A high-quality breeding device and breeding method for breeding pigs

Abstract

The present invention relates to a high-quality breeding device and breeding method for breeding pigs, including a support platform, characterized in that: a lifting device is arranged on the support platform, and the lifting device includes a sliding seat, a first electric push rod, a support tray located above the sliding seat, a pair of support rods symmetrically arranged on both sides of the support tray, and a pair of second electric push rods symmetrically arranged on both sides of the support tray and in front of the support rods. A first pressure sensor is installed at the top of the rear end of the support tray, and a second pressure sensor is installed at the top of the leg support. For this breeding device, when it is detected that the boar is physically exhausted, the support tray can move backward relative to the center of gravity of the boar's body, so that more weight of the boar's body is distributed on the support tray, that is, more weight is borne by the boar's chest, and less weight is borne by the boar's front legs, which can relieve the burden on the front legs and effectively reduce the situation where the smooth progress of breeding is affected due to insufficient strength of the front legs, and improve the success rate of continuous breeding.

Description

Technical Field

[0001] The present invention relates to, and specifically relates to a high-quality breeding device and breeding method for breeding pigs. Background Art

[0002] With the development of the economy and the progress of society, the demand for pork by people is increasing. The traditional "small and scattered" pig breeding method can no longer meet the huge market demand for pork.

[0003] At the present stage, large-scale centralized pig breeding has been very mature. An important part of centralized breeding is breeding, that is, mating of boars and sows.

[0004] When breeding pigs, boars and sows with better physical constitutions are selected. Then the sows are guided into a relatively narrow passage, and then the boars are allowed to lie on the backs of the sows to complete the breeding process.

[0005] In this breeding method, the sows are easily affected by excessive back pressure and their emotions fluctuate, resulting in random collisions of their bodies, which affects the breeding effect.

[0006] To avoid the above problems, currently in the industry, auxiliary support frames are beginning to be used. During breeding, the sows are guided under the auxiliary support frames, and then the boars are allowed to lie on the auxiliary support frames. The front legs of the boars are supported by leg supports on both sides of the auxiliary support frames, so as to reduce the pressure borne by the sows.

[0007] This kind of auxiliary support frame mainly supports the front legs of the boars through leg supports to bear the weight of the boars. During continuous breeding operations, the boars maintain the same posture for a long time, and the front legs are under great pressure, easily resulting in the situation that the front legs are unable to support the weight and affecting the smooth progress of breeding, which needs to be improved. Summary of the Invention

[0008] Based on the above description, the present invention provides a high-quality breeding device and breeding method for breeding pigs to solve the problem that the existing auxiliary support frames are prone to the situation that the front legs of the boars are unable to support the weight during continuous breeding, which affects the smooth breeding.

[0009] The technical solution of the present invention to solve the above technical problems is as follows:

[0010] A high-quality breeding device for breeding pigs, including a support platform, on which a lifting device is arranged. A rear guardrail is arranged behind the lifting device, and a front guardrail is arranged in front of the lifting device. The lifting device includes a sliding seat, a first electric push rod, a support tray located above the sliding seat, a pair of support rods symmetrically arranged on both sides of the support tray, and a pair of second electric push rods symmetrically arranged on both sides of the support tray and in front of the support rods. The sliding seat is slidably connected to the support platform. Two ends of the first electric push rod are respectively connected to the support platform and the sliding seat. The lower ends of the support rods are fixedly connected to the sliding seat, and the upper ends thereof are hinged to the side portions of the support tray. The lower ends of the second electric push rods are fixedly connected to the sliding seat, and the upper ends thereof are hinged to the side portions of the support tray. A first pressure sensor is installed at the top of the rear end of the support tray. Leg supports for supporting the front legs of the boar are symmetrically arranged on both sides of the support tray, and a second pressure sensor is installed at the top of the leg support. The breeding device further includes a controller for controlling the first electric push rod and the second electric push rod. Signal output ends of the first pressure sensor and the second pressure sensor are connected to signal sampling input ends of the main control module.

[0011] As a preferred solution: During the breeding process, the controller compares the pressure values detected by the first pressure sensor twice before and after, and compares the pressure values detected by the second pressure sensor twice before and after. When the increase amplitude of the detection value of the first pressure sensor is greater than a first preset value, and the decrease amplitude of the detection value of the second pressure sensor is greater than a second preset value, the controller controls the first electric push rod to drive the support tray to slide backward by a certain distance, and at the same time, the controller controls the second electric push rod to drive the support tray to swing upward by a certain angle.

