A poultry stress detection device

Abstract

The present application provides a kind of poultry stress state detection device, it is related to poultry ethology detection technical field, including detection bin, clamping mechanism and pressing mechanism;Detection bin one end is open and middle part is equipped with partition area, and rotatable turn-over ring is installed at partition area;Clamping mechanism includes first telescopic cylinder and clamping assembly, two first telescopic cylinders are installed in turn-over ring both sides, and telescopic shaft end is equipped with clamping assembly;Pressing mechanism includes second telescopic cylinder, third telescopic cylinder and pressing assembly, second telescopic cylinder is installed in detection bin top, third telescopic cylinder is installed in detection bin one end, and telescopic shaft end of second telescopic cylinder and third telescopic cylinder is equipped with pressing assembly.The present application realizes poultry turnover by turn-over ring, avoids the difference of artificial operation strength, uses clamping mechanism to fix poultry body, guarantees the posture of poultry stable in turnover process, improves induction success rate, and two pressing assemblies correspond the pressing demand of chest and abdomen and head respectively, to realize standardization pressing operation.

Description

Technical Field

[0001] This invention relates to the field of poultry behavioral testing technology, specifically to a poultry stress state detection device. Background Technology

[0002] In modern intensive poultry farming, high-density rearing, monotonous environments, frequent flock transfers, and immunization procedures can easily lead to chronic stress in poultry. This not only significantly reduces their production performance and immunity levels but also seriously harms animal welfare. Therefore, establishing scientific and standardized methods for assessing poultry stress is of great significance for poultry production management and animal welfare research.

[0003] The tonic immobility (TI) test is currently the internationally recognized gold standard for assessing fear levels and stress sensitivity in poultry. Its principle is to induce a state of generalized rigidity and apparent death by restricting poultry behavior. The duration of TI is significantly positively correlated with the poultry's fear level. The standard operating procedure for the TI test is as follows: place the poultry face up on the testing table, gently press its chest, abdomen, and head for 10-15 seconds to induce rigidity, then the operator removes the poultry and records the time it takes for the poultry to spontaneously turn over and stand up, thus quantifying its stress level. However, current TI tests rely heavily on manual operation, which introduces many uncontrollable variables, severely affecting the accuracy and consistency of the test results.

[0004] Individual differences exist in the pressure applied by operators to the chest, abdomen, and head of poultry, and even the same operator cannot maintain complete consistency across different tests. This variation directly leads to fluctuations in the success rate of TI induction, and poultry with the same stress level may exhibit significantly different TI durations due to different pressure conditions, making the test data incomparable and unrepeatable. Furthermore, eye contact between humans and poultry can be extremely disruptive. As predators, poultry have a natural fear instinct towards direct eye contact and will perceive the operator's eye contact as an extreme threat signal from a predator. This visual stimulation significantly enhances the poultry's fear response, leading to abnormally prolonged TI durations and severely inflated test results.

[0005] Therefore, there is an urgent need to develop a poultry stress state detection device that can achieve standardized control in order to eliminate the core interference variables caused by manual operation and improve the accuracy and reliability of the detection results. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention proposes a poultry stress detection device to solve the problems of individual differences in the force applied when manually pressing the chest, abdomen, and head of poultry, as well as inaccurate detection results due to eye contact with the poultry.

[0007] The objective of this invention is achieved through the following technical solution: The present invention provides a poultry stress state detection device, comprising a detection chamber, a clamping mechanism and a pressing mechanism; The detection chamber has an open end and a partition area in the middle. An axially rotatable turning ring is installed in the partition area. A drive assembly for driving the turning ring to rotate is installed on the detection chamber. The clamping mechanism includes a first telescopic cylinder and a clamping assembly. The two first telescopic cylinders are respectively installed on both sides of the turning ring, and the telescopic shaft ends of the two first telescopic cylinders face each other and are respectively equipped with clamping assemblies. The pressing mechanism includes a second telescopic cylinder, a third telescopic cylinder, and a pressing assembly. The second telescopic cylinder is installed on the top of the detection chamber, and the third telescopic cylinder is installed at the end of the detection chamber away from the open end. The telescopic shaft ends of the second and third telescopic cylinders both extend into the detection chamber and are respectively equipped with pressing assemblies.

