A device for estrus induction in sows

Abstract

The present invention relates to the technical field of estrus induction for sows, and particularly relates to a device for estrus induction of sows, which includes a bottom plate. A traveling mechanism is provided below the bottom plate, and a limiting fence is provided above the bottom plate. Activity doors are provided at the front end and the rear end of the limiting fence. Rope boxes are provided on both sides of the limiting fence. A limiting box is fixed at the rear side of the rope box, and a guiding mechanism is fixed at the tail end of the side surface of the limiting fence. The present invention can improve the enthusiasm of boars, allow the front body of the boar to extend out of the limiting fence, further stimulate its own sexual desire, improve the utilization efficiency of boars, improve the contact and stimulation method between boars and sows, avoid the situation where a boar with a too large body size or limb disability but good sexual desire cannot induce estrus in sows, and improve the estrus induction efficiency.

Description

Technical Field:

[0002] The present invention relates to the technical field of estrus induction for sows, and particularly to a device for estrus induction of sows. Background Art:

[0004] In the pig-raising industry, sows are the basis of pig production. In pig production, in order to maintain good economic benefits and the good reproductive performance of sows, it is necessary to continuously update sows. At present, the annual replacement rate of replacement sows is as high as 40 - 50%. The proportion of sows that are eliminated due to the failure to initiate the estrus period after weaning accounts for 30 - 40%. 50% of sows are eliminated after only providing 30 - 40 weaned piglets throughout their lives. Therefore, how to induce and improve the estrus efficiency of sows is an important problem that producers urgently need to solve. At present, there are two main methods for inducing estrus in sows. One is to use boars to induce estrus twice a day for 5 - 10 minutes each time for weaned sows kept in gestation stalls or replacement sows kept in group pens. The other is to group weaned sows, which is beneficial for contact between different individuals, and even fighting and mounting each other, thus producing a certain estrus induction effect. Usually, the estrus induction and estrus inspection boars are required to have strong sexual desire, high energy, concentrated attention, and rich saliva secretion. However, in actual production, some pig farms use eliminated old boars for estrus induction and estrus inspection. Their actions are slow and their sexual desire is low, and it is often difficult to achieve an ideal estrus induction effect. Secondly, the fact that the body size of the estrus induction boar is too large leads to insufficient contact stimulation with sows and insufficient movement of sows will also affect the estrus induction of sows. Summary of the Invention:

[0006] Aiming at the problem that in the process of inducing estrus in sows, the traditional estrus induction method results in poor estrus induction effect of boars, and the fact that boars with too large body size or disabled limbs but good sexual desire cannot have sufficient contact stimulation with sows will affect the estrus induction effect of sows, the present invention provides a device for estrus induction of sows, which increases the number of estrus induction boars, can improve the enthusiasm of boars, allows the front body of the boar to extend out of the gestation stall, further stimulates its own sexual desire. And facts have also proved that boars that cannot extend out of the gestation stall do not have strong sexual desire, while allowing boars to extend out of the gestation stall can improve the sexual desire of boars, improve the utilization efficiency of boars, improve the contact stimulation method between boars and sows, avoid the situation where boars with too large body size or disabled limbs but good sexual desire cannot induce estrus in sows, and improve the estrus induction efficiency.

