JPH01101831A - Breeding coop for animal of mixed blood - Google Patents

Abstract

PURPOSE: To provide a titled breeding pen capable of forming a uniform air environment inside a chamber and accelerating the growth of animals constituted so as not to make fresh outdoor air introduced vertically downwards inside the chamber from a ventilation opening directly flow through an animal residence area by placing the area between a vertical line passed through the ventilation opening of the ceiling and a side wall. CONSTITUTION: By the operation of a fan 15, air is discharged 56 from the chambers 7 and 8 to the outside and the inside of the chambers is turned to a negative pressure. The fresh outdoor air is introduced vertically downwards inside the chambers 7 and 8 from the ventilation opening 26 provided on the ceiling 6 by the negative pressure, passed through the side of the animal residence areas 51 and 52 and made to flow further downwards to a floor 11. Then, the fresh outdoor air made to flow downwards to the floor 11 is deflected further and deflected upwards along the side walls 2 and 5. In the meantime, since the animals housed in the areas 51 and 52 placed between the vertical line passed through the opening 26 and the side walls 2 and 5 are warm-blooded, a rising air flow is generated in the areas 51 and 52. Thus, the air flow deflected upwards by the side walls 2 and 5 cooperates with the rising air flow and forms an eddy and the fresh outdoor air from the outside is made to flow inside the chambers without being locally stagnated inside the chambers 7 and 8.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a shed used for raising warm-blooded animals such as chickens, pigs, and cows.

BACKGROUND OF THE INVENTION A conventional breeding house of the type described above has a chamber defined by two side walls, a ceiling and a floor.

As described in Japanese Utility Model Publication No. 55-36752, the air in the room is ventilated through a popular vent installed in the ceiling, vented through an exhaust vent provided below the side wall, or As described in Japanese Publication No. 55-6813, this was normally done by venting air through a popular opening provided below or above the side wall, and exhausting the air through an exhaust port provided in the ceiling.

Further, as disclosed in Japanese Patent Publication No. 55-24020, there is a breeding shed in which an intake port is provided at the lower part of the side wall, and an access port and an exhaust port are provided in the ceiling.

(Problems to be solved by the invention) Publication of Utility Model Publication No. 55-36752, Japanese Patent Publication No. 55-6813
In the breeding shed described in the publication, the air introduced into the room moves diagonally, so the uniform movement of indoor air is disrupted by the interference of gravity caused by the temperature difference inside the room, and fresh air introduced from outside is There is insufficient mixing between the normal air and the indoor air, making it difficult to create a uniform air environment indoors. When the indoor air environment becomes uneven in this manner, there is a problem in that the breeding and production activities of animals to be kept indoors are inhibited, and productivity is eventually reduced.

In addition, in the case of a breeding shed like the one disclosed in the above-mentioned Japanese Patent Publication No. 55-24020, a popular port is provided at the bottom of the side wall, so that the air introduced into the room from this popular port is
As in the case of Japanese Patent Publication No. 752 and Japanese Patent Publication No. 55-6813, there is a possibility of diagonal movement. Even if the air does not move diagonally, the air passes near the floor in areas other than directly under the air vents and exhaust vents installed in the ceiling, as stated in the same publication, so the upper part of the room is constantly exposed to dirty air. Therefore, if the animal living area extends to the top of the shed, the animals living above are constantly exposed to dirty air. Another problem is that when outside air is introduced through a port provided in the ceiling, the outside air directly hits the animal on the floor directly below the port, causing stress.

The purpose of the present invention is to solve these problems.

Means for Solving the Problems According to the invention, at least one elongated chamber, which is a kennel for breeding warm-blooded animals, is defined by two side walls facing each other, a ceiling and a floor; an animal living area located in the room between the two side walls and a vertical line passing through the ventilation opening; a passageway provided on the floor; and a passageway provided on the ceiling along the longitudinal direction of the room. a ventilation opening, an air outlet disposed on both sides of the ventilation opening and provided in the ceiling, and exhausting air from the chamber to the outside through the air outlet to create a negative pressure in the chamber; an air exhaust means for introducing outside air from the outside through the ventilation opening into the room by the negative pressure thereof, and the animal living area, the passageway, the ventilation opening, and the air outlet pass through the center line. A breeding pen for warm-blooded animals is provided, characterized in that it is arranged symmetrically with respect to a vertical plane.

