a rack form by arranging them in the horizontal direction and / or the vertical direction, a large number of animal breeding cages can be installed side by side.

  In the animal breeding apparatus, it is preferable that the animal breeding cage is installed in the chamber through the opening and the breathable member is located in the chamber away from the lower surface of the chamber.

  According to the above configuration, the animal breeding cage is installed in the opening of the chamber, and the air permeable member is located in the chamber and away from the lower surface of the chamber, so that an air flow is formed at the bottom of the air permeable member at the bottom of the plane. You can make it. Since it is only necessary to insert the animal breeding cage into the opening of the chamber, the maintenance work of the animal breeding cage is simplified, and the positioning adjustment on the shelf board of the animal breeding cage becomes unnecessary.

  In addition, the animal breeding cage has a bottom portion below the flat bottom portion, and is positioned so that the bottom portion is placed on the lower surface of the chamber through the opening and faces the air supply port and the exhaust port, respectively. It is preferable that an opening is provided in each side portion of the cage. The bottom portion may be a bottom surface portion that faces the flat bottom portion, but may have a shape in which the planar bottom surface is omitted from the bottom surface portion as long as the cage is supported by the lower surface of the chamber.

  In the case described above, the opening provided in each side part of the animal breeding cage is preferably a slit shape extending in the lateral direction, and the air supply and exhaust ports of the chamber are equivalent to the width and height of the slit-like opening in the cage side part. Or it is preferable to have a large width and height, and when a plurality of slit-like openings are provided in the lateral direction of the cage side surface portion, it is preferable to have a width equal to or larger than the total of the respective widths.

  Moreover, it is preferable to provide the slit-shaped opening on the side surface portion of the cage at a position that is approximately half the height (Y / 2) or less (Y / 2 or less from the bottom) of the overall height (Y) of the cage. . Moreover, it is preferable that the upper end position of each slit-shaped opening of each cage side part is substantially the same height as the flat bottom part of the animal breeding cage.

  In the animal breeding apparatus, the animal breeding cage is preferably installed on the upper surface of the chamber so that the flat bottom covers the opening.

  According to the said structure, an air breeding cage can be made to form in the lower part of the air permeable member of a plane bottom part by installing an animal breeding cage in the upper surface with the opening of a chamber. Since it is only necessary to place the animal breeding cage on the upper surface of the chamber, the maintenance work of the animal breeding cage is simplified.

  In addition, it is preferable that the animal breeding cage in the above configuration is configured such that the cage bottom is made of a breathable member. Further, the animal breeding cage may be installed so as to be fitted into the opening rather than simply being placed on the upper surface of the chamber having the opening. That is, the size of the opening of the chamber is adjusted, and an animal breeding cage whose cage bottom surface is made of a breathable member is fitted into the opening on the top surface of the chamber and is supported around the opening. The sex member may be located in the chamber away from the lower surface of the chamber.

  The animal breeding cage of the present embodiment can be used for the above-described animal breeding apparatus. By applying the animal breeding cage to the above-described animal breeding apparatus, it is possible to prevent odor from spreading into the breeding room and It is possible to create a good breeding environment that does not adversely affect the feeling and to simplify the maintenance work of the animal breeding cage.

  According to the animal breeding apparatus of the present invention, it is possible to prevent the spread of odors into the breeding room, create a good breeding environment that does not adversely affect the thermal feeling of the animal, and simplify the maintenance work of the animal breeding cage. be able to.

  The best mode for carrying out the present invention will be described below with reference to the drawings.

<First Embodiment>
FIG. 1 is a diagram schematically showing an entire breeding room in which an animal breeding apparatus according to the first embodiment is installed. FIG. 2 is a cross-sectional view of a main part of the animal breeding apparatus of FIG.

  As shown in FIG. 1, an animal breeding apparatus 10 configured by stacking a plurality of animal breeding cages (hereinafter simply referred to as “cages”) G1 in a rack shelf type is installed in the breeding room R.

  As shown in FIG. 2, the cage G1 is a flat surface provided with a lid C formed of a breathable member such as a wire mesh and a breathable member such as a wire mesh or a mesh so that a breeding animal can be placed thereon. It has a bottom part M and a bottom part T below the flat bottom part M, and has a rectangular tray structure as a whole. A space between the flat bottom M and the lid C of the cage G1 is a living space E for domestic animals. The cage G1 further includes a slit-like opening K1 provided in the lower part of the side part S1 on the front side and a slit-like opening K2 provided in the lower part of the side part S2 on the back side.