[0007] The solution adopted by the present invention to solve its technical problems is as follows: A device for estrus induction of sows includes a bottom plate, a traveling mechanism is provided below the bottom plate, and further includes a limit bar, a rope box, a fixed snap ring, a limit box, a torsion hinge, a roller assembly, a connecting member, and a spraying system. The limit bar is fixedly arranged above the bottom plate. Left and right front doors are symmetrically arranged at the front end of the limit bar. The left and right front doors are connected and fixed to the limit bar through a torsion hinge. The connecting member is arranged between the left and right front doors. A rear door is provided at the rear end of the limit bar. The rope box is arranged on both sides of the limit bar, and a first through hole is opened at the rear end of the rope box. The fixed snap ring is sleeved on the outer peripheral side of the rope box, and both ends of the fixed snap ring are fixed on the limit bar. The rope box includes a torsion shaft, a volute spring, and a limit rope. The torsion shaft is rotatably sleeved and fixed in the rope box. The volute spring is arranged at the top end of the torsion shaft. The inner end of the volute spring is fixedly embedded in the torsion shaft, and the outer end is embedded in the inner wall of the rope box. The limit rope is spirally wound on the torsion shaft, and the inner end of the limit rope is connected and fixed to the torsion shaft. A limit block is fixed on the limit rope. A groove corresponding to the limit block is opened on the torsion shaft, and the limit block is fitted and sleeved in the groove. The limit box is fixed on the limit bar behind the rope box, and third through holes are opened at the front and rear ends of the limit box. The limit box includes a fixed seat and a sliding plate. The fixed seats are symmetrically fixed up and down in the limit box. The sliding plate is slidably sleeved in the fixed seat, and a second through hole is horizontally penetrated on the sliding plate. The roller assembly includes a roller frame and a roller. The roller frame is vertically fixed at the side rear end of the limit bar. The roller is fitted and sleeved in the roller frame. The outer end of the limit rope passes through the second through hole and extends out of the limit box and is wound around the roller into the limit bar. The spraying system is arranged above the limit bar.

[0008] Further, the traveling assembly is a self-locking universal wheel. The self-locking universal wheel includes a fixed seat, a rotating seat, a wheel frame, and a wheel. The fixed seat is fixed at the bottom of the bottom plate. The rotating seat is rotatably fixed at the bottom of the fixed seat. The wheel frame is fixed on the rotating seat. The wheel is sleeved in the wheel frame. A locking stop block is arranged on the wheel frame.

[0009] Further, the bottom plate is composed of a plurality of bases. The bases are detachable. The bases are connected and fixed to each other. The bottom of the limit bar is fixed to the base through a catch lock. A retaining platform is fixed above the front end of the base.

[0010] Further, the connecting member is a bolt or a buckle.

[0011] Further, it further includes a feeding trough and a drinking trough. The feeding trough is fixed on the left front door. The drinking trough is fixed on the left front door on one side of the feeding trough.

[0012] Further, the spraying system includes a bracket and nozzles. The bottom end of the bracket is fixed to the top end of the limiting fence. The nozzles are multiple and are vertically and evenly fixed below the bracket. The nozzles are connected to a water source through a water delivery pipe.

[0013] Further, the rope box, the limiting box and the roller frame are fixed to the upper part of the side of the limiting fence, and the rope box, the limiting box and the roller frame are on the same horizontal line.

[0014] Further, the diameter of the limiting block is greater than the aperture of the second through hole.

[0015] Further, one end side of the rear door is connected to the limiting fence through a torsion hinge.

[0016] Further, the sliding plate is vertically and slidably sleeved between the symmetrically arranged upper and lower fixed card seats, and there is a sliding space between the sliding plate and the fixed card seats.

[0017] Advantages of the present invention: The present invention has five advantages.

[0018] First, the structure is unique and easy to use. By means of the limiting fence, the number of teaser boars is increased. Boars that are too large in size or have limb disabilities but have good libido can be placed therein, avoiding the situation where boars cannot arouse the estrus of sows due to their large size or limb disabilities, improving the utilization efficiency of excellent boars, and at the same time improving the contact effect between boars and sows, enabling the boars to stimulate the sows in place, and improving the estrus induction efficiency.

[0019] Second, the enthusiasm of the boars is improved. After the boars enter the limiting fence, as a matter of fact, the sexual desires of the boars that cannot get out of the limiting fence are not strong, and the estrus induction effect will become worse. However, under the action of the limiting rope and the movable door, the front body of the boar can be allowed to get out of the limiting fence, and the rear body will not break away from the limiting fence, enabling the boars to participate in the estrus induction and flirting with the sows without participating in mating; and allowing the boars to leave the pen can further stimulate the sexual desires of the boars themselves and improve the estrus induction effect of the boars.