[0012] As a preferred solution: The breeding device further includes walking guardrails symmetrically installed on both sides of the support platform. A walking passage for the boar is located between the walking guardrails. The walking passage is behind the support device. An electric gate controlled by the controller is installed between the walking passage and the rear guardrail. A camera module is arranged above the walking passage. The camera module is used to take pictures of the boar in the walking passage. The camera module is connected to the controller. A first weighing module and a second weighing module are installed in the walking passage. The first weighing module is used to detect the pressure of the boar's hind feet on the ground, and the second weighing module is used to detect the pressure of the boar's front feet on the ground. The first weighing module and the second weighing module are connected to the controller.

[0013] As a preferred solution: The controller processes the pictures taken by the camera module to obtain the body length L of the boar, and based on the body length L of the boar, the body weight M borne by the front feet and the weight N borne by the hind feet, according to the formula α = |M - N| / L to determine the body weight distribution law of the boar, matches the moving amount of the support tray sliding backward according to the value of α, and then controls the first electric push rod to drive the support tray to move backward by this moving amount.

[0014] As a preferred solution: the processing of the screen specifically refers to binarizing the image data to obtain a grayscale image, so as to obtain a clear outline of the boar's body; then dividing the grayscale image into a grid, and calculating the proportional relationship between the body length of the boar and the length of the image screen according to the number of grids occupied by the grayscale boar in the length direction of the image and the total number of grids in the length direction of the image; finally, calculating the actual body length L of the boar according to the actual length of the shooting range of the image screen.

[0015] As a preferred solution: the breeding device further includes a width adjusting device for adjusting the width of the channel. The width adjusting device includes a movable beam arranged below the walking guardrail. The movable beam is arranged along the length direction of the support platform. At least two groups of through holes are opened on the movable beam. Guide columns are arranged at the side parts of the support platform corresponding to the through holes. The guide columns are arranged along the width direction of the support platform. The ends of the guide columns are fixedly connected to the side parts of the support platform. The guide columns are inserted into the through holes. A third electric push rod controlled by a controller is arranged outside the movable beam. The third electric push rod is arranged along the width direction of the support platform. One end of the third electric push rod is fixedly connected to the support platform through a connecting plate. The other end of the third electric push rod is fixedly connected to the movable beam. An installation plate is also fixed on the walking guardrail, and a third pressure sensor is installed on the side of the installation plate facing the walking channel. The third pressure sensor is connected to the controller.

[0016] A high-quality breeding method for breeding pigs, applicable to the breeding device: during the breeding process, continuously detect the pressure between the boar's chest and the top of the rear end of the support tray and the pressure between the boar's front legs and the leg support. When the increase amplitude of the previous pressure value is greater than the first preset value and the decrease amplitude of the latter pressure value is greater than the second preset value, control the support tray to move backward by a certain distance and control the support tray to swing upward by a certain angle.

[0017] As a preferred solution: it further includes a step of adjusting the moving distance of the support tray, that is, obtaining the weight distribution law of the boar according to the body length of the boar, the pressure of the front feet on the ground and the pressure of the rear feet on the ground, and matching the corresponding moving distance value of the support tray according to its weight distribution law.

[0018] Compared with the prior art, the technical solution of the present application has the following beneficial technical effects: for this breeding device, when it is detected that the boar is physically exhausted, the support tray can move backward relative to the center of gravity of the boar's body, so that more weight of the boar's weight is distributed on the support tray, that is, the chest of the boar bears more weight, and the front legs of the boar bear less weight, which can relieve the burden on the front legs and effectively reduce the situation that the smooth progress of breeding is affected due to the lack of strength of the front legs, and improve the success rate of continuous breeding. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the breeding device in Embodiment 1;

[0020] Figure 2 It is a side view of the width adjustment device in Embodiment 1;

[0021] Figure 3 It is a front view of the width adjustment device in Embodiment 1;

[0022] Figure 4 It is Figure 3 an enlarged view of part A in

[0023] Figure 5 It is a schematic diagram of the structure of the support pallet in Embodiment 1;

[0024] Figure 6 It is a circuit principle block diagram of Embodiment 1.

