A method and device for breeding of yak breeds

Abstract

The application discloses a kind of yaks good breed reproduction method and device, it is related to yak good breed reproduction technical field;Method includes the following steps: estrus identification and synchronization treatment, to the suitable breeding female yak is carried out estrus identification, using test emotion bull, to the female cow that has not estrus is carried out synchronization estrus treatment;Semen preparation, select the excellent seed bull frozen semen determined by offspring, and after thawing frozen semen, microscopic examination;Prepare visible insemination gun, camera and insemination tube are disinfected before use, connect mobile terminal equipment, debug to image clear state;Insemination operation;Postoperative management and pregnancy diagnosis, early pregnancy diagnosis is carried out through visible insemination gun after insemination, observe uterine embryo development situation;To not pregnant cow, timely supplementary supply.The application realizes accurate uterine insemination by visible insemination gun, avoids the waste of semen caused by position inaccuracy in traditional method;Avoid the stimulation and damage of rectal operation to cow, and the vibration massage of insemination gun can make cow complete insemination in relatively comfortable state.

Description

Technical Field

[0001] This invention relates to the field of yak breeding technology, and in particular to a method and apparatus for breeding superior yak breeds. Background Technology

[0002] As a livestock species unique to high-altitude and cold regions, the yak is an important economic source for livestock production in plateau pastoral areas. Breeding improved varieties is a key link in enhancing yak productivity and promoting breed improvement. However, due to the unique reproductive physiology of yaks and their harsh living environment, their reproductive efficiency has long been low, and both traditional natural mating and artificial insemination techniques have certain limitations. Currently, artificial insemination technology for yaks has been initially applied, but the following problems still exist in practical operation: The cervix of yaks has a complex structure, and routine blind insemination can easily cause damage. Furthermore, semen can easily remain in the reproductive tract or flow back, severely impacting conception rates. Pregnancy diagnosis often relies on external observation or rectal examination, but early detection is not very accurate, making it difficult to promptly reinsert non-pregnant yaks and prolonging the non-pregnant period.

[0003] In recent years, although some studies have attempted to use visualization technologies such as endoscopy for cattle reproduction, the operation is complex, the adaptability is poor, and it cannot ensure the comfort of yaks during the insemination process, making it difficult to fully meet the actual needs of high-altitude pastoral areas. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a method and apparatus for breeding superior yak breeds.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A method for breeding superior yak breeds includes the following steps: S1: Estrus detection and synchronization treatment: Estrus detection is performed on breeding female yaks using estrus-testing bulls, and estrus synchronization treatment is applied to female yaks that have not yet come into estrus. S2: Semen preparation: Frozen semen from superior male yaks with proven offspring was selected and examined under a microscope after thawing. S3: Prepare the visual insemination gun. Before use, disinfect the camera and insemination tube, connect the mobile terminal device, and adjust it to a clear image state. S4: Insemination procedure; S5: Postoperative management and pregnancy diagnosis. Early pregnancy diagnosis is performed after insemination using a visual insemination gun to observe the development of the embryo in the uterus. Non-pregnant cows are promptly re-inserted.

[0006] As a preferred embodiment of the present invention, in step S4, the insemination operation is specifically as follows: S41: Restrain the female yak to a special restraint frame and clean and disinfect her vulva; S42: Slowly insert the visual insemination gun into the vagina to observe the internal condition of the reproductive tract in real time; S43: When the camera displays the cervix, adjust the angle so that the tip of the insemination gun is aligned with the cervix; S44: Gently push the insemination gun through the cervix and into the uterine body 2-3cm; S45: After confirming that the insemination gun is inside the uterus, inject the semen.

[0007] A breeding device for improved yak breeds, comprising the aforementioned visual insemination gun, includes an insemination gun body with a handle at the bottom. A delivery barrel is provided on the insemination gun body, penetrating the body. An insemination tube is used in conjunction with the delivery barrel, the diameter of which is smaller than the inner diameter of the delivery barrel. The insemination tube is connected to an insemination supply device. An annular groove is formed on the inner side of the delivery barrel, and an annular elastic membrane is provided on the inner wall of the delivery barrel. The annular elastic membrane is used to cover the annular groove, thereby forming an annular cavity. An annular elastic bladder is installed inside the annular cavity, and the annular elastic bladder is connected to an elastic bladder via a connecting tube.

[0008] As a preferred embodiment of the present invention: a miniature camera is provided at the front end of the delivery barrel, and a display module is installed on the main body of the insemination gun, with the miniature camera and the display module being electrically connected.

[0009] As a preferred embodiment of the present invention: the insemination supply device includes a sperm storage tube, a squeeze plug is movably installed inside the sperm storage tube, a pull ring is provided on one side of the squeeze plug, an end cap is detachably installed at one end of the sperm storage tube by means of threads, an air tube is installed on the end cap, the air tube is connected to an air bag, a one-way air inlet valve is provided at one end of the air bag, and a one-way air supply valve is provided on the air tube for supplying gas from the air bag to the sperm storage tube; an elastic diaphragm is provided at one end of the sperm storage tube, and micro-slits are provided on the elastic diaphragm, and the micro-slits remain sealed when the elastic diaphragm is not deformed.

[0010] As a preferred embodiment of the present invention, the vas deferens is provided with uniformly distributed graduation lines.

[0011] In a preferred embodiment of the present invention: a connecting tube is slidably mounted on the inner wall of one end of the vas deferens, the connecting tube and the inner wall of the vas deferens are connected by an annular diaphragm, one end of the connecting tube is connected to the sperm storage tube by a thread, and mounting plates are fixed on both the connecting tube and the vas deferens. A pressure sensing component is mounted on the mounting plate of the vas deferens, and a spring is provided between the pressure sensing component and the mounting plate of the connecting tube; the pressure sensing component is connected to the display module via a connector plug.

[0012] In a preferred embodiment of the present invention: the visual insemination gun is used in conjunction with a cleaning device, the cleaning device including a cleaning chamber, a mounting frame fixed to the bottom inner wall of the cleaning chamber, a central tube fixed to the inner side of the mounting frame, a first annular bracket disposed inside the central tube, a first sliding rod slidably connected to the top inner wall of the central tube, the first sliding rod and the first annular bracket being connected by a first support spring, a first annular brush holder fixed to the top of the first sliding rod, the bottom of the first annular brush holder extending to the outside of the central tube, a uniformly distributed first brush head disposed on the outside of the first annular brush holder, a mounting base mounted on the mounting frame, a riser mounted on the mounting base, and the mounting base... The system is connected to the interior of the riser, which has a fixed strip-shaped slide rail. A second slide rod is slidably connected to the riser, and a second annular support is provided on the inside of the riser. The second annular support and the second slide rod are connected by a second support spring. A second annular brush holder is fixed to the top of the second slide rod, and a second brush head is evenly distributed on the inside of the second annular brush holder. Both the central pipe and the riser have through holes. When not subjected to external force, the height of the bottom of the first and second slide rods is lower than the height of the through holes. A liquid supply device is installed in the cleaning chamber, and the output end of the liquid supply device is connected to the interior of the central pipe and the mounting base through a pipeline structure.

[0013] As a preferred embodiment of the present invention: the pipeline structure includes a liquid delivery pipe, one end of which is connected to the output end of the liquid supply device