[0020] Third, through this device, multiple boars can induce the estrus of group sows or individual sows. The sows are driven into a new environment, and multiple boars induce the estrus of group sows or individual sows. And under the action of the limiting fence, the situation of fighting between boars can also be avoided, changing the way of stimulating the sows. And when the sows enter a new environment, it has an obvious promoting effect on the reproductive hormones in the sows' bodies, which is beneficial to the estrus and estrus detection of the sows.

[0021] Fourth, the import positions of each limiting fence are opposite, so the heads of the boars in each limiting fence will face different positions. When inducing estrus in sows, two or more boars can be driven into the limiting fence and then moved into the sow group for induction. Since the heads of each boar face different positions, the number of induced sows is increased, the workload of the staff during estrus inspection is reduced, the work efficiency of the staff is improved, and the labor cost is also reduced.

[0022] Fifth, under the action of the spraying system, the boars in the limiting fence can be cooled in hot summer, avoiding the situation that the libido of the boars is low due to the hot weather, improving the libido of the boars, and thus being conducive to improving the estrus efficiency of sows. Brief Description of the Drawings:

[0024] Figure 1 One of the structural schematic diagrams of the present invention.

[0025] Figure 2 Two of the structural schematic diagrams of the present invention.

[0026] Figure 3 Three of the structural schematic diagrams of the present invention.

[0027] Figure 4 One of the structural schematic diagrams of the rope box.

[0028] Figure 5 Two of the structural schematic diagrams of the rope box.

[0029] Figure 6 The top view of the rope box of the present invention.

[0030] Figure 7 The structural schematic diagram of the limiting box.

[0031] Figure 8 The schematic diagram of the usage state of the limiting box.

[0032] Figure 9 One of the other structural schematic diagrams of the present invention.

[0033] Figure 10 Two of the other structural schematic diagrams of the present invention.

[0034] Figure 11 Three of the other structural schematic diagrams of the present invention.

[0035] In the figure: 1 - Rope box, 2 - Fixed snap ring, 3 - Limit bar, 4 - Twisting hinge, 5 - Base, 6 - Limit box, 7 - Limit rope, 8 - Roller frame, 9 - V-shaped roller, 10 - Fixed seat, 11 - Rotating seat, 12 - Wheel frame, 13 - Wheel, 14 - First bolt, 15 - Second bolt, 16 - Left front door, 17 - Right front door, 18 - Rear door, 19 - Volute spring, 20 - Twisting shaft, 21 - Limit block, 22 - First through hole, 23 - Rectangular groove, 24 - Fixed card seat, 25 - Sliding plate, 26 - Second through hole, 27 - Third through hole, 28 - Feeding trough, 29 - Drinking trough, 30 - Bracket, 31 - Sprinkler head. Detailed implementation method:

[0037] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0038] In Example 1, during the process of estrus induction for sows, the traditional estrus induction method is to drive a boar into the sow group for estrus induction. The estrus induction effect of the boar is poor, and the boar may also be unable to induce estrus in sows due to its too large body size or limb disabilities. The utilization efficiency of the boar is low, and the contact and stimulation between the boar and the sow are not in place, which will also affect the estrus induction effect of the boar on the sow.