  The cage G1 can be made of a metal material such as stainless steel or a resin material. Breathable members such as wire mesh and mesh can be made from stainless steel or resin wire. Moreover, you may use what formed many holes in the board | plate material which consists of metal materials, resin materials, etc., such as stainless steel, as a breathable member.

  Further, when raising animals in the cage G1, a floor covering W is laid on a wire net or the like of the flat bottom portion M. As a material for the floor covering W, coarse sawdust, wood chips, shredded paper, or the like that does not fall from a breathable member such as a wire mesh is used, but is not limited thereto. In addition, since the excrement (urine, feces, etc.) of the animal being bred in or collected in the floor covering W, the floor covering W is periodically replaced.

  As shown in FIGS. 1 and 2, the animal breeding apparatus 10 includes a flat chamber 11 that also serves as a shelf on which the cage G <b> 1 is installed. The chamber 11 includes an air supply port 12 provided on the front surface side, an exhaust port 13 provided on the back surface side, a rectangular opening 17 formed in a rectangular shape on the upper surface 15 so that the cage G1 is fitted therein, and an air supply A passage portion 14 in which an air flow is formed between the port 12 and the exhaust port 13 and a lower portion of the cage G1 is located.

  The chamber 11 is provided with a slit-like intermediate opening 18 between the air supply port 12 and the passage portion 14, and a slit-like intermediate opening 19 is provided between the passage portion 14 and the exhaust port 13. Yes.

  Exhaust air communicating with the exhaust port 13 of each chamber 11 via an intermediate portion 20 as air flow forming means for ventilating the lower portion of the flat bottom portion M of the cage G1 located in the passage portion 14 of the chamber 11 to form an air flow. A duct D, a suction fan F1 provided outside the breeding room R for sucking air from the exhaust duct D and discharging it to the outside, and a deodorizing device FI for removing odorous components from the air discharged from the suction fan F1. Prepare. Further, in order to supply fresh air to the breeding room R from the outside, the blower fan F2 provided outside, and the outlet P provided on the ceiling U so as to blow the air from the blower fan F2 to the breeding room R And comprising.

  The deodorizing device FI is a photocatalyst method combined with an ultraviolet lamp, an ozone method using an ozone generator, an adsorption method using a filter such as activated carbon or zeolite, a deodorant spray method, and a plasma discharge method. You can choose from odor devices.

  As shown in FIG. 1, the air blown from the outlet P in the arrow direction P1 by the operation of the blower fan F2 hits the floor B or directly flows in the arrow direction P2, while the suction fan F1 is operated. The air from the arrow direction P2 is sucked into the air supply port 12 of each chamber 11 in the arrow direction P5, passes through the passage portion 14, is discharged from the exhaust port 13 in the arrow direction P6 (FIG. 3), and passes through the intermediate portion 20 It flows to the exhaust duct D in the direction P7 and is discharged to the outside through the exhaust duct D. Further, the air that hits the floor B or directly flows in the arrow direction P3 is exhausted at a corner portion at the bottom of the wall surface opposite to the installation wall surface of the animal breeding apparatus 10 of the rack structure in the breeding room R. It flows from the hole Q in the direction of the arrow P4 and is exhausted to the outside.

  Next, the chamber and the animal breeding apparatus shown in FIGS. 1 and 2 will be further described with reference to FIGS. FIG. 3 is a perspective view showing an example in which the chamber of FIGS. 1 and 2 is long in the lateral direction so that a plurality of cages can be installed side by side. FIG. 4 is a perspective view showing an animal breeding apparatus having a rack structure in which chambers as shelf boards in FIG. 3 are stacked in a plurality of stages in the vertical direction.

  As shown in FIGS. 3 and 4, the chamber 11 has a shelf-like shape extending in the horizontal direction H so that a plurality of cages G <b> 1 can be arranged in the horizontal direction H, and is configured in a box-shaped tray shape. The tray-shaped member 21 extends in the horizontal direction H and the lid member 22 is disposed so as to cover the tray-shaped member 21.

