Ramps and egress aids for poultry, as well as rearing aviaries for poultry with such ramps and egress aids

Abstract

Ascent and descent aid (10) for poultry, in particular chicks, for reaching different rearing levels (104, 104') on a rearing aviary (100), comprising a ramp section (12) forming a treading surface (14, 14'), which is pivotable between a substantially horizontally oriented first position (P1) and a second position (P2) inclined at an angle (α) to the first position (P1), wherein the treading surface (14') of the ramp section (12) has a plurality of steps (20) in at least the inclined second position (P2).

Description

[0001] The invention relates to a ramp for poultry, particularly young birds, with a ramp section forming a tread surface, which can be pivoted back and forth between a substantially horizontal first position and a second position inclined at an angle to the first position. The invention also relates to a rearing aviary for poultry with a frame and several rearing levels formed at different heights on the frame.

[0002] Ramps and ladders are known in the prior art and are commonly used in rearing aviaries in poultry rearing facilities, particularly for laying hens. For species-appropriate husbandry, the poultry are kept within these facilities, preferably in multi-level rearing aviaries. The poultry, especially young birds such as chicks, have access to a variety of feeding and drinking facilities on the different levels of the aviary. Furthermore, the animals can retreat to resting areas. In addition, the rearing aviary is typically opened a few weeks after the chicks are introduced, allowing them access to a scratching area located outside the aviary. Such a scratching area, often a section of the barn floor, is necessary to keep the poultry occupied and to allow them to engage in their natural scratching behavior.

[0003] This housing system, however, means that the rearing levels in the rearing aviary are elevated above the stable floor and are also arranged at different heights. Especially for young animals only a few days old, ramps and steps are necessary to access the various rearing levels and the scratching area. These ramps and steps allow them to move freely between the different levels within the rearing aviary, or from the rearing aviary to the scratching area and back again. To ensure the animals' freedom of movement, it is common practice to provide ramps and steps in a rearing aviary that can be adapted to the age and corresponding needs of the animals. These ramps and steps also facilitate easy cleaning underneath and in front of the rearing aviaries when needed.

[0004] From DE 20 2020 101 146 U1, for example, a ramp for poultry is known, which has a ramp section forming a tread surface and can be pivoted back and forth between a first position that is essentially horizontal and a second position that is inclined at an angle α to the first position. In the first position, where the ramp section is essentially horizontal, it forms an intermediate level at the rearing aviary, from which the animals can then access the entry area of ​​the rearing aviary. To clean the area in front of or next to the rearing aviary, the ramp section is moved upwards from the first position by approximately 90° to the second position. Chicken chicks that are a few days old require, in addition to the ramp section, ramp elements arranged in conjunction with it to bridge the height difference between the two rearing levels.However, even bridging ramp elements with their sloping surfaces can still pose certain challenges for chicks just a few days old. Ladders running on an inclined plane with rungs and open sections between them are also known to present similar difficulties for the young birds.

[0005] Therefore, the invention is based on the objective of providing an ascent and descent aid for poultry animals, by means of which both efficient and species-appropriate keeping of young animals, in particular day-old chicks, in a rearing aviary is made possible.

[0006] The invention solves the underlying problem in a ramp for poultry with the features according to claim 1. In particular, the tread surface of the ramp part has a plurality of steps in at least the inclined, second position.

[0007] The invention proposes that the ramp section, in its first position where it is essentially horizontal, can continue to be used as a kind of intermediate level at a rearing aviary. However, the access aid is to be positioned at a height above the aviary floor that does not obstruct cleaning of the aviary floor in front of or next to the rearing aviary. Furthermore, contrary to the solution known in the prior art using the pivoting ramp section, it is proposed that in its second position, where the ramp section is inclined at an angle α to a horizontal plane, in particular to a rearing level or the aviary floor, a walking element inclined towards the aviary floor is provided, which is particularly easy to use for young animals, especially day-old chicks.In the inclined, second position, the ramp section forms numerous steps on the platform, which are significantly easier for day-old chicks to use to overcome height differences in the rearing aviary. This allows even chicks just a few days old to begin training their musculoskeletal system at an early stage. Ideally, the steps in the inclined position of the ramp element extend the entire length of the platform.