(Function) The air exhaust means operates to exhaust air from the room to the outside, thereby creating negative pressure in the room. Normally, the air temperature inside the breeding shed is always higher than the outside air temperature, so the negative pressure allows relatively low-temperature fresh outside air to flow vertically downward into the room through the ventilation openings in the ceiling due to the action of gravity. and flows further down towards the floor past the animal habitat area. Fresh outside air flowing downward toward the floor is deflected by the floor, flows toward the side walls, and is deflected upward by the side walls. On the other hand, since animals housed in the animal living area located between the vertical line passing through the ventilation opening and at least one side wall are warm-blooded, an upper airflow is generated in the animal living area. . Therefore, the airflow deflected upward by the side wall cooperates with the rising airflow to form a vortex, so that the fresh air from outside flows through the room without being locally stagnate within the room.

(Embodiments) Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIG. 1, the breeding shed for warm-blooded animals according to an embodiment of the present invention is composed of an elongated building 1 having a conventional foundation and frame structure, and the buildings 1 are spaced apart from each other. It has two elongated, substantially air-tight side walls 2 (one of which is not visible in Figure 1) facing each other in relation to each other, and a sloped roof 3 with a ridge 3'; These side walls 2 and roof 3 are made of sheet metal side wall and roof materials that have heat insulating properties. Although one longitudinal end wall 53 and the other end wall 54 (see FIG. 3) of the building 1 are each provided with a door 4, it is preferable that there be no window. As shown in Figures 2 and 4, two
A central partition wall, that is, a third side W5 (hereinafter simply referred to as side wall 5) extending in the longitudinal direction is provided between the two side walls 2,
These three side walls 2 and 5, the ceiling 6 and the floor 11 delimit the interior of the building 1 into two long, substantially sealed chambers 7 and 8. Side wall 5 and sky kilometer are side g!
Made from the same material as 2. And Figures 4 and 6
As shown in the figure, the ceiling 6 of each room 7.8 is provided with ventilation openings 26 in spaced relation to each other at regular intervals along the central longitudinal axis of the room. As shown in FIGS. 2 and 3, it has an elongated rectangular shape extending in the longitudinal direction of the building 1.

As clearly shown in FIG. 4, within each chamber 7.8, a vertical line passing through the center of the ventilation opening 26 and
Animal living areas 51 and 52 for accommodating warm-blooded animals, respectively, are defined in the pen facing each other. In the illustrated embodiment, each animal living area 51.52
has a plurality of vertically spaced stages S9 on the side walls 2 and 5.
is supported adjacent to. These S9s are, for example, of a wire mesh structure with a mesh bottom through which chicken droppings can pass. Except for the top tier, each tier has a continuous sheet metal crest 9' that slopes outwardly and downwardly toward the adjacent side walls 2 and 5 to prevent droppings from entering the cage 9 below. It is designed to prevent this from happening. Each room 7.8 has a Chuodo vPi between the animal living areas 51 and 52 facing each other.
10 are provided. The central passage 1o is raised above the rest of the floor 11.

Although the dimensions of each part of building 1 can vary widely, in the illustrated embodiment the interior dimensions of each room 7.8 are approximately 260 feet by 8.
feet), and the height of the ceiling 6 is approximately 2.9 m (2.9 m) from the floor 11.
9-1/2 feet).

As shown in FIG. 3, adjacent to one longitudinal end wall 53 of the building 1 is a utility and storage space 12 separated from the rooms 7 and 8 by an opaque curtain 13 or wall. . The end of the side 9!5 adjacent to the other end wall 54 in the longitudinal direction of the building 1 is the other end g! of the building 1. 54. The two chambers 7 and 8 are connected to each other at both ends of the side wall 5 to provide ventilation.

As shown in FIGS. 2 to 5, a rectangular frame 16 is provided at a portion of the ceiling 6 of each room 7.8 that corresponds to the raised portion 3' of the roof 3. It is located on the central longitudinal axis of the chamber 7.8.

Inside this rectangular frame 16, an air exhaust means, that is, a fan 15 for blowing air is installed.

In addition, as shown in FIGS. 2 to 5, the ceiling 6,
On both sides of the ventilation opening 26, air outlets 56 are provided which extend in the longitudinal direction of the building 1.