  The lid member 22 constitutes the upper surface 15 of the chamber 11, and rectangular openings 17 (see FIG. 5) into which the cage G <b> 1 is fitted are provided on the upper surface 15 in the lateral direction H at predetermined intervals. Corresponding to each rectangular opening 17, a slit-like air supply port 12 extending in the lateral direction is provided on the front surface of the tray-like member 21, and a slit-like exhaust port 13 extending in the lateral direction is provided on the rear surface of the tray-like member 21. Is provided.

  As shown in FIG. 4, the animal breeding apparatus 10 having a rack structure can be configured by stacking the chambers 11 as shown in FIG. 3 in the vertical direction as shelf boards, and can accommodate a large number of cages G1.

  Next, a configuration example of the chamber 11 in FIGS. 3 and 4 will be described with reference to FIG. FIG. 5 is a partial perspective view showing a configuration example of the chamber of FIGS. 3 and 4.

  As shown in FIG. 5, the tray-like member 21 of the chamber 11 is configured as a box-shaped tray, and the lid member 22 has bent portions 22 a and 22 b on the front side and the back side, and has a U-shaped cross section. . When the cover member 22 is placed on the upper portion of the tray-like member 21, the bent portions 22 a and 22 b are positioned on the front and upper portions of the tray-like member 21.

  In addition, packings 23 a and 23 b made of rubber or the like are disposed between the bent portion 22 a of the lid member 22 and the upper front portion of the tray-like member 21 and between the bent portion 22 b and the upper rear portion of the tray-like member 21. Yes. The arrangement of the packings 23a and 23b prevents air from entering and exiting in the gap between the lid member 22 and the tray-like member 21, so that the passage portion 14 is introduced from the air supply port 12 as shown in FIG. The air flow that passes through the exhaust port 13 and is not disturbed. Further, since the lid member 22 can be easily removed from the tray-like member 21, the inside of the chamber 11 can be easily cleaned.

  As shown in FIG. 5, the lid member 22 is provided with a rectangular opening 17 into which the cage G1 is fitted as shown in FIGS. 1 to 4, and when the cage G1 is not installed, a flat rectangular lid 24 is covered. This prevents air from entering and exiting the unused rectangular opening 17. The tray-like member 21 and the lid member 22 of the chamber 11 can be made from a plate material made of a metal material such as stainless steel.

  Next, the slit-shaped air inlet 12 on the front surface of the chamber and the slit-shaped opening K1 of the side surface S1 of the cage shown in FIGS. 1 to 4 will be described with reference to FIGS. FIG. 6 is a view showing a side portion of the cage of FIG. FIG. 7 is a front view of the main part showing the slit-shaped air supply port on the front surface of the chamber and the slit-shaped opening on the side surface of the cage in FIGS.

  As shown in FIG. 6, the opening K1 provided in the side surface S1 of the cage G1 in FIG. 2 has a slit shape elongated in the lateral direction. The slit-shaped opening K1 is provided at a position that is approximately half the height (Y / 2) or less (a position that is less than or equal to the height Y / 2 from the bottom surface T), where Y is the overall height of the cage G1. .

  As shown in FIG. 6, the slit-shaped opening K1 is provided so that its upper end k is substantially the same height as the flat bottom M of the cage G1. Further, the opening K2 provided in the side surface portion S2 of the cage G1 in FIG. 2 has a slit shape elongated in the lateral direction, and is provided at the same position as the slit-like opening K1 in FIG. Thus, when air from the air supply port 12 flows from the slit-shaped opening K1 through the passage portion 14 and is discharged from the slit-shaped opening K2, an air flow is formed in the lower portion of the flat bottom portion M in the passage portion 14, Air flows above the flat bottom M.

  2 and 3, the front surface of the chamber 11 is provided with a slit-like air supply port 12 that is elongated in the lateral direction, and a laterally elongated slit-like opening is formed in the side surface S1 of the cage G1 as shown in FIG. Although K1 is provided, as shown in FIG. 7, the plane dimension of the air supply port 12 is larger than the opening K1.

That is, the width x1 and height y1 of the air inlet 12 of the chamber 11 preferably satisfy the following relational expressions (1) and (2) with respect to the width x2 and height y2 of the opening K1 of the cage G1. .
x1 ≧ x2 (1)
y1 ≧ y2 (2)

  By satisfying the relational expressions (1) and (2), the air introduced from the air supply port 12 is slightly throttled by the opening K1 of the cage G1, so that the turbulence of the air in the passage portion 14 is suppressed.