[0025] In the drawings, the list of components represented by each reference numeral is as follows:

[0026] 1. Support platform; 2. Width adjustment device; 201. Movable beam; 202. Through hole; 203. Guide post; 204. Third electric push rod; 205. Connecting plate; 206. Walking guardrail; 3. Electric gate; 4. Lifting device; 401. Sliding seat; 402. First electric push rod; 403. Support rod; 404. Second electric push rod; 405. Support pallet; 406. Leg support; 5. Front guardrail; 6. Rear guardrail; 7. Camera module; 8. Bracket; 9. First weighing module; 10. Second weighing module; 11. Mounting plate; 12. Third pressure sensor; 13. First pressure sensor; 14. Second pressure sensor. Detailed implementation manners

[0027] Embodiment 1:

[0028] Referring to Figure 1 and Figure 5 , a high-quality breeding device for breeding pigs includes a support platform 1, a lifting device 4 is arranged on the support platform 1, a rear guardrail 6 is arranged behind the lifting device 4, and a front guardrail 5 is arranged in front of the lifting device 4. The front guardrail 5 and the rear guardrail 6 can restrict boars and sows in the breeding area.

[0029] The lifting device 4 includes a sliding seat 401, a first electric push rod 402, a support pallet 405 located above the sliding seat 401, a pair of support rods 403 symmetrically arranged on both sides of the support pallet 405, and a pair of second electric push rods 404 symmetrically arranged on both sides of the support pallet 405 and in front of the support rods 403. The sliding seat 401 is slidably connected to the support platform 1, so that the sliding seat 401 can slide back and forth along the length direction of the support platform 1. Both ends of the first electric push rod 402 are connected to the support platform 1 and the sliding seat 401 respectively. When the first electric push rod 402 expands and contracts, it can drive the sliding seat 401 to slide forward and backward (the "front and back" direction is the length direction of the support platform 1); the support rods 403 are arranged vertically, the lower end of the support rod 403 is fixedly connected to the sliding seat 401, and the upper end of the support rod 403 is hinged to the side of the support pallet 405; the second electric push rod 404 is arranged vertically, the lower end of the second electric push rod 404 is fixedly connected to the sliding seat 401, and the upper end of the second electric push rod 404 is hinged to the side of the support pallet 405.

[0030] In the initial state, the sliding seat 401 is located at its foremost position, and both the first electric push rod 402 and the second electric push rod 404 are in the shortest state. In this state, the front end of the support pallet 405 is higher than its rear end, making the support pallet 405 inclined. When the second electric push rod 404 expands and contracts, it can drive the support pallet 405 to swing, thereby adjusting the inclination angle of the support pallet 405.

[0031] A first pressure sensor 13 is installed at the top of the rear end of the support pallet 405. Leg supports 406 for supporting the front legs of the boar are symmetrically arranged on both sides of the support pallet 405, and a second pressure sensor 14 is installed at the top of the leg support 406.

[0032] This breeding device also includes a controller. Refer to Figure 6 , the controller includes a main control module and a power module. The main control module is used to control the first electric push rod 402 and the second electric push rod 404. The signal output ends of the first pressure sensor 13 and the second pressure sensor 14 are connected to the signal sampling input end of the main control module. The driving ends of the first electric push rod 402 and the second electric push rod 404 are connected to the driving signal output end of the main control module. The power module is used to supply power to the pressure sensors and the controller.

[0033] The working principle of this breeding device is as follows:

[0034] In the initial state of the support device, the sow stands directly below the support pallet 405. The boar is driven to the support device, and the upper half of the boar lies on the support pallet 405. The front legs of the boar are placed on the leg supports 406. At this time, the chest part of the boar is supported by the support pallet 405, and the front legs of the boar are supported by the leg supports 406.

[0035] During the breeding process, the front legs of the boar will bear a relatively large weight. After maintaining the above posture for a long time, due to excessive physical exertion, the front legs may become weak, resulting in a reduced supporting force of the front legs on the body, and the weight of the body will be more concentrated on the contact part between the chest cavity and the supporting plate 405, especially the part in contact with the rear end of the supporting plate 405.