[0039] In view of the above problems, this embodiment provides a device for estrus induction of sows, as Figures 1-3 shown, including a base 5. There are multiple bases 5 and the bases 5 are connected and fixed to each other. The base 5 is detachable. There is a retaining platform above the front end of the base 5. When it is necessary to increase the number of boars for estrus induction, additional bases 5 can be added and connected and fixed together. A fixed seat 10 is fixedly installed at the bottom of the base 5, and a rotating seat 11 is rotatably installed at the bottom of the fixed seat 10. A wheel frame 12 is welded to the bottom of the rotating seat 11. A wheel 13 is fitted inside the wheel frame 12, and a locking stop block is provided on the wheel frame 12. The wheel 13 can be fixed through the locking stop block, which can prevent the base 5 from moving caused by the jumping of the estrus induction boar on the base and can keep the base 5 stable. A limit bar 3 is provided above the base 5. The bottom end of the limit bar 3 is connected and fixed to the base 5 through a snap lock. Left front door 16 and right front door 17 are symmetrically provided at the front end of the limit bar 3. The outer end sides of the left front door 16 and the right front door 17 are connected and fixed to the limit bar 3 through twisting hinges 4. The inner end sides of the left front door 16 and the right front door 17 are connected through a first bolt 14. The left front door 16 and the right front door 17 can be opened and closed through the first bolt 14; a rear door 18 is provided at the rear end of the limit bar 3. One end side of the rear door 18 is connected and fixed to the limit bar 3 through a twisting hinge 4. A second bolt 15 is fixed to the other end side of the rear door 18. The rear door 18 can be opened and closed with the limit bar 3 through the second bolt 15.

[0040] Rope boxes 1 are provided on the upper parts of both sides of the limit bar 3. The rope boxes 1 are cylindrical, as Figures 4-6As shown in the figure, a first through hole 22 is formed in the rear end face of the rope box 1. A fixing collar 2 is sleeved on the outer peripheral side of the rope box 1. The two ends of the fixing collar 2 are fixed to the limiting bar 3 by bolts. A twisting shaft 20 is vertically and rotatably sleeved in the rope box 1. The twisting shaft 20 can rotate in the rope box 1. A scroll spring 19 is provided at the top end of the twisting shaft 20. The inner end of the scroll spring 19 is embedded and fixed on the twisting shaft 20. The outer end of the scroll spring 20 is embedded and fixed on the inner side wall of the rope box 1. The scroll spring 19 has strong elasticity. A limiting rope 7 is spirally wound around the twisting shaft 20. The inner end of the limiting rope 7 is fixedly connected to the twisting shaft 20. A limiting block 21 is installed on the limiting rope 7. A groove 23 is formed in the twisting shaft 20. When the limiting rope 7 is rotationally wound around the twisting shaft 20, the limiting block 21 on the limiting rope 7 can be fitted and sleeved in the groove 23. A limiting box 6 is welded to the limiting bar 3 behind the rope box 1. The limiting box 6 is rectangular. The limiting box 6 and the rope box 1 are on the same horizontal line, as Figures 7-8 shown. Third through holes are formed in the front and rear end faces of the limiting box 6. Fixed seat holders 24 are symmetrically arranged up and down in the limiting box 6. The tails of the fixed seat holders 24 are fixed to the inner side wall of the limiting box 6. A sliding plate 25 is slidably sleeved in the clamping plate at the front end of the fixed seat holder. A sliding space is left between the sliding plate 25 and the clamping plate. The sliding plate 25 can slide up and down in the clamping plate. A second through hole 26 is horizontally penetrated through the center position of the sliding plate 25. The aperture of the second through hole 26 is smaller than the diameter of the limiting block 21. The other end of the limiting rope 7 extends out of the first through hole 22, passes through the third through hole 27 into the limiting box 6, and then the other end of the limiting rope 7 passes through the second through hole 26 and the third through hole 27 to the outside of the limiting box 6. Since the limiting rope 7 is wound around the twisting shaft 20, when passing through the sliding plate 25, the sliding plate 25 will slide up and down following the limiting rope 7, reducing the wear rate of the limiting rope 7 during use. A roller frame 8 is vertically fixedly welded to the side tail end of the limiting bar 3. The roller frame 8 and the limiting box 6 are on the same horizontal line. A V-shaped roller 9 is fitted in the roller frame 8. The limiting rope 7 extending out of the limiting box 6 is wound around the V-shaped roller 9 into the limiting bar 3. The limiting rope 7 has a tension force.