  When a plurality of slit openings are provided in the side surface of the cage G1, the width x1 of the air supply port 12 is preferably equal to or larger than the total of the widths. Further, as shown in FIG. 7, with respect to the relative position between the air inlet 12 of the chamber 11 and the opening K1 of the cage G1, the intersection of the diagonal lines of the air inlet 12 and the intersection of the diagonal lines of the opening K1 are substantially the same. It is preferable.

  Further, the width and height of the slit-like exhaust port 13 on the back surface of the chamber 11 also satisfy the relational expressions (1) and (2), and are equal to or larger than the width and height of the opening K2 of the cage G1, respectively. It is preferable.

  In addition, when the intermediate openings 18 and 19 in the chamber 11 are provided as shown in FIG. 2, the dimensions are not more than the width and height of the air supply port 12 and the exhaust port 13, and the widths of the openings K1 and K2 of the cage G1 and It is preferable that it is below the height.

  According to the animal breeding apparatus 10 of FIGS. 1 to 7, when installed in the breeding room R as shown in FIG. 1, the air blown in the direction P1 from the outlet P of the ceiling U flows in the direction P2, and the suction fan The air is sucked and introduced into the air inlet 12 of each chamber 11 in the direction P5 by the operation of F1, and then flows into the passage portion 14 through the opening K1 of the cage G1 and flows in the direction P6 through the opening K2, and from the exhaust port 13 It flows to the exhaust duct D in the direction P7, further flows to the pipe in the direction P8, passes through the deodorizing device FI, and is discharged to the outside in the direction P9. At this time, as shown in FIG. 2, the air passes through the air supply port 12, the openings K <b> 1 and K <b> 2, and the exhaust port 13, so that a stable air flow is formed in the passage portion 14. As a result, the air stably flows in the lower part of the flat bottom M of the cage G1 located in the passage part 14, so that the odors originate from the excrement of domestic animals that have permeated or accumulated in the floor covering W of the flat bottom M. Can be efficiently removed from the cage G1.

  Further, air stably flows in the space between the flat bottom portion M and the bottom surface portion T of the cage G1, so that a part of the air passes through a gas-permeable member such as a wire net of the flat bottom portion M and Even if it flows into the upper living space E, the amount of air is small, and the floor covering W of the flat bottom M prevents the inflow of air above the flat bottom M, and the animals being raised in the living space E Because there is almost no airflow, it does not adversely affect the warmth of the animal. Thereby, the stress with respect to the animal resulting from the bad influence of a thermal feeling can be prevented beforehand.

  Further, the chamber 11 in which the air flow passage is formed also serves as a shelf plate for installing the cage G1, and the maintenance work of the cage G1 such as cleaning and maintenance management can be simplified. Further, since the cage G1 can be installed simply by being inserted into the rectangular opening 17 of the chamber 11, the positioning adjustment of the cage G1 in the chamber 11 as a shelf board is unnecessary.

  As described above, according to the animal breeding apparatus 10 of the present embodiment, a stable air flow is formed in the lower part of the plane bottom M where the animal being bred in the cage G1 is placed, so that the excrement of the bred animal can be obtained. Odor as a source of odor can be removed, odors can be prevented from spreading into the breeding room R, a good breeding environment can be created, and a shelf board on which the cage G1 is placed can be used for air supply and exhaust. The maintenance work of the cage can be simplified by also using the passage.

<Second Embodiment>
FIG. 8 is a cross-sectional view of an essential part of the animal breeding apparatus according to the second embodiment and corresponds to FIG.

  The animal breeding apparatus according to the present embodiment is the same as that of the first embodiment except that the cage structure and chamber configuration to be used are different. Therefore, the same parts are denoted by the same reference numerals, and different parts are mainly used. explain.

  As shown in FIG. 8, the cage G2 has a flat bottom M1 made of a breathable member such as a wire net on which the animals to be reared, and has no bottom T as shown in FIG. Furthermore, the openings K1 and K2 as shown in FIG. 2 are not formed in the side portions S1 and S2.