[0008] According to a preferred embodiment, the tread surface is formed from a plurality of tread surface elements, which are configured to create a substantially flat tread surface in the horizontal position of the ramp section and a stepped tread surface in the second position, which is inclined at an angle α to the first position. The ramp section according to the invention can thus fulfill a beneficial function in both positions during the rearing of poultry in the rearing aviary. Preferably, the ramp section is configured, by means of the plurality of individual tread surface elements, to form a flat floor element in the rearing aviary in its horizontal position. The ramp section as a floor element can then be part of a rearing level.Preferably, the ramp section, in its second position inclined at an angle α to the horizontal position, is used as a ramp with a preferably continuously stepped tread surface. Such a ramp allows the poultry to easily reach the various rearing levels within the rearing aviary, or, when the rearing aviary is open, to move freely from it into the scratching area, such as a barn floor or the like.

[0009] A further development of the ramp and descending aid provides that the platform has numerous tread elements, which are movably mounted on the ramp section in such a way that each individual tread element has an approximately horizontally oriented step surface, regardless of the ramp section's pivot position. The ramp section, which can be pivoted back and forth between the first and second positions as needed, features, in particular, a tread surface that is always adaptable to its incline. The tread elements forming the platform have step surfaces or upper surfaces that are always horizontal, regardless of the incline or any angular position of the ramp section. This makes it possible for even day-old chicks to walk on a preferably inclined ramp section at any angle.The ramp section according to the invention, with its numerous tread elements, forms a virtually continuous walking surface in its horizontal position. In this context, the term "continuous" or "continuous" does not refer to a completely closed design of the walking surface, but merely to the formation of a continuous plane without any height difference or the provision of larger recesses in the walking surface that could pose a potential risk of injury to the poultry. Preferably, the ramp section has several rows of individual tread elements arranged side by side and one behind the other to form the walking surface.

[0010] According to a preferred embodiment of the invention, the tread surface itself, as well as the tread surface elements forming the tread surface on the ramp section, have a type of grid or rib structure with a plurality of openings interrupting the contact plane of the tread surface. This ensures that excrement accumulating during the rearing of poultry does not remain on the tread surface on the ramp section, but is instead channeled into a manure collection level below due to the open design of the tread surfaces.

[0011] Preferably, the ramp section has a first end with a pivot bearing and a second end arranged opposite to the first end, pivotable about the pivot bearing and preferably including a locking mechanism for securing the ramp section in its horizontal position. The ramp section, which in one possible embodiment can have a length I in the range of 0.6 m to approximately 1.5 m and a width b in the range of 0.15 m to 0.3 m, has a pivot bearing at its first end about which the ramp section can pivot through an angle α of at least 90°. The first end of the ramp section is preferably fixedly mounted to a receptacle on the rearing aviary. In the mounted state, the first end of the ramp section with its pivot bearing forms a fixed point on the rearing aviary about which the ramp section can be pivoted through the specified angle α.At the second end of the ramp section, a locking mechanism is provided, by means of which the ramp section can be attached to the rearing aviary in at least its horizontal position for the implementation of a horizontally running floor element on a rearing level.

[0012] According to a preferred embodiment, the tread elements on the ramp section are movably connected to one another by means of a coupling mechanism extending from the first to the second end of the ramp section. The coupling mechanism is specifically designed to move all individual tread elements relative to one another when the ramp section is pivoted. Preferably, the pivoting of the ramp section via the coupling mechanism results in a synchronous movement of the tread elements on the ramp section. The coupling mechanism ensures parallel guidance of the tread elements and thus preferably horizontal alignment of the tread surface on the tread elements of the ramp section in any pivot position between the first horizontal position and the second position inclined at an angle to the first, i.e., also in any adjustable intermediate position.By means of the coupling mechanism, the flat, nearly closed tread surface of the ramp section in its first horizontal position is transformed into a stepped tread surface with a plurality of steps when the ramp section is moved into its second inclined position. Preferably, the ramp section has at least two rows of individual tread elements connected to the coupling mechanism in its width direction. In one embodiment, the ramp section has at least ten, preferably about twenty to thirty, rows of individual tread elements connected to the coupling mechanism in its length direction.