[0041] When it is necessary to arouse the estrus of sows, the rear door 18 is opened, and two or more boars can be driven into the confinement pen 3 according to needs. The confinement pen 3 can also prevent the boars from fighting with each other. Then the staff ties the confinement rope 7 to the boar, closes the rear door 18 through the second bolt 15, and changes the left front door 16 and the left front door 17 to the open state through the second bolt 14. The staff moves the boar through this device into the sow group. The boar will walk forward in the confinement pen 3, push open the left front door 16 and the right front door 17, and stretch out the front half of its body out of the confinement pen 3 to participate in the estrus induction and courtship of sows, but not in mating. And the boar getting out of the confinement pen 3 can further stimulate the boar's own sexual desire, improving the estrus induction effect of the boar. After the boar retreats into the confinement pen 3, the left front door 16 and the right front door 17 will reset under the torsion action of the torsion hinge and be limited by the retaining platform. When the boar moves forward in the confinement pen 3, the confinement rope 7 is pulled out from the rope box 1. When the front half of the boar's body stretches out of the confinement pen 3, the limiting block 21 on the confinement rope 7 will be limited and pressed tightly on the sliding plate 25, so that the boar can only stretch out the front half of its body out of the confinement pen 3 under the action of the confinement rope 7, and the rear half of its body is in the confinement pen 3 to prevent the boar from running out of the confinement pen 3.

[0042] Example 2, a device for inducing estrus in sows in this embodiment will be described centering on the differences from those in Example 1.

[0043] In this embodiment, the first bolt 14 locks the left front door 16 and the right front door 17. Drive the boars with too large body size or limb disabilities but good sexual desire into the confinement pen 3, and no longer tie the confinement rope 7 to the boars. The staff moves the boars through this device into the pigsty, and then drives the sows into the pigsty, enabling multiple boars to induce estrus in group sows or individuals, which is beneficial for sows to come into heat. And when the sows enter a new environment, it has an obvious promoting effect on the reproductive hormones in the sows' bodies, improves the utilization efficiency of excellent boars, and at the same time improves the contact effect between boars and sows, making the boars stimulate the sows in place and improving the estrus induction efficiency.

[0044] Example 3, a device for inducing estrus in sows in this embodiment will be described centering on the differences from those in Example 2.

[0045] In this embodiment, as Figure 9 shown, a feeding trough 28 is fixedly installed on the lower half of the left front door 16, and a drinking trough 29 is installed on the left front door 16 beside the feeding trough 28. After driving the boars into the confinement pen 3, the boars can eat or drink water in the confinement pen 3, avoiding the boars' estrus induction effect being affected due to hunger.

[0046] Example 4, a device for inducing estrus in sows in this embodiment will be described centering on the differences from those in Example 1.

[0047] In this embodiment, the head and tail directions of adjacent limiting fences 3 above the base 5 are opposite. After driving boars into the limiting fences 3, since the heads of the boars face different positions, the number of induced sows is increased, the workload of the staff during estrus inspection is reduced, the work efficiency of the staff is improved, and the labor cost is also reduced.

[0048] Embodiment 5. A device for inducing estrus in sows in this embodiment will be described with the differences from those in Embodiment 1 as the focus.

[0049] In this embodiment, as Figures 10-11 shown, a bracket 30 is provided above the limiting fence 3. The bottom end of the bracket 30 is fixed to the top ends on both sides of the limiting fence 3. A plurality of spray heads 31 are vertically and evenly installed on the bracket 30. The spray heads 31 are connected to a water source through a water delivery pipe. Through the spray heads 31, the boars in the limiting fence 3 can be cooled in hot summer, avoiding the situation that the libido of the boars is reduced due to hot weather, improving the libido of the boars, and thus being beneficial to improving the estrus efficiency of the sows.