[0008] Furthermore, the pressing assembly includes a connecting plate, a pressure plate, and a pressure sensor. The connecting plate is connected to the corresponding telescopic shaft end and has side plates installed on both sides. The pressure sensor is installed on the connecting plate. The pressure plate is slidably installed between the two side plates in a direction close to or away from the corresponding telescopic shaft and is connected to the pressure sensor by a first elastic element.

[0009] Furthermore, first rotating rings are respectively installed at both ends of the outer side of the turning ring, and two second rotating rings are respectively installed on the outer side of the detection chamber. The two second rotating rings are rotatably connected to the two first rotating rings. The drive assembly includes a first motor, a first gear and a gear ring. The gear ring is mounted around one of the first rotating rings. The first motor is mounted on the detection chamber and its output shaft end is equipped with a first gear that meshes with the gear ring.

[0010] Furthermore, the clamping assembly includes a push block, a main clamping block, and side clamping blocks. The push block is installed on the telescopic shaft end of the first telescopic cylinder and has a cavity on the side facing the inside of the turning ring. The main clamping block is slidably installed in the cavity and connected to the inner wall of the cavity by a second elastic element. Racks are installed on the upper and lower sides of the main clamping block, respectively. The two side clamping blocks are rotatably installed on the upper and lower sides of the push block, and a second gear that meshes with the rack on the side of the side clamping block is installed on the rotatable connecting end of the side clamping block.

[0011] Furthermore, the main clamping block is tightly fitted to the inner wall of the cavity, the side clamping block has a receiving cavity inside and is open at the far end, a tube is connected between the receiving cavity and the cavity, and an extension block is slidably installed in the receiving cavity.

[0012] Furthermore, a piston plate is provided at one end of the extension block located inside the storage cavity, which fits against the inner wall of the storage cavity, and a limiting part is installed at the opening of the storage cavity, which fits against the side wall of the extension block.

[0013] Furthermore, a sliding block is installed at the telescopic shaft end of the first telescopic cylinder, and the push block is slidably connected to the sliding block. Guide plates are installed on both sides of the inner side of the turning ring sleeve, and guide grooves are opened laterally on the guide plates. Two branch grooves are provided at the end of the guide groove away from the center of the turning ring sleeve. Sliding pins that are slidably connected to the guide grooves are provided on both sides of the push block.

[0014] Furthermore, a door panel is rotatably installed on the lower side of the opening of the testing chamber, and a second motor is installed on the testing chamber, with the output shaft end of the second motor connected to the rotating shaft of the door panel.

[0015] Furthermore, a feeding trough is installed on the inner wall of the detection chamber away from the opening.

[0016] Furthermore, a camera is installed on the inner wall of the detection chamber.