This air outlet 56 is a gutter-shaped thing with a U-shaped cross section.
．． 8 side, and is connected to the rectangular frame 16 so that the air in the air outlet 56 communicates into the rectangular frame 16. The ridges 3' are distributed substantially evenly in the longitudinal direction of the building 1. In the illustrated embodiment, the distance between the centers of adjacent ridges 3' is approximately 18.9 m (
62 feet) and the ridge 3 located at the extreme end
' and the adjacent end of the chamber 7.8 containing the cage 9 is approximately half the center-to-center distance. Each ridge 3' is approximately 12 feet long, with one end of each ridge 3' being approximately 5 feet higher than the other end. The ridge 3' is sealed against the attic 23 (FIG. 4) and forms an exhaust air space 121119, which exhaust space 19 can be accessed only through a large window or exhaust opening 20 on one side of the building 1. It communicates with the outside of object 1. Cage 9, central passage 10. Ventilation opening 26 and air outlet 5
6 are arranged symmetrically with respect to a vertical plane passing through the longitudinal center line of the chamber 7.

At the top of each rectangular frame 16 a lightweight insulated door 17,18 is pivotally mounted. These doors 17.18 are normally closed and seal the lower chamber 7.8 from the exhaust space 19. When the fan 15 is activated, the door 17
．． 18 will be blown open. As can be understood from FIG. 5, in the case of the fan 15 farther from the exhaust opening 20,
Opening of the door 17 is achieved through the pivoting end of the door 17 and the raised portion 3'.
is restricted by a cord 17' connected between. Frame 1 of fan 15 adjacent to exhaust opening 20
An inclined deflection plate 18' is fixed inside the 6.
This is to prevent air blown out by another fan 15 from interfering with the opening operation of the door 18. This deflection plate 18' opens the door 18, so that a cord such as cord 17' is not necessary for this door 18.

As shown in FIG. 2, one or more fans 15 may be used to vent air into the room through exhaust openings 20 during operation, which may interfere with lighting schemes that require darkness during daylight hours. To minimize the light incident on 7 and 8, a conventional light trapping panel 21, such as a panel available from Acta Engineering and Manufacturing Corporation of Muskothie, Oklahoma, is used. . Such a panel 21 has closely spaced upright blinds 22 of serpentine cross-section, with blinds 220
It is designed to effectively restrict the incidence of light without unduly restricting the passage of air between the two.

As best shown in FIG.
! The attic 23 above the horizontal ceiling 6, between the ridges 3' forming the f119, has a continuous inlet air space 24 formed between the double external walls along one side of the building 1.
It communicates with the outside of building 1 by. The outermost wall portion, ie, the lower end of the deflection plate 25, is spaced from the ground and extends upward toward the roof 3. In a typical embodiment, the inlet air space 24 is approximately 2 feet wide and the height of the attic 23 is approximately 2 feet wide.
(2 feet).

As mentioned above, the ceiling 6 of each room 7.8 is provided with a narrow ventilation opening 26 extending in the longitudinal direction. These ventilation openings 26 are connected to the elongated ceiling 6 below the attic 23.
are spaced apart from each other at regular intervals along the The effective opening degree of each ventilation opening 26 is adjusted by sliding a sliding door 27, and as shown in FIG. It rests on a protruding lip 28.

In a typical installation, the ventilation opening 26 is approximately 33a wide.
m (13 inches) and approximately 122 CII (48 inches) in length, spaced apart from each other by approximately 122 α (48 inches), i.e., placed as close together as possible, with the sliding door 27 fully open. so as not to obstruct adjacent ventilation openings 26.

As best shown in FIGS. 3 and 7, one continuous cable 29 is connected near the ceiling 6 to one
! 7 and is attached to each sliding door 27 of one of the chambers 7, and then passes around a pulley 30 provided on the other longitudinal end wall 54 of the building 1, and the other The cable 29 is routed back through the chamber 8 of the other chamber 8, where the cable 29 is routed back through the respective sliding door 27 of the other chamber 8.
is fixed. At one longitudinal end wall 53 of the building 1, the cable 29 passes around another pulley 31 and extends to a sprocket 32 driven by a motor 33. This motor 33 operates to slide all sliding doors 27 simultaneously to increase or decrease the effective opening of all ventilation openings 26 by the same amount.