[0013] In a preferred embodiment of the ascent and descent aid, the coupling mechanism comprises at least two rod elements aligned parallel to each other, each connected at its end by retaining elements, with each tread element being coupled to each of the rod elements by a pivot bearing. The rod elements form the basis of the coupling mechanism for the ramp section according to the invention and the parallel guidance of the tread elements thereby implemented, which are preferably always aligned parallel to each other, regardless of the pivot position of the ramp section about its first end. Two adjacent ends of the rod elements are connected to each other by a retaining element. The retaining elements are designed such that, in particular, the ends of the rod elements received by a retaining element can move relative to each other.All tread elements forming the walking surface on the ramp section are movably coupled to each of the rod elements via a pivot bearing. This ensures that when the ramp section pivots and the two rod elements move relative to each other, the tread elements on the ramp section preferably move synchronously. The coupling mechanism comprises at least two rod elements, defining a first pair of rod elements. Preferably, in a further embodiment, the coupling mechanism includes a second pair of rod elements arranged parallel and offset to the first pair. The ramp section exhibits increased torsional stiffness by means of the preferably four rod elements. When using two sets of rod elements, the adjacent ends are connected to the same retaining element.Preferably, the pivot axis at the first end of the ramp part runs approximately transversely to the longitudinal direction of the ramp part and, in particular, to the rod elements of the coupling mechanism running in the longitudinal direction of the ramp part.

[0014] According to a preferred embodiment of the ramp section, each rod element is attached at one end to one of the retaining elements by means of a pivot bearing, and the opposite end of each rod element is rotatably and translationally mounted on the respective opposite retaining element by means of a rotary slide guide. The necessary relative movement of the rod elements to each other, and thus the synchronous movement of the tread elements when adjusting the ramp section, is achieved by means of the connection of the rod elements to the retaining elements arranged at the ends of the ramp element according to the invention. Each rod element is designed to be rotatable at one end via the pivot bearing relative to the retaining element, but is otherwise fixed to the retaining element. The opposite end of the rod element is mounted on the other retaining element by means of a rotary slide guide.Preferably, the rotary guide is designed as a type of curved track on the respective holding element. The second end of the rod element, which is received in the rotary guide, is thus rotatable and slidable relative to the holding element when the ramp section is adjusted between the first and second positions.

[0015] According to a preferred embodiment of the ascent and descent aid, the retaining elements, to which each of the two rod elements is attached by means of a pivot bearing, are arranged at opposite ends of the ramp section. By arranging the pivot bearings, which connect the rod elements to the retaining element in a fixed but movable manner, at opposite ends of the ramp section, the rotary guides for each of the retaining elements are also arranged on retaining elements located at opposite ends of the ramp section. When the ramp section pivots from its first essentially horizontal position to its second inclined position, the rod elements of the coupling mechanism, to which the tread elements are attached, are preferably aligned parallel to each other over the entire range of motion of the ramp section.In this process, at least the distance between the longitudinal axes of the two rod elements as well as the position of the two rod elements in the axial direction relative to each other can change, which causes the adjustment movement of the multitude of tread surface elements on the ramp section.

[0016] Preferably, a holding element arranged at the pivotable end of the ramp section is equipped with a support foot located on the underside of the holding element. Particularly when moving the ramp section from its first essentially horizontal position to its second inclined position, the ramp section can be easily and safely placed on a surface defining the second position, such as the stable floor or one of the rearing levels in the rearing aviary, once it reaches its final position in the second position. The support foot preferably forms the underside of the holding element and a particularly flat support surface.By means of the coupling mechanism with its at least two rod elements extending in the longitudinal direction of the ramp section, which also connects both holding parts, the support foot is also moved similarly to the tread surface elements during the adjustment movement of the ramp section in such a way that the support surface on the support foot also has a permanently horizontal orientation.