[0017] As can be seen from the above technical solution, the present invention provides a poultry stress state detection device: 1. The automatic turning of poultry is achieved through the turning ring, replacing manual turning action and avoiding the difference in force of manual operation. The clamping mechanism fixes the poultry body to ensure the stability of the poultry posture during the turning process and improve the success rate of induction. Two pressing components correspond to the pressing needs of the chest, abdomen and head respectively, realizing standardized pressing operation. The entire testing process is carried out in a sealed testing chamber, effectively isolating external light and visual interference, eliminating the influence of human factors on the test results. 2. When the first telescopic cylinder pushes the push block to move towards the center of the turning ring, the main clamping block first comes into contact with the side of the poultry's body. As the push block continues to move, the main clamping block is pressed into the cavity, while the second elastic element is compressed to achieve buffering. When the main clamping block moves, it drives the rack to move synchronously, and through the meshing transmission with the second gear, it drives the upper and lower side clamping blocks to rotate inward, close to the upper and lower sides of the poultry. The main clamping block contacts and is pressed into the cavity first, providing buffering in the initial stage of clamping, avoiding hard impacts that may frighten and injure the poultry. The movement of the main clamping block synchronously drives the side clamping blocks to rotate, achieving simultaneous clamping from multiple directions, including the sides and top and bottom, significantly improving the clamping effect. Furthermore, the compression amount of the second elastic element automatically changes with the size of the poultry, automatically adjusting the clamping force and clamping range according to the size of the poultry to achieve stable clamping. 3. When the main clamping block is pressed into the cavity, the air inside the cavity is compressed and the pressure increases. The high-pressure air enters the receiving cavity inside the side clamping block through the pipe body, pushing the extension block to extend outward from the open end of the receiving cavity, further improving the clamping degree on the upper and lower sides of the poultry. By automatically extending the extension block during the clamping process, the clamping contact area is further increased, ensuring that the poultry will not slip during the turning process, achieving stable turning, and dispersing the clamping pressure to avoid excessive local pressure causing harm to the poultry. 4. After the turning ring rotates 180 degrees to turn the poultry over and induce it into the TI state, the first telescopic cylinder drives the push block to move away from the center. At this time, under the action of gravity, the push block causes the sliding pin to slide into the lower slot, realizing the action of releasing the clamp while lowering the poultry. The push block automatically lowers the poultry while releasing the clamp, which can place the poultry stably at the bottom of the testing chamber, avoiding the poultry falling due to direct release, reducing stress response. Moreover, since the guide plate is equipped with two symmetrical bifurcated slots, after the turning ring rotates, it does not need to be reset and can be directly put into the next test. It is particularly suitable for multiple tests on the same poultry. After one test, the poultry does not need to be removed and can be directly put into the next test, avoiding repeated reset of the device and bumping of the poultry, which would increase poultry stress and significantly improve testing efficiency and data accuracy. Attached Figure Description

[0018] To more clearly illustrate the specific embodiments of the present invention, the accompanying drawings used in the specific embodiments will be briefly described below. In all the drawings, the elements or parts are not necessarily drawn to scale.

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the main structure of the present invention; Figure 3 This is a cross-sectional view of the side structural schematic diagram of the present invention; Figure 4 This is a three-dimensional structural diagram of the turning ring in this invention; Figure 5 This is a cross-sectional view of the main structural schematic diagram of the turning ring in this invention; Figure 6 for Figure 5 A magnified view of a section at point A in the middle; Figure 7 This is a schematic diagram of the internal structure of the side clamping block in this invention; Figure label: Detection chamber 1, partition area 11, turning ring 12, first rotating ring 121, drive assembly 13, first motor 131, first gear 132, gear ring 133, second rotating ring 14, guide plate 15, guide groove 151, support groove 152, door panel 16, second motor 17, feeding trough 18, camera 19. Clamping mechanism 2, first telescopic cylinder 21, sliding block 211, clamping assembly 22, push block 221, cavity 2211, second elastic element 2212, sliding pin 2213, main clamping block 222, rack 2221, side clamping block 223, second gear 2231, storage cavity 2232, tube body 2233, limiting part 2234, extension block 224, piston plate 2241; The components include a pressing mechanism 3, a second telescopic cylinder 31, a third telescopic cylinder 32, a pressing assembly 33, a connecting plate 331, a pressure plate 332, a pressure sensor 333, a side plate 334, and a first elastic element 335. Detailed Implementation

[0020] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided below.

[0021] like Figure 1-7 As shown, this embodiment provides a poultry stress state detection device, which includes a detection chamber 1, a clamping mechanism 2, and a pressing mechanism 3.

[0022] The inner wall of the testing chamber 1 can be coated with a matte black coating to reduce light reflection and meet the low-light environment requirements of TI experiments. This embodiment uses a chicken as an example; the internal dimensions of the testing chamber 1 are designed to allow an adult chicken to enter freely. The testing chamber 1 has an open end and a partition area 11 in the middle, forming a spatial interval in the middle of the chamber. A rotatable turning ring 12 is installed at the partition area 11. When the turning ring 12 is upright or rotated 180 degrees, its inner wall can fit and connect with the inner wall of the testing chamber 1. A drive assembly 13 is installed on the testing chamber 1 to drive the turning ring 12 to rotate.