For outside temperatures between approximately -10'F and 26.7°C (below 80'F), operation of motor 33, which controls the position of fan 15 and sliding door 27, is 8 and are interconnected to maintain a substantially constant temperature. The appropriate temperature for egg-laying hens that are raised is approximately 21.1℃ (70 or below) to approximately 26.7℃ (
80'F). Each fan 15 is the fifth
It has temperature sensors schematically indicated by 34 in the figure, and when each temperature sensor 34 senses a temperature slightly exceeding a desired temperature, it activates the fan 15 corresponding to that temperature sensor 34, and When a temperature slightly lower than a predetermined temperature is detected, the fan 15 is stopped. In a typical embodiment, such temperature sensor 34 controls the temperature of the warm melon in chambers 7 and 8 to 26.7±0.
Fan 15 is operated as required to maintain a temperature of 22°C (80±0.4 below). Each fan 15 is operated separately and independently from other fans 15. A temperature sensor 35 located centrally in each chamber 7.8 activates the fans 15 in the event that the sensing device or one or more of the fans 15 malfunctions and reaches a critical temperature.

For egg-laying hens, turn on all fans 15. Emergency temperature is 35°C (95″F).

The opening of the sliding door 27 is correlated with the operation of the fan 15 to create a desired negative pressure, preferably 0.05 m below the external pressure.
254as+ to 0.762as+(0,01 to 0.
03 inches) so that a negative pressure of one column of water is maintained in chambers 7 and 8.

One way to accomplish this is to use a differential pressure sensor 36, shown schematically in FIG. It is designed to measure the pressure difference between 23 and 23.

The differential pressure sensor 36 controls the motor 33 to open and close the sliding door 27 to maintain the pressure within a desired range. In a representative embodiment, the pressure in chambers 7 and 8 is approximately 0.25% lower than the pressure in attic 23.
4 shoes to 0.762gm (0.01i>chi to 0.03
inches), the motor 33 is not activated and the sliding door 27 is held in its current position. If the pressure difference is less than about 0.254jw+(0.01 inch) water column, the motor 33 is activated to begin closing the sliding door 27, and if the pressure difference is less than about 0.762am+(0.03 inch), the motor 33 is activated and the sliding door 27 begins to open. In the illustrated embodiment, the ends of chambers 7 and 8 are interconnected for ventilation, so that all sliding doors 27 are moved at the same time and by the same amount. Approximately 1377FL (450 feet)
In the case of chambers 7.8 of greater length than each chamber 7.8, even if a number of chambers 7.8 have a common attic 23 and share a common exhaust space 19, each chamber 7. The sliding door 27 in the other chamber 7.8 must be operated separately and independently of the sliding door 27 in the other chamber 7.8, so that the respective chambers are substantially sealed from each other. In this case, it is necessary to provide each chamber with a separate differential pressure sensor 36.

The air flow pattern when the sliding door 27 is fully or partially opened is shown by arrows in FIG.

The advantage of keeping the pressure in chambers 7 and 8 lower than the pressure in the attic 23 is that fresh outside air is injected substantially as a jet into chambers 7 and 8, and that this jet of air penetrates the side walls 2 and 8 in the central passage 10. 5, the jet of air flows substantially straight downwards between opposing animal habitat areas 51 and 52. The jet of air passes under the lowest cage 9 which is spaced upwardly from the floor 11 by a distance of at least about 30.5 cs+ (1 foot). If the number of tiers is large, the distance between the lowest tier and the floor 11 is increased. A stream of air is forced under the lowermost step towards the side walls 2 and 5, then upwardly along the rear side walls 2 and 5 of the cage 9, and then the S
9 and through S9. On the other hand, since the chickens housed in the animal living areas 51 and 52 are warm-blooded,
That animal habitat 1ii! Updrafts are generated within 51 and 52. Therefore, the air flowing upward along the side walls 2 and 5 cooperates with its updraft to form a vortex, and thus the fresh outside air injected into the chambers 7 and 8 is disturbed with the air inside the chambers 7 and 8. The mixture is thoroughly mixed in a flowing state. In order to maintain substantially uniform air flow through the vertically spaced tiers, the cages 9 are spaced apart from the side walls 2 and 5 of the cages 9, with each tier and its adjacent side wall 2 .5 is larger in the lower row than in the upper row. This allows the air flow to be metered so that approximately the same volume of air passes through each stage. In a typical embodiment, the top rung is approximately 2 inches apart from the adjacent sidewalls 2.5, and each lower rung is approximately 5 inches apart than the rung above it.
It is separated from side wall 2.5 by 0.8 m (2 inches) more. This metered circulating air flow configuration exposes all chickens to substantially the same temperature environment.