[0017] In a preferred embodiment, a retaining element arranged at the first end of the ramp section forms the pivot bearing for the ramp section, and / or a retaining element arranged at the second, pivotable end of the ramp section has a handle for actuating the locking mechanism located thereon. Preferably, the retaining element at the first end of the ramp section, where the pivot bearing for the ramp section itself is formed, is fixed in place and thus immovably attached, in particular, to a receptacle on the rearing aviary. The retaining element arranged at the second, pivotable end of the ramp section also maintains its identical orientation to the retaining element at the first end of the ramp section in every position of the ramp section, even if the position of the retaining elements changes relative to each other. Preferably, both retaining elements arranged at the respective ends of the ramp section have a substantially parallel orientation to each other.To move the ramp section from its initial, essentially horizontal position, a handle in the form of a trigger is provided on the second retaining element for actuating the locking mechanism located on the retaining element. This allows for easy release of the locking mechanism, enabling the ramp section to be moved from its normally locked first position towards the second, inclined position.

[0018] According to a second aspect, the invention relates to a rearing aviary for poultry, comprising a frame and several rearing levels formed at different heights on the frame.

[0019] The invention also solves the problem underlying the climbing and descending aid according to the invention by providing at least one climbing and descending aid according to one of the preferred embodiments of the invention described above on the rearing aviary. With a rearing aviary equipped according to the invention in this way, the rearing of poultry, especially chicks, is simplified from the outset. With the climbing and descending aid according to the invention, even chicks only one day old can move easily and safely between the different rearing levels of the aviary. Thus, by training their musculoskeletal system, the physical structure of the poultry is challenged and promoted from day one in such a rearing aviary, thereby improving the overall well-being of the poultry kept within such a rearing aviary according to the invention.

[0020] According to a further aspect, the invention relates to the use of an ascent and descent aid according to one of the preferred embodiments described above in a rearing aviary for poultry in a substantially horizontal, first position as a floor element of a rearing level and in a second position inclined at an angle to the first position as a ramp connecting several rearing levels.With the embodiment according to the invention, it is possible to use an inventive ramp for poultry, with its pivotally arranged ramp section, not only for overcoming height differences within the rearing aviary, but also, if separation of the different rearing levels within the aviary is desired, to repurpose the ramp sections as a horizontally extending floor element of a single rearing level by simply pivoting them from their second inclined position to the first, essentially horizontally oriented position. The ramp section according to the invention is designed such that in its first, horizontally oriented position it defines an essentially flat tread surface, and in its second, inclined position, a stepped tread surface with a plurality of steps.

[0021] The preferred embodiments and further developments of the mounting and dismounting aid according to the invention are also preferred embodiments of the rearing aviary according to the invention and of the use of such a mounting and dismounting aid according to the invention. The preferred embodiments and further developments described for the rearing aviary according to the invention and for the use of the mounting and dismounting aid, which relate to the mounting and dismounting aid itself, are also preferred embodiments of the mounting and dismounting aid.

[0022] The invention is described in more detail below with reference to a preferred embodiment and the accompanying figures. These figures show: Fig. 1: a perspective view of an ascent and descent aid for poultry according to the invention in a first essentially horizontal position; Fig. 2: a perspective view of the ascent and descent aid in a second position inclined at an angle to the first position; Fig. 3: A front view of the ascent and descent aid in the first position; Fig. 4: A front view of the ascent and descent aid in the second position; Fig. 5: a front view of the ascent and descent aid according to the invention in an intermediate position; Fig. 6: A perspective view of a rearing aviary according to the invention with an ascent and descent aid according to Fig. 1, and Fig. 7: A front view of the rearing aviary after Fig. 6.