[0023] Specifically, first rotating rings 121 are respectively installed at both ends of the outer side of the turning ring 12, and two second rotating rings 14 are respectively installed on the outer side of the detection chamber 1. The two second rotating rings 14 are rotatably connected to the two first rotating rings 121 through bearings. The drive assembly 13 includes a first motor 131, a first gear 132, and a gear ring 133. The gear ring 133 is mounted around one of the first rotating rings 121. The first motor 131 is mounted on the detection chamber 1, and its output shaft end is equipped with a first gear 132 that meshes with the gear ring 133. When it is necessary to turn the poultry, the first motor 131 drives the first rotating ring 121 and the turning ring 12 to rotate through the meshing of the first gear 132 and the gear ring 133.

[0024] Preferably, a door panel 16 is rotatably mounted on the lower side of the opening of the testing chamber 1. A second motor 17 is installed on the testing chamber 1, and the output shaft of the second motor 17 is connected to the rotating shaft of the door panel 16. Before the testing begins, the second motor 17 drives the door panel 16 to rotate downward to form a step, making it easier for poultry to walk smoothly into the testing chamber 1 from the outside, reducing the stress caused by forced herding. After the poultry enter the testing chamber 1, the second motor 17 drives the door panel 16 to rotate upward to the closed position, tightly fitting against the open end of the testing chamber 1, isolating external light and line of sight, forming a sealed testing environment, and completely eliminating human visual interference. After the testing is completed, the second motor 17 drives the door panel 16 to rotate downward again to open it, allowing the poultry to walk out.

[0025] Furthermore, an enticing trough 18 is installed on the inner wall of the testing chamber 1 away from the opening. Before testing, a small amount of highly active dry yeast powder or roasted corn crumbs can be placed in the enticing trough 18. Taking advantage of poultry's natural sensitivity to the aroma of yeast and grains, the poultry are lured to actively enter the interior of the testing chamber 1, allowing their bodies to naturally pass through the turning ring 12. The installation position of the enticing trough 18 ensures that the poultry are in the same position each time they enter the testing chamber 1, increasing the success rate of subsequent clamping and pressing operations. By using scent to entice the poultry to cooperate, the stress response caused by forced capture and driving is reduced.

[0026] It should be noted that a camera 19 is installed on the inner wall of the testing chamber 1. An infrared night vision camera can be selected. During the entire testing process, the camera 19 can capture the status of the poultry in real time and transmit the video signal to the display terminal, which facilitates clamping and pressing operations and makes it easy to record the duration of TI.

[0027] The clamping mechanism 2 includes a first telescopic cylinder 21 and a clamping assembly 22. The two first telescopic cylinders 21 are respectively installed on both sides of the turning ring 12. The telescopic shaft ends of the two first telescopic cylinders 21 face each other and are respectively equipped with clamping assemblies 22 to clamp poultry in the bin.

[0028] The pressing mechanism 3 includes a second telescopic cylinder 31, a third telescopic cylinder 32, and a pressing assembly 33. The second telescopic cylinder 31 is installed on the top of the detection chamber 1, and the third telescopic cylinder 32 is installed at the end of the detection chamber 1 away from the open end. The telescopic shaft ends of the second telescopic cylinder 31 and the third telescopic cylinder 32 both extend into the detection chamber 1 and are respectively equipped with pressing assemblies 33. The telescopic shaft end of the second telescopic cylinder 31 faces downward, and the telescopic shaft end of the third telescopic cylinder 32 faces the open end of the detection chamber 1.