[0036] During the breeding process, the first pressure sensor 13 can detect the pressure of the boar's chest cavity on the supporting plate 405 and feedback the pressure detection value to the main control module; the second pressure sensor 14 can detect the pressure of the boar's front legs on the leg support 406 and feedback the pressure detection value to the main control module. The main control module compares the pressure values detected by the first pressure sensor 13 twice before and after, and compares the pressure values detected by the second pressure sensor 14 twice before and after. When the increase amplitude of the detection value of the first pressure sensor 13 is greater than the first preset value, and the decrease amplitude of the detection value of the second pressure sensor 14 is greater than the second preset value, the main control module determines that the boar is out of strength at this time. At this time, the main control module controls the first electric push rod 402 to extend, thereby driving the sliding seat 401 to slide backward for a certain distance. At the same time, the main control module controls the second electric push rod 404 to extend, thereby driving the supporting plate 405 to swing upward by a certain angle, ensuring that the supporting plate 405 can still fit well with the boar's chest cavity after moving. At this time, the supporting plate 405 can move backward relative to the boar's body center of gravity, so that more weight of the boar's body is distributed on the supporting plate 405, that is, the boar's chest cavity bears more weight, and the boar's front legs bear less weight, which can relieve the burden on the front legs and effectively reduce the situation that the smooth progress of breeding is affected by the lack of strength of the front legs, and improve the success rate of continuous breeding.

[0037] The breeding device in this embodiment further includes walking guardrails 206 symmetrically installed on both sides of the support platform 1. The walking channel for the boar is between the walking guardrails 206, and the walking channel is located behind the support device. An electric gate 3 is installed between the walking channel and the rear guardrail 6, and the electric gate 3 is used to open and close the walking channel.

[0038] A camera module 7 is provided above the walking channel. The camera module 7 is fixedly connected to the electric gate 3 through a bracket 8. A first weighing module 9 and a second weighing module 10 are installed in the walking channel. The first weighing module 9 is located behind the second weighing module 10. The first weighing module 9 is used to detect the pressure of the boar's hind feet on the ground, and the second weighing module 10 is used to detect the pressure of the boar's front feet on the ground. Both the first weighing module 9 and the second weighing module 10 are within the shooting range of the camera module 7.

[0039] By adjusting the position of the electric gate 3 and the distance between the first weighing module 9 and the second weighing module 10, when the boar walks to the electric gate 3, its hind feet just stand on the first weighing module 9, and its front feet just stand on the second weighing module 10.

[0040] As Figure 6 shown, the controller further includes a storage module.

[0041] The output end of the camera module 7 is connected to the input end of the main control module; the storage module is connected to the read-write end of the main control module; the output ends of the first weighing module 9 and the second weighing module 10 are connected to the sampling signal input end of the main control module; the driving end of the gate motor of the electric gate 3 is connected to the driving signal output end of the main control module.

[0042] For boars of different body types, their body weight distributions are different. In this embodiment, the body weight distribution law is determined by the body length of the boar, the body weight borne by the front feet, and the body weight borne by the hind feet.

[0043] For example, if the body length of the boar is L cm, the weight borne by the front feet is M Newtons, and the weight borne by the hind feet is N Newtons, then its weight distribution law can be simply summarized as α = |M - N| / L, with the unit of Newton / cm, that is, the absolute value of the difference between M and N divided by L.

[0044] For boars of different body types, during their breeding process, when their physical strength is insufficient, the backward adjustment displacement of the support plate 405 under them should also be determined according to their weight distribution law. The backward adjustment displacement is defined as X. In this embodiment, α and X can be put into one-to-one correspondence to obtain a correspondence table between the two, and the correspondence table is stored in the storage module.

[0045] During the actual breeding process, the main control module controls the electric gate plate to close. When the boar walks in the walking passage to the electric gate 3 and stops, at this time, the first weighing module 9 and the second weighing module 10 respectively detect the pressures N and M of the boar's hind feet and front feet on the ground, and feedback the pressure detection results N and M to the main control module; after receiving the pressure detection results of the first weighing module 9 and the second weighing module 10, the main control module controls the camera module 7 to take an image, and this image is taken from the perspective above the boar; the image data is transmitted to the main control module, and the image processing unit built in the main control module processes the image data.

[0046] The specific processing steps are as follows:

[0047] The image processing unit binarizes the image data to obtain a grayscale image, so as to obtain a clear outline of the boar's body; then the grayscale image is divided into grids, and the proportional relationship between the body length of the boar and the length of the image screen is calculated according to the number of grids occupied by the grayscale boar in the length direction of the image and the total number of grids in the length direction of the image; finally, the actual body length L of the boar is calculated according to the actual length of the image screen shooting range (it is necessary to measure the length and width of the screen shooting range on site in advance and store the measured results in the storage module).

[0048] The main control module substitutes the obtained L, M, and N into the body weight distribution formula α = |M - N| / L for calculation to obtain the α value of the boar. Then the main control module reads the comparison table of α and X, and obtains the value of the backward adjustment displacement X according to the value of α.