[0023] Fig. Figure 1 shows a ramp 10 for poultry, especially chicks. The ramp 10 comprises a ramp section 12, which forms a tread 14 for the poultry passing over the ramp section 12. Furthermore, the ramp section 12 is connected by a first in Fig. The ramp section 12, shown in Figure 1, is movable from its essentially horizontally oriented position P1 to a second position P2 inclined at an angle α to the first position. In particular, the ramp section 12 is designed to pivot back and forth between the first position P1 and the second position P2.

[0024] As from Fig. As can be further seen in Figure 1, the tread surface 14 is formed from a plurality of tread surface elements 16, 16', which are designed to produce a substantially flat tread surface 14 in the horizontal position P1 of the ramp section 12. The flat tread surface 14 is formed almost continuously in the horizontal position P1 of the ramp section 12, even though a plurality of openings 18 are provided in the tread surface 14 or the tread surface elements 16, 16' themselves, through which excrement produced during the rearing of poultry can move through the tread surface 14.

[0025] Fig. Figure 2 shows the ramp 10 according to the invention with its ramp section 12 in the second position P2, which is inclined at an angle α to the first position P1. It can be seen that the tread surface 14 of the ramp section 12 forms a plurality of steps 20 for the poultry passing over the ramp section 12 in the inclined second position P2. In particular, the tread surface elements 16, 16' forming the tread surface 14 are configured to create a stepped tread surface 14' in the second position P2 by means of the plurality of steps 20.

[0026] As from the Fig. 1 and Fig. As can be further seen from Figure 2, the ramp section 12 has a first end 24 and a second end 26 arranged opposite to the first end 24. A pivot bearing 28 is formed at the first end 24, about which the second end 26 can pivot. A locking mechanism 30 is provided at the second end 26, by means of which the ramp section 12 can be locked in the Fig. The horizontal position P1 shown in Figure 1 is locked onto a mounting 32 of a fixed surface element 34 of the ascent and descent aid 10.

[0027] In one embodiment, the tread elements 16, 16' are movably connected to one another by means of a coupling mechanism 36 extending from the first to the second end of the ramp section 12. The coupling mechanism 36 is preferably configured to move all tread elements 16, 16' relative to each other when the ramp section 12 is pivoted. In particular, all tread elements 16, 16' are moved synchronously to each other when the ramp section 12 is moved between the first and second positions P1, P2.

[0028] What's next? Fig. As can be seen in Figure 2, the coupling mechanism 36 has at least two rod elements 38, 38' aligned parallel to each other, each of which is connected to the other at its end by retaining elements 40, 40'. As the Fig. As can be seen from Figures 2-5, each tread element 16, 16' is coupled to each of the rod elements 38, 38' via a pivot bearing 42, 42'. When the ramp section 12 pivots and the rod elements 40, 40' move about the pivot bearing 28 at the first end 24, the relative movement of the tread elements 16, 16' to the rod elements and of the tread elements 16, 16' to each other is transmitted via the pivot bearings 42, 42'. The tread elements 16, 16' on the tread surface 14 are movably mounted on the ramp section 12, in particular by means of the coupling mechanism 36, such that each individual tread element 16, 16', as shown in the figures, Fig. 3-5 further shows that, regardless of the pivot position of the ramp section 12, the step surface 44 is approximately horizontally aligned.

[0029] The retaining elements 40, 40' are arranged at opposite ends of the ramp section 12, with the retaining element 40 being provided at the first end 24 of the ramp section 12, which in the embodiment shown here forms the pivot bearing 28 for the ramp section 12. The further retaining element 40' is arranged, in particular, at the second, pivotable end 26 of the ramp section 12, on which the locking mechanism 30 for locking the ramp section 12 and a handle 46 cooperating with the locking mechanism 30 for actuating the locking mechanism 30 are provided.