  The rectangular opening 17 provided in the upper surface 15 of the chamber 11 is smaller in size than the planar bottom M1 of the cage G2, so that the cage G2 does not enter the rectangular opening 17 of the chamber 11 and is rectangular at the planar bottom M1. It is installed so as to cover the opening 17. A floor covering is laid on the flat bottom portion M1 as in FIG. The air supply port 12 and the exhaust port 13 of the chamber 11 are provided in a slit shape as in FIGS.

  According to the configuration of FIG. 8, as in FIG. 1, air is sucked and introduced into the air supply port 12 of each chamber 11 in the direction P5, then flows into the passage portion 14, and from the exhaust port 13 in the direction P6. It flows into the exhaust duct D, passes through the deodorizing device FI, and is discharged to the outside. At this time, a stable air flow is formed in the passage portion 14 by the air passing through the air supply port 12 and the exhaust port 13. As a result, air stably flows through the passage portion 14 below the flat bottom M1, so that the odors generated from the excrement of domestic animals that have permeated or accumulated in the flooring of the flat bottom M1 can be efficiently generated from the cage G2. Can be removed.

  In addition, air stably flows in the passage portion 14 in the chamber 11, so that a part of the air passes through a breathable member such as a wire net of the flat bottom M and flows into the living space E above the flat bottom M. However, the amount of the air is small, and the inflow of the air above the plane bottom M1 is hindered by the floor covering of the plane bottom M1, and there is almost no air flow on the animals reared in the living space E. Does not adversely affect the warmth of animals. Thereby, the stress with respect to the animal resulting from the bad influence of a thermal feeling can be prevented beforehand.

  Further, the chamber 11 in which the air flow passage is formed also serves as a shelf plate for installing the cage G2, so that maintenance work of the cage G2 such as cleaning and maintenance management can be simplified.

  Conventionally, in the case of a general method in which air is supplied from the top or side of the cage and exhausted from the top of the cage, or in a method in which air is supplied from the upper portion of the cage and the air is allowed to overflow from the cage in Patent Document 2, When the air is exhausted from the top of the cage, the air that has flowed into the cage only passes through the flooring surface, which is the source of odor, and the odors of odor sources such as urine and feces that have sunk or accumulated in the flooring. It is not efficient for suppression, and it is necessary to allow more air to flow into the cage in order to suppress such odors, which may adversely affect the thermal feeling of the animals in the cage. In the case of the method of supplying air from the lower part of the cage and exhausting from the upper part as shown in Fig. 1, there is a possibility that a lot of air flows into the cage and adversely affects the thermal feeling of the animals in the cage. On the other hand, according to the first and second embodiments described above, the odors that are derived from the excrement of the animals being raised are efficiently removed so as not to diffuse into the breeding room, and the animals being raised in cages Therefore, it is possible to prevent stress on the animal due to the adverse effect of the thermal sensation.

  Further, since the air flow hardly hits the animals reared in the living spaces E in the cages G1 and G2, the wind speed of the air flow at the bottom of the flat bottom portions M and M1 is adjusted by adjusting the exhaust amount of the exhaust fan F1. It becomes possible to increase the size and improve the deodorization efficiency.

  In this embodiment, when air is flowed into the chamber using a chamber similar to that shown in FIG. 2, it is formed below the plane bottom M made of a wire mesh of the cage G1 as shown in FIGS. 9 (a) and 9 (b). The wind velocity distribution of the air flow and the wind velocity above the plane bottom M are measured. The dimensions of a, b, and c of the cage G1 in the figure are a = 300 mm, b = 200 mm, and c = 20 mm. Each dimension of the air supply port 12 and the exhaust port 13 has a width of 220 mm × 20 mm, and each of the cage openings K1 and K2 has a width of 200 mm × 20 mm. In addition, a thermal fine anemometer (MODEL 6511 manufactured by Nippon Kanomax Co., Ltd.) was used for measuring the wind speed.

  As shown in FIG. 9A, the air velocity is measured at approximately the center in the air flow direction as shown in FIG. 9B, and the wind velocity is measured at approximately five equidistant intervals in the width direction as shown in FIG. 9B. The wind speed was .28 m / sec, and there was almost no difference in wind speed in the width direction in FIG. At this time, the wind speed in the region indicated by the alternate long and short dash line above the plane bottom M (in a state where no flooring is laid) in FIG. 9A is 0.05 to 0.15 m / sec. It turned out to be considerably smaller than the wind speed below.