Due to the generally circular air flow configuration along the side walls 2 and 5, faeces collected on the top 9' and floor 11 are quickly dried. Another advantage of the preferred air flow configuration is that as a result of the sharply deflected jet of fresh air injected at the central passage 10, most of the dust and electrostatic particles are not suspended in the air; 10.

One of the more important design considerations is that one fan 15
The problem is how much the sliding door 27 is opened when the driver is driving. The dimensions of the ventilation openings 26, in particular their width, and the extent to which the sliding door 27 is opened, ensure that fresh air flows in the desired jet into the chambers 7 and 8, and that the jet is substantially directed towards the central passage 10. It must be sufficient to flow. By providing a plurality of narrow, each distinct and spaced apart ventilation openings 26 having a width several times less than the length and no greater than about half the minimum spacing between opposing steps, For example, the sliding door 27 opens far enough to ensure the desired circular airflow configuration, as compared to if a larger number of such ventilation openings were provided to allow the sliding door to open only slightly. If a large number of ventilation openings are provided so that the sliding door can only be opened slightly, the jet mixes with the air in chambers 7 and 8 before reaching the central passage 1o, and at the top of chambers 7 and 8. It will be dissipated. For a given size and spacing of ventilation openings 26, the pressure differential range can be adjusted to obtain the desired airflow configuration.

If the pressure difference between the chambers 7 and 8 and the attic 23 is too small, the jet will dissipate before reaching the central passage 10, whereas if the pressure difference is too large, an undesirable uneven cooling will occur. This occurs in chambers 7 and 8.

The upright inlet air space 24 directs air into the attic 23 from a position close to the ground and ensures that the coldest possible air is supplied into the rooms 7 and 8. In the northern hemisphere, the building 1 is preferably oriented such that the inlet air space 24 is located on the dark north side. A long upright inlet air space 24 limits the amount of light incident into chambers 7 and 8 when sliding door 27 is open. The inlet air space 24 and the exhaust openings 20 are arranged on both sides of the building 1, so that the ventilated stale indoor air flows into the inlet air space 24! This minimizes the risk of being returned.

For egg-laying hens, the capacity of the fans 15 is such that when all fans 15 are operating, the air circulation rate is 1 minute per minute.
It is selected to have at least 0.142 TrL3 (5 cubic feet) per wing to ensure adequate cooling in warm weather. When trying to maintain an ideal indoor temperature, the temperature should be approximately -23.3℃ (-10℃).
A small amount of supplementary heating is required for outside temperatures below 29.4°C (85°C and lower), and a small amount of supplemental cooling is required for sustained outside temperatures of approximately 29.4°C (85°C and below). It is. Fourth
As shown, supplementary cooling can be provided by placing an evaporative cooling band 40 below the deflection plate 25 at the fresh outside air inlet.

A warm-blooded animal pen according to an embodiment of the invention is suitable for automatic control by a computer 37 as schematically illustrated in FIG. Each separate temperature sensor 34 for the fans 15 is connected to a computer 37 so that the computer 37 monitors the temperature of the area near each fan 15. Furthermore, the computer 37 monitors the pressure difference and adjusts the motor 3 of the sliding door 27 accordingly.
3 and also monitor the temperature emergency by using an auxiliary temperature sensor 35 mounted in the center of each chamber 7.8. In addition to the main power supply 38,
An auxiliary or emergency power source 39 should be provided in case of an accident with the main power source 38. Otherwise, given the high density of animals in captivity, even a fairly short power outage could cause considerable damage. The computer 37 is capable of controlling the lighting of the building 1 as well as all other automatic devices.

Tests were carried out to determine the number of fans 15 to be operated and the position of the sliding door 27 required depending on the desired pressure difference between chambers 7 and 8 and the roofing room 23 in a practical II.
This can be done using an alternative control system instead of the IwJ system. The computer 37 is capable of monitoring the position of the sliding door 27, as shown schematically at 41 in FIG. The motor 33 can be programmed to operate as desired. For example, testing of an embodiment generally corresponding to that illustrated has shown that when one fan 15 is operated, the sliding door 27 is approximately 20 inches wide.
It was observed that the fan 15 opened and opened progressively larger but substantially constant distances as the other fans 15 were activated.