[0030] Each of the retaining elements 40, 40' has one of the rod elements 38, 38' rotatably attached to it by means of a rotary bearing 48. Furthermore, the end of the other rod element 38, 38' is mounted on each retaining element 40, 40' by means of a rotary guide 50, allowing both rotational and translational movement. Thus, the rod element 38 is connected at one end via the rotary bearing 48 to the retaining element 40 at the first end 24 of the ramp section 12 and at its opposite end via the rotary guide 50 to the retaining element 40' at the second end 26 of the ramp section 12.

[0031] The rod element 38', on the other hand, is connected at one end via the pivot bearing 48 to the retaining element 40' at the second end 26 of the ramp section 12 and at its opposite end via the rotary guide 50 to the retaining element 40 at the first end 24 of the ramp section 12. Both rod elements 38, 38' are therefore attached at one of their ends to one of the retaining elements 40, 40' by means of the pivot bearing 48, which are arranged at opposite ends 24, 26 of the ramp section 12.

[0032] How further Fig. 2 and Fig. As can be seen from Figure 4, a mounting foot 52 is provided on the retaining element 40', projecting from the underside of the retaining element 40', which is arranged at the pivotable, second end 26 of the ramp section 12. As the Fig. As further illustrated in Figures 2-5, the retaining element 40 at the first end 24 of the ramp section 12 forms a fixed point, relative to which the retaining element 40' at the second end 26 of the ramp section 12 is movable. The retaining elements 40, 40' at the opposite ends 24, 26 of the ramp section 12 each have a fixed, essentially parallel alignment with each other, regardless of the position of the ramp section 12. This, in conjunction with the coupling mechanism 36, ensures that the preferably horizontal alignment of the tread surfaces 44 on each of the tread surface elements 16, 16' is achieved in all pivot positions of the ramp section 12.

[0033] The Fig. 6 and Fig. Figure 7 shows an illustration of a rearing aviary 100 according to the invention for poultry, comprising a frame 102 and several rearing levels 104, 104' formed at different heights on the frame 102. By means of the ramp 10 according to the invention, with its steps 20 formed in a plurality of positions 14' on the inclined surface 14' of the ramp section 12 in the inclined position P2, the poultry can move safely and, above all, easily between the different rearing levels 104, 104'. The ramp 10 according to the invention also allows, as Fig. Figure 7 shows the poultry moving from the lower rearing level 104 into the scratching area 106 in front of the rearing aviary 100.

[0034] Each ascent and descent aid 10 according to the invention, with its ramp section 12, which in the embodiment shown here interacts with a surface element 34 that can be coupled to the second, pivotable end 26 of the ramp section 12, can be mounted relatively easily on a horizontally extending strut 108 of the frame 102. The ascent and descent aid 10 according to the invention fulfills a dual function on the rearing aviary 100. Firstly, in its second, inclined position P2, the ascent and descent aid 10 serves as a ramp for the poultry, enabling them to move between the different rearing levels 104, 104', and in the first, essentially horizontal position P1, it serves as a floor element 112 separating the different rearing levels 104, 104' on the rearing aviary 100.

[0035] Similar or identical components are marked with the same reference symbols. Reference sign 10 Ascent and descent assistance 12 Ramp section 14, 14' tread surface 16, 16' tread element 18 Breakthrough 20 steps 24 first end 26 second end 28 swivel bearings 30 Locking mechanism 32 recording 34 surface element 36 coupling mechanism 38, 38' Rod element 40, 40' Holding element 42, 42' Swivel bearing 44 step surface 46 Handle 48 swivel bearings 50 Rotary-sliding guide 52 Mounting foot 100 breeding aviaries 102 Frame 104, 104' Rearing level 106 scratching area 108 Strut 110 Ramp 112 floor element α angle P1 first position P2 second position QUOTES INCLUDED IN THE DESCRIPTION

[0000] This list of documents cited by the applicant was automatically generated and is included solely for the reader's convenience. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions. Cited patent literature

[0000] DE 20 2020 101 146 U1

[0004]