[0049] Subsequently, the main control module controls the electric gate 3 to open, so that the boar can enter the area where the support device is located. During the breeding process of the boar, when it is judged that the boar is physically exhausted, the main control module controls the first electric push rod 402 to drive the sliding seat 401 (that is, to drive the support tray 405) to move backward by a distance X, and at the same time controls the second electric push rod 404 to drive the support tray 405 to swing upward by a certain angle.

[0050] Through the above measures, the support device can adaptively adjust the displacement of the support tray 405 according to the body types of different boars, so as to achieve better support and pressure relief for boars of different body types.

[0051] Refer to Figure 2 、 Figure 3 and Figure 4 In this embodiment, the breeding device further includes a width adjustment device 2 for adjusting the width of the passage. The width adjustment device 2 includes a movable beam 201 arranged below the walking guardrail 206. The movable beam 201 is arranged along the length direction of the support platform 1. At least two groups of through holes 202 are provided on the movable beam 201. Guide columns 203 are arranged on the side part of the support platform 1 corresponding to the through holes 202. The guide columns 203 are arranged along the width direction of the support platform 1. The ends of the guide columns 203 are fixedly connected to the side part of the support platform 1. The guide columns 203 are inserted into the through holes 202, so that the movable beam 201 can move back and forth along the length direction of the guide columns 203. A third electric push rod 204 is arranged outside the movable beam 201. The third electric push rod 204 is arranged along the width direction of the support platform 1. One end of the third electric push rod 204 is fixedly connected to the support platform 1 through a connecting plate 205, and the other end of the third electric push rod 204 is fixedly connected to the movable beam 201. The driving end of the third electric push rod 204 is connected to the driving signal output end of the main control module.

[0052] An installation plate 11 is also fixed on the walking guardrail 206, and a third pressure sensor 12 is installed on the side of the installation plate 11 facing the walking passage. The signal output end of the third pressure sensor 12 is connected to the sampling signal input end of the main control module.

[0053] In the initial state, the walking guardrail 206 is farthest from the center of the walking passage, and at this time, the width of the walking passage is the widest.

[0054] During the process of weighing the boar, when the main control module receives the detection signal from the weighing module, the main control module controls the third electric push rod 204 to drive the walking guardrail 206 to move towards the center of the walking passage. When the third pressure sensor 12 comes into contact with the side of the boar, it starts to feedback the pressure value to the main control module. When the pressure value reaches a certain value, the main control module controls the third electric push rod 204 to stop, and at this time, the boar is clamped. In this state, since the boar is clamped to a certain extent, the body of the boar can be effectively restricted without harming the boar, preventing it from walking or wriggling and causing a large error in the detection result of the weighing module.

[0055] As Figure 6 shown, the controller in this embodiment further includes a communication module connected to the main control module. The communication module is used for the communication between the controller and the upper computer or the cloud.

[0056] Embodiment 2:

[0057] A high-quality breeding method for breeding pigs, applicable to the breeding device in Embodiment 1, specifically: during the breeding process, continuously detect the pressure between the chest of the boar and the top of the rear end of the support tray and the pressure between the front legs of the boar and the leg support. When the increase amplitude of the previous pressure value is greater than the first preset value and the decrease amplitude of the latter pressure value is greater than the second preset value, control the support tray to move backward by a certain distance and control the support tray to swing upward by a certain angle.

[0058] In this embodiment, it further includes a step of adjusting the moving distance of the support tray, specifically: obtain the weight distribution law of the boar according to the body length of the boar, the pressure of the front feet on the ground, and the pressure of the rear feet on the ground, and match the corresponding moving distance value of the support tray according to its weight distribution law.

[0059] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A high-quality breeding device for breeding pigs, comprising a support platform, characterized in that: A lifting device is arranged on the support platform. A rear guardrail is arranged behind the lifting device, and a front guardrail is arranged in front of the lifting device. The lifting device includes a sliding seat, a first electric push rod, a support tray located above the sliding seat, a pair of support rods symmetrically arranged on both sides of the support tray, and a pair of second electric push rods symmetrically arranged on both sides of the support tray and in front of the support rods. The sliding seat is slidably connected to the support platform. Two ends of the first electric push rod are respectively connected to the support platform and the sliding seat. The lower ends of the support rods are fixedly connected to the sliding seat, and the upper ends thereof are hinged to the side portions of the support tray. The lower ends of the second electric push rods are fixedly connected to the sliding seat, and the upper ends thereof are hinged to the side portions of the support tray. A first pressure sensor is installed at the top of the rear end of the support tray. Leg supports for supporting the front legs of the boar are symmetrically arranged on both sides of the support tray. A second pressure sensor is installed at the top of the leg support. The breeding device further includes a controller for controlling the first electric push rod and the second electric push rod. Signal output ends of the first pressure sensor and the second pressure sensor are connected to signal sampling input ends of the main control module.