[0029] Specifically, the pressing assembly 33 includes a connecting plate 331, a pressing plate 332, and a pressure sensor 333. The connecting plate 331 is connected to the corresponding telescopic shaft end and has side plates 334 installed on both sides. Miniature linear guides are installed on the opposite surfaces of the two side plates 334. The pressure sensor 333 is installed on the connecting plate 331 and connected to the control terminal. The pressure sensor 333 can be a strain gauge type cylindrical pressure sensor. The pressing plate 332 is slidably installed between the two side plates 334 in the direction close to or away from the corresponding telescopic shaft, and a first elastic element 335 is connected between it and the force-bearing surface of the pressure sensor 333. The first elastic element 335 can be a spring. When the telescopic cylinder pushes the pressing assembly 33 toward the poultry, the pressing plate 332 first contacts the poultry's body. As the telescopic cylinder continues to advance, the pressing plate 332 slides backward relative to the connecting plate 331, compressing the first elastic element 335. The pressure sensor 333 detects the elastic force of the first elastic element 335 in real time. When the elastic force reaches the preset pressure value, the telescopic cylinder can stop advancing and maintain that position, thereby ensuring that the pressing force is consistent each time, eliminating the difference in the force of manual pressing, and forming a soft contact force measuring structure to avoid hard impact causing pain and additional stress to the poultry.

[0030] The first telescopic cylinder 21, the second telescopic cylinder 31, and the third telescopic cylinder 32 can all be selected from miniature double-acting pneumatic cylinders or DC electric push rods.

[0031] In practical use, first open the open end of the detection chamber 1, place the poultry to be tested head inward into the detection chamber 1, so that the poultry's body passes through the turning ring 12, activate the two first telescopic cylinders 21, push the clamping components 22 on both sides to move towards the center, clamp the middle of the poultry's body, and drive the turning ring 12 to rotate 180 degrees through the drive component 13, so that the poultry turns from an upright position to a supine position. Then activate the second telescopic cylinder 31 and the third telescopic cylinder 32, respectively push the corresponding pressing component 33 downward and towards the chicken's head, gently press the poultry's chest, abdomen and occipital bone, and hold for 10-15 seconds to induce the TI state. After the pressing is completed, the second telescopic cylinder 31 and the third telescopic cylinder 32 drive the pressing component 33 to reset, the first telescopic cylinder 21 drives the clamping component 22 to release, and start timing until the poultry turns over and stands up on its own. This invention achieves automatic turning of poultry through the turning ring 12, replacing manual turning action and avoiding the difference in force of manual operation. The clamping mechanism 2 fixes the poultry's body to ensure the stability of the poultry's posture during the turning process and improve the success rate of induction. The two pressing components 33 correspond to the pressing needs of the chest, abdomen and head respectively, realizing standardized pressing operation. The entire detection process is carried out in the sealed detection chamber 1, which effectively isolates external light and visual interference and eliminates the influence of human factors on the detection results.

[0032] In one embodiment, the clamping assembly 22 includes a push block 221, a main clamping block 222, and side clamping blocks 223. The push block 221 is installed on the telescopic shaft end of the first telescopic cylinder 21 and has a cavity 2211 on the side facing the inside of the turning ring 12. The main clamping block 222 is slidably installed in the cavity 2211 along the direction close to or away from the center of the turning ring 12 and is connected to the inner wall of the cavity 2211 by a second elastic member 2212. The second elastic member 2212 can be a spring to provide an elastic force to eject the main clamping block 222 from the cavity 2211. Racks 2221 are respectively installed on the upper and lower sides of the main clamping block 222. Two side clamping blocks 223 are rotatably installed on the upper and lower sides of the push block 221, and the rotatable connecting end of the side clamping block 223 is equipped with a second gear 2231 that meshes with the side rack 2221 on its respective side. When the first telescopic cylinder 21 pushes the push block 221 toward the center of the turning ring 12, the main clamping block 222 first comes into contact with the side of the poultry's body. As the push block 221 continues to move, the main clamping block 222 is pressed into the cavity 2211, while the second elastic element 2212 is compressed to achieve buffering. When the main clamping block 222 moves, it drives the rack 2221 to move synchronously, and through the meshing transmission with the second gear 2231, it drives the upper and lower side clamping blocks 223 to rotate inward and come into contact with the upper and lower sides of the poultry. The main clamping block 222 first contacts and is pressed into the cavity 2211, providing a buffer in the initial stage of clamping to avoid the poultry being frightened and injured by hard impact. The movement of the main clamping block 222 synchronously drives the side clamping block 223 to rotate, realizing simultaneous clamping from multiple directions such as the side and top and bottom, which significantly improves the clamping effect. In addition, the compression amount of the second elastic element 2212 automatically changes with the size of the poultry, which can automatically adjust the clamping force and clamping range according to the size of the poultry to achieve stable clamping.