Claims

[1] Ascent and descent aid (10) for poultry, in particular chicks, for reaching different rearing levels (104, 104') on a rearing aviary (100), comprising a ramp section (12) forming a treading surface (14, 14') which is pivotable between a substantially horizontally oriented first position (P1) and a second position (P2) inclined at an angle (α) to the first position (P1), wherein the treading surface (14') of the ramp section (12) has a plurality of steps (20) in at least the inclined second position (P2). [2] Ascent and descent aid (10) according to claim 1, characterized by, that the tread surface (14, 14') is formed from a plurality of tread surface elements (16, 16') which are arranged to produce a substantially flat tread surface (14, 14') in the horizontal position (P1) of the ramp part (12) and a stepped tread surface (14, 14') in the second position (P2) with the plurality of steps (20). [3] Ascent and descent aid (10) according to claim 1 or 2, characterized by , that the tread surface (14, 14') has a plurality of tread surface elements (16, 16') which are movably mounted on the ramp part (12) such that each individual tread surface element (16, 16') has an approximately horizontally oriented tread surface (44) regardless of the pivot position (P1, P2) of the ramp part (12). [4] Ascent and descent aid (10) according to one of claims 1 to 3, characterized by, that the ramp part (12) has a first end (24) on which a pivot bearing (28) is formed, and a second end (26) arranged opposite to the first end (24), which is pivotable about the pivot bearing (28) and which preferably includes a locking mechanism (30) for locking the ramp part (12) in its horizontal position (P1). [5] Ascent and descent aid (10) according to one of claims 2 to 4, characterized by , that the tread surface elements (16, 16') are movably connected to each other by means of a coupling mechanism (36) extending from one / the first to one / the second end (24, 26) of the ramp part (12), which is designed to move all tread surface elements (16, 16') relative to each other, preferably synchronously, by pivoting the ramp part (12). [6] Ascent and descent aid (10) according to claim 5, characterized by, that the coupling mechanism (36) has at least two rod elements (38, 38') aligned parallel to each other, which are each connected at their ends via retaining elements (40, 40'), and wherein each tread surface element (16, 16') is coupled to each of the rod elements (38, 38') via a pivot bearing (42, 42'). [7] Ascent and descent aid (10) according to claim 6, characterized by , that each rod element (38, 38') is attached at one of its ends to one of the retaining elements (40, 40') by means of a rotary bearing (48) and the oppositely arranged end of each rod element (38, 38') is rotatorably and translationally movable on the respective opposite retaining element (40, 40') by means of a rotary slide guide (50). [8] Ascent and descent aid (10) according to claim 6 or 7, characterized by, that the retaining elements (38, 38'), to which each of the two rod elements (38, 38') is attached by means of a pivot bearing (48), are arranged at opposite ends (24, 26) of the ramp part (12). [9] Ascent and descent aid (10) according to any one of claims 4 to 8, characterized by , that a holding element (40') arranged at the pivotable end (26) of the ramp section (12) is equipped with a support foot (52) arranged on the underside of the holding element (40'). [10] Ascent and descent aid (10) according to any one of claims 4 to 9, characterized by , that a retaining element (40) arranged at the first end of the ramp part (12) forms the pivot bearing (28) for the ramp part (12) and / or a retaining element (40, 40') arranged at the second pivotable end (26) of the ramp part (12) has a handle (46) for actuating the locking mechanism (30) arranged thereon. [11] Rearing aviary (100) for poultry, comprising a frame (102) and several rearing levels (104, 104') formed at different heights on the frame (102), and at least one climbing aid (10) according to any one of the preceding claims 1 to 10. [12] Use of an ascent and descent aid (10) according to any of the preceding claims 1 to 10 in a rearing aviary (100) for poultry in a substantially horizontal, first position (P1) as a floor element (112) of a rearing level (104) or in a second position (P2) inclined at an angle (α) to the first position (P2) as a ramp (110) connecting several rearing levels (104, 104').

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