2. The high-quality breeding device for breeding pigs according to claim 1, characterized in that: During the breeding process, the controller compares the pressure values detected by the first pressure sensor twice and compares the pressure values detected by the second pressure sensor twice. When the increase amplitude of the detection value of the first pressure sensor is greater than a first preset value and the decrease amplitude of the detection value of the second pressure sensor is greater than a second preset value, the controller controls the first electric push rod to drive the support tray to slide backward by a certain distance, and at the same time, the controller controls the second electric push rod to drive the support tray to swing upward by a certain angle.

3. The high-quality breeding device for breeding pigs according to claim 1, characterized in that: The breeding device further includes walking guardrails symmetrically installed on both sides of the support platform. A walking passage for the boar is provided between the walking guardrails. The walking passage is located behind the support device. An electric gate controlled by the controller is installed between the walking passage and the rear guardrail. A camera module is arranged above the walking passage. The camera module is used for taking pictures of the boar in the walking passage. The camera module is connected to the controller. A first weighing module and a second weighing module are installed in the walking passage. The first weighing module is used for detecting the pressure of the boar's hind feet on the ground, and the second weighing module is used for detecting the pressure of the boar's front feet on the ground. The first weighing module and the second weighing module are connected to the controller.

4. The high-quality breeding device for breeding pigs according to claim 3, characterized in that: The controller processes the picture taken by the camera module to obtain the body length L of the boar, and according to the body length L of the boar, the body weight M borne by the front feet and the weight N borne by the hind feet, determines the body weight distribution law of the boar according to the formula α = |M - N| / L, matches the moving amount of the backward sliding of the support tray according to the value of α, and then controls the first electric push rod to drive the support tray to move backward by this moving amount.

5. The high-quality breeding device for breeding pigs according to claim 4, characterized in that: The processing of the said screen specifically involves binarizing the image data to obtain a grayscale image, so as to obtain a clear contour of the boar's body; then dividing the grayscale image into grids, and calculating the proportional relationship between the body length of the boar and the length of the image screen according to the number of grids occupied by the grayscale boar in the length direction of the image and the total number of grids in the length direction of the image; finally, calculating the actual body length L of the boar according to the actual length of the shooting range of the image screen.

6. The high-quality breeding device for breeding pigs according to claim 3, characterized in that: The breeding device further includes a width adjustment device for adjusting the width of the passage. The width adjustment device includes a movable beam arranged under the walking guardrail. The movable beam is arranged along the length direction of the support platform. At least two groups of through holes are formed in the movable beam. Guide columns are arranged at the side parts of the support platform corresponding to the through holes. The guide columns are arranged along the width direction of the support platform. The ends of the guide columns are fixedly connected to the side parts of the support platform. The guide columns are inserted into the through holes. A third electric push rod controlled by a controller is arranged outside the movable beam. The third electric push rod is arranged along the width direction of the support platform. One end of the third electric push rod is fixedly connected to the support platform through a connecting plate. The other end of the third electric push rod is fixedly connected to the movable beam. An installation plate is also fixed on the walking guardrail, and a third pressure sensor is installed on the side of the installation plate facing the walking passage. The third pressure sensor is connected to the controller.

7. A breeding method for high-quality breeding pigs, applicable to the breeding device described in claim 1, characterized in that: During the breeding process, by continuously detecting the pressure between the boar's chest and the top of the rear end of the support tray and the pressure between the boar's front legs and the leg support, when the increase amplitude of the previous pressure value is greater than the first preset value and the decrease amplitude of the latter pressure value is greater than the second preset value, control the support tray to move backward by a certain distance and control the support tray to swing upward by a certain angle.

8. The high-quality breeding method for breeding pigs according to claim 7, characterized in that: It also includes the step of adjusting the moving distance of the support tray, that is, obtaining the weight distribution law of the boar according to the body length of the boar, the pressure of the front feet on the ground and the pressure of the rear feet on the ground, and matching the corresponding moving distance value of the support tray according to its weight distribution law.

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