[0033] Furthermore, the main clamping block 222 fits tightly against the inner wall of the cavity 2211, and the side clamping block 223 has a receiving cavity 2232 with an open end. A tube 2233 connects the receiving cavity 2232 and the cavity 2211, and an extension block 224 is slidably installed in the receiving cavity 2232. When the main clamping block 222 is pressed into the cavity 2211, the air in the cavity 2211 is compressed, and the pressure increases. The high-pressure air enters the receiving cavity 2232 inside the side clamping block 223 through the tube 2233, pushing the extension block 224 outward from the open end of the receiving cavity 2232, further improving the clamping degree on both sides of the poultry. By automatically extending the extension block 224 during the clamping process, the clamping contact area is further increased, ensuring that the poultry will not slip during the turning process, achieving stable turning, and dispersing the clamping pressure to avoid excessive local pressure that could harm the poultry.

[0034] Preferably, one end of the extension block 224 located within the receiving cavity 2232 is provided with a piston plate 2241 that fits against the inner wall of the receiving cavity 2232. A limiting part 2234 that fits against the side wall of the extension block 224 is installed at the opening of the receiving cavity 2232. It should be noted that the size of the piston plate 2241 is larger than the size of the extension block 224. When the air pressure inside the receiving cavity 2232 increases, it pushes the piston plate 2241 and the extension block 224 outwards until the piston plate 2241 contacts the limiting part 2234, at which point the extension stops, preventing the extension block 224 from detaching.

[0035] In one embodiment, a sliding block 211 is installed on the telescopic shaft end of the first telescopic cylinder 21, and the push block 221 is slidably connected to the sliding block 211. Guide plates 15 are respectively installed on the inner side of the turning ring sleeve 12 on both sides of each clamping component 22. A guide groove 151 is opened laterally on the guide plate 15. Two branch grooves 152 that are bifurcated vertically are provided at one end of the guide groove 151 away from the center of the turning ring sleeve 12. Each branch groove 152 is smoothly connected to the guide groove 151. Sliding pins 2213 that are slidably connected to the guide groove 151 are provided on both sides of the push block 221. Initially, the push block 221 is located at the bottom of the sliding block 211 under the action of gravity, and the sliding pin 2213 is located in a branch groove 152 below the end of the guide groove 151 away from the center of the turning ring 12. When the first telescopic cylinder 21 pushes the push block 221 towards the center of the turning ring 12, the sliding pin 2213 connects from the lower branch groove 152 into the horizontal section of the guide groove 151 and slides towards the center of the turning ring 12. After the turning ring 12 rotates 180 degrees to turn the poultry over and induce the poultry into the TI state, the first telescopic cylinder 21 drives the push block 221 to move away from the center. At this time, the push block 221 causes the sliding pin 2213 to slide into the current position under the action of gravity. The lower slot 152 allows for the simultaneous release of the clamp and lowering of poultry. The pusher block 221 automatically lowers the poultry while releasing the clamp, ensuring that the poultry is placed stably at the bottom of the testing chamber 1. This avoids the poultry falling due to direct release, reducing stress. Furthermore, because the guide plate 15 has two symmetrically branched slots 152, after the turning ring 12 rotates 180 degrees, it can be directly put into the next testing test without resetting. This is particularly suitable for multiple tests on the same poultry. After one test, the poultry does not need to be removed and can be directly put into the next test, avoiding repeated resetting of the device and bumping the poultry, which would increase poultry stress and significantly improve testing efficiency and data accuracy.