  As described above, the best modes and examples for carrying out the present invention have been described. However, the present invention is not limited to these, and various modifications are possible within the scope of the technical idea of the present invention. is there. For example, in FIG. 8, the size of the rectangular opening 17 of the chamber 11 may be adjusted, and the cage G <b> 2 may be fitted into the rectangular opening 17. That is, the cage G2 is fitted into the rectangular opening 17 on the upper surface 15 of the chamber 11 so as to be supported around the rectangular opening 17, and the air-permeable member of the flat bottom M is separated from the lower surface 16 of the chamber 11 in the chamber 11. Configure to be located. Thereby, the cage G2 is not simply placed on the upper surface having the opening of the chamber but is fitted, so that the position adjustment of the cage G2 becomes unnecessary.

  1, 2, and 8, an air supply duct is provided so as to communicate with each air supply port 12 of the chamber 11 as an air flow forming means, and a blower fan is connected to the air supply duct. Good.

  2 only needs to be supported by the lower surface 16 of the chamber 11, the bottom surface of the bottom surface portion T on the lower side of the flat bottom portion M is omitted, and the surrounding of the cage G1 from the lower side of the flat bottom portion M of the cage G1 is omitted. The shape etc. which the side surface is extended may be sufficient.

  The animals that can be raised by the animal breeding apparatus according to the present invention may be small animals such as mice, rats, hamsters, guinea pigs, and rabbits, but are not limited thereto.

It is a figure which shows roughly the whole breeding room in which the animal breeding apparatus by 1st Embodiment was installed. It is principal part sectional drawing of the animal breeding apparatus of FIG. It is a perspective view which shows the example which comprised the chamber of FIG. 1, FIG. 2 long in the horizontal direction so that a some cage could be installed side by side. FIG. 4 is a perspective view showing an animal breeding apparatus having a rack structure in which chambers as shelf boards in FIG. 3 are stacked in a plurality of stages in the vertical direction. It is a fragmentary perspective view which shows the structural example of the chamber of FIG. 3, FIG. It is a figure which shows the side part of the cage of FIG. It is a principal part front view which shows the slit-shaped air supply opening of the chamber front surface of FIGS. 1-4, and the slit-shaped opening of a cage side part. It is principal part sectional drawing of the animal breeding apparatus by 2nd Embodiment. It is principal part sectional drawing (a) of the animal breeding apparatus of a present Example, and the top view (b) which shows the bottom face part of the cage located in the channel | path part of a chamber.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Animal breeding apparatus 11 Chamber 12 Supply port 13 Exhaust port 14 Passage part 15 Upper surface 16 Lower surface 17 Rectangular opening, opening 21 Tray-like member 22 Lid member 23a, 23b Packing R Rearing room D Exhaust duct F1 Suction fan F2 Blower fan FI Deodorization Equipment G1, G2 Animal breeding cage, cage C Lid K1, K2 Open M Flat bottom M1 Flat bottom S1, S2 Side face T Bottom face E Living space

Claims (5)

A chamber that also serves as a shelf on which an animal breeding cage having a flat bottom composed of a breathable member is placed so that animals to be reared are placed;
An air supply port and an exhaust port provided in the chamber;
An opening provided in the upper surface of the chamber;
An air flow forming means for forming an air flow in the chamber so that air supplied from the air supply port is discharged from the exhaust port, and
The animal breeding apparatus, wherein the air flow is formed below a breathable member at the bottom of the plane with the animal breeding cage installed at the opening of the chamber.   The animal breeding apparatus according to claim 1, wherein the animal breeding cage is installed in the chamber through the opening, and the breathable member is located in the chamber away from the lower surface of the chamber. The animal breeding cage has a bottom portion below the flat bottom portion, and the bottom portion is positioned so as to rest on the lower surface of the chamber through the opening,
The animal breeding apparatus according to claim 1, wherein an opening is provided in each side portion of the animal breeding cage that faces the air supply port and the exhaust port.   The animal breeding apparatus according to claim 1, wherein the animal breeding cage is installed on an upper surface of the chamber so that the flat bottom portion covers the opening.   The animal breeding cage which can be used for the animal breeding apparatus of any one of Claims 1 thru | or 4.

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