Although preferred embodiments of the present invention have been described above, the present invention should not be limited to these embodiments, and various modifications and modifications can be made. For example, although it has been described that there are two chambers 7 and 8, there may be one or more chambers, and in the case of one chamber, the central side wall 5 is not necessary, and there may be three chambers. If more chambers are provided, the number of side walls 5 in the center may be increased.

Although the chamber has been described as being substantially sealed, the opening 200* may be provided above the central side wall 5 and above the upper end of the mirror 9, as shown in FIG.

Furthermore, when multiple stages of cages 9 are arranged, it has been explained that the interval between each stage and the adjacent side wall is larger in the lower stage than in the upper stage. It may be larger than the lower stage.

Moreover, if the opening is provided, the air outlet may be arranged in the ceiling above the central side wall and shared by the empty air outlets on both sides.

Additionally, although the ventilation openings 26 have been described as being provided in the ceiling 6 in spaced relationship along the central longitudinal axis of each chamber 7.8, they are not necessarily spaced apart from each other along the central longitudinal axis. Room 7.
For example, the ceiling 6 may be provided in a staggered manner along the longitudinal direction of the ceiling 6 .

Furthermore, although it has been described that the animal living areas 51 and 52 are placed between the vertical line passing through the ventilation opening 26 and the side walls 2 and 5, respectively, the animal living areas 51 and 52
Only one of the two may be arranged.

(Effects of the Invention) In the breeding shed for warm-blooded animals according to the present invention, a ventilation opening is provided in the ceiling, and the initial residence fIAIa is placed between the vertical line passing through the ventilation opening and the side wall, so that the ventilation Fresh, relatively cool outside air introduced vertically downward into the room by the action of gravity through the openings does not flow directly into the animal habitat, but instead flows past the animal habitat toward the floor. do.

The descending air is then deflected by the floor, flows toward the side walls, and is further deflected by the side walls to flow upward. - Since the animals housed in the animal living area are warm-blooded, an updraft is generated in the animal living area, and the air deflected by the side walls and flowing upward cooperates with the updraft. This creates a vortex and mixes with the indoor air. In this way, the outside air introduced into the room flows through the room without being locally stagnated, and a similar air environment is obtained in the room. This promotes the growth of indoor animals and increases productivity.

[Brief explanation of the drawing]

FIG. 1 is a schematic perspective view showing the entire small warm-blooded animal breeding shed according to an embodiment of the present invention, FIG. 2 is a partially cutaway enlarged perspective view of the breeding shed shown in FIG. 1, and FIG. 3 is the same as that shown in FIG. 1. Figure 4 is a cross-sectional view taken along line 3-3 of Figure 1, Figure 5 is a partially enlarged cross-sectional view showing ventilation openings provided in the ceiling, Figure 6 is a cross-sectional view taken along line 3-3 of Figure 1. 7 is a schematic diagram showing a mechanism for driving the sliding door; FIG. 7 is a block diagram of a control system used in the breeding shed shown in FIG. 1; FIG. FIG. 4 is a sectional view similar to FIG. 3 showing a blood animal breeding shed; 2゜5...Side wall, 6...Ceiling, 7.8...Room, 9...Cage, 11...Floor, 15 -... air exhaust means, i.e. fan, 26.
...Ventilation opening, 51.52...Animal living area, 56...
・Air outlet, 200...opening.

Claims (3)

[Claims] (1) a shed for the breeding of warm-blooded animals, comprising at least one elongated chamber defined by two mutually opposite side walls, a ceiling and a floor, and through said two side walls and said ventilation opening; an animal living area located in the room between the vertical line; a passage provided on the floor; a ventilation opening provided in the ceiling along the longitudinal direction of the room; air exhaust ports arranged on both sides of the opening and provided in the ceiling; and air discharged from the chamber to the outside through the air exhaust ports to create a negative pressure in the room, and the negative pressure causes the ventilation to be carried out from the outside. an air exhaust means for introducing outside air into the room through the opening, wherein the animal living area, the passageway, the ventilation opening, and the air exhaust port are arranged symmetrically with respect to a vertical plane passing through the center line. A breeding shed for warm-blooded animals, characterized by: (2) The warm-blooded animal breeding shed according to claim 1, wherein the chamber is substantially sealed. (3) A patent characterized in that two or more chambers are provided, each of the two or more chambers has one side wall in common, and the common side wall has an opening above the animal living area. A breeding shed for warm-blooded animals according to claim 1.