[0036] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A poultry stress detection device, characterized in that, Includes a detection chamber, a clamping mechanism, and a pressing mechanism; The detection chamber has an open end and a partition area in the middle. An axially rotatable turning ring is installed in the partition area. A drive assembly for driving the turning ring to rotate is installed on the detection chamber. The clamping mechanism includes a first telescopic cylinder and a clamping assembly. The two first telescopic cylinders are respectively installed on both sides of the turning ring, and the telescopic shaft ends of the two first telescopic cylinders face each other and are respectively equipped with clamping assemblies. The pressing mechanism includes a second telescopic cylinder, a third telescopic cylinder, and a pressing assembly. The second telescopic cylinder is installed on the top of the detection chamber, and the third telescopic cylinder is installed at the end of the detection chamber away from the open end. The telescopic shaft ends of the second and third telescopic cylinders both extend into the detection chamber and are respectively equipped with pressing assemblies.

2. The poultry stress detection device according to claim 1, characterized in that, The pressing assembly includes a connecting plate, a pressure plate, and a pressure sensor. The connecting plate is connected to the corresponding telescopic shaft end and has side plates installed on both sides. The pressure sensor is installed on the connecting plate. The pressure plate is slidably installed between the two side plates in a direction close to or away from the corresponding telescopic shaft, and is connected to the pressure sensor by a first elastic element.

3. The poultry stress detection device according to claim 1, characterized in that, The outer ends of the turning ring are respectively equipped with first rotating rings, and the outer sides of the detection chamber are respectively equipped with two second rotating rings. The two second rotating rings are rotatably connected to the two first rotating rings. The drive assembly includes a first motor, a first gear and a gear ring. The gear ring is mounted around one of the first rotating rings. The first motor is mounted on the detection chamber and its output shaft end is equipped with a first gear that meshes with the gear ring.

4. The poultry stress detection device according to claim 1, characterized in that, The clamping assembly includes a push block, a main clamping block, and side clamping blocks. The push block is installed on the telescopic shaft end of the first telescopic cylinder and has a cavity on the side facing the inside of the turning ring. The main clamping block is slidably installed in the cavity and connected to the inner wall of the cavity by a second elastic element. Racks are installed on the upper and lower sides of the main clamping block respectively. The two side clamping blocks are rotatably installed on the upper and lower sides of the push block respectively, and the rotatable connecting end of the side clamping block is equipped with a second gear that meshes with the rack on its side.

5. The poultry stress detection device according to claim 4, characterized in that, The main clamping block fits tightly against the inner wall of the cavity. The side clamping block has a receiving cavity inside and is open at the far end. A tube connects the receiving cavity to the cavity. An extension block is slidably installed in the receiving cavity.

6. The poultry stress detection device according to claim 5, characterized in that, The extension block is provided with a piston plate at one end inside the storage cavity, which fits against the inner wall of the storage cavity, and a limiting part is installed at the opening of the storage cavity, which fits against the side wall of the extension block.

7. A poultry stress detection device according to claim 4, characterized in that, The first telescopic cylinder has a sliding block installed on its telescopic shaft end. The push block is slidably connected to the sliding block. The inner side of the turning ring is equipped with guide plates on both sides of each clamping component. The guide plates have guide grooves opened laterally. The end of the guide groove away from the center of the turning ring is provided with two branching grooves. The push block has sliding pins on both sides that are slidably connected to the guide grooves.

8. The poultry stress detection device according to claim 1, characterized in that, A door panel is rotatably mounted on the lower side of the opening of the testing chamber, and a second motor is installed on the testing chamber. The output shaft of the second motor is connected to the rotating shaft of the door panel.

9. A poultry stress detection device according to claim 1, characterized in that, The detection chamber has a feeding trough installed on the inner wall away from the opening.

10. A poultry stress detection device according to claim 1, characterized in that, The inner wall of the testing chamber is equipped with a camera.

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