[0050] The above are only the preferred embodiments of the present invention and do not limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A device for inducing estrus in sows, comprising a bottom plate, and a traveling mechanism is provided below the bottom plate, characterized in that, It further includes a limit bar, a rope box, a fixed snap ring, a limit box, a torsion hinge, a roller assembly, a connecting piece and a spraying system. The limit bar is fixedly arranged above the bottom plate. The front end of the limit bar is symmetrically provided with a left front door and a right front door. The left front door and the right front door are connected and fixed to the limit bar through torsion hinges. The connecting piece is arranged between the left front door and the right front door. The rear end of the limit bar is provided with a rear door. The rope box is arranged on both sides of the limit bar, and a first through hole is opened at the rear end of the rope box. The fixed snap ring is sleeved on the outer peripheral side of the rope box, and both ends of the fixed snap ring are fixed on the limit bar. The rope box includes a torsion shaft, a scroll spring and a limit rope. The torsion shaft is rotatably sleeved and fixed in the rope box. The scroll spring is arranged at the top end of the torsion shaft. The inner end of the scroll spring is fixedly embedded in the torsion shaft, and the outer end is embedded in the inner wall of the rope box. The limit rope is spirally wound around the torsion shaft, and the inner end of the limit rope is connected and fixed to the torsion shaft. A limit block is fixed on the limit rope. A groove corresponding to the limit block is opened on the torsion shaft, and the limit block is fitted and sleeved in the groove. The limit box is fixed on the limit bar behind the rope box, and third through holes are opened at the front and rear ends of the limit box. The limit box includes a fixed seat and a sliding plate. The fixed seats are symmetrically fixed up and down in the limit box. The sliding plate is slidably fitted in the fixed seats. A second through hole is horizontally penetrated on the sliding plate. The sliding plate is vertically slidably fitted between the symmetrically arranged fixed seats up and down, and a sliding space is left between the sliding plate and the fixed seats. The roller assembly includes a roller frame and a roller. The roller frame is vertically fixed at the side and rear end of the limit bar. The roller is fitted in the roller frame. The outer end of the limit rope passes through the second through hole and extends out of the limit box and is wound around the roller into the limit bar. The spraying system is arranged above the limit bar. The spraying system includes a bracket and a nozzle. The bottom end of the bracket is fixed at the top end of the limit bar. The nozzles are multiple and are vertically and evenly fixed below the bracket. The nozzles are connected to a water source through a water delivery pipe. The rope box, the limit box and the roller frame are fixed on the upper part of the side of the limit bar, and the rope box, the limit box and the roller frame are on the same horizontal line.

2. The device for inducing estrus in sows according to claim 1, characterized in that, The traveling mechanism is a self-locking universal wheel. The self-locking universal wheel includes a fixed seat, a rotating seat, a wheel frame and a wheel. The fixed seat is fixed at the bottom of the bottom plate. The rotating seat is rotatably fixed at the bottom of the fixed seat. The wheel frame is fixed on the rotating seat. The wheel is sleeved in the wheel frame. A locking stop block is arranged on the wheel frame.

3. The device for inducing estrus in sows according to claim 1, characterized in that, The bottom plate is composed of multiple bases. The bases are detachable. The bases are connected and fixed to each other. The bottom of the limit bar is fixed to the base through a catch lock. A retaining platform is fixed above the front end of the base.

4. The device for inducing estrus in sows according to claim 1, characterized in that, The connecting piece is a bolt or a buckle.

5. A device for inducing estrus in sows according to claim 1, characterized in that, It further includes a feeding trough and a drinking trough. The feeding trough is fixed on the left front door. The drinking trough is fixed on the left front door on one side of the feeding trough.

6. The device for inducing estrus in sows according to claim 1, characterized in that, The diameter of the limit block is larger than the aperture of the second through hole.

7. A device for inducing estrus in sows according to claim 1, characterized in that, One end side of the rear door is connected to the limit bar through a torsion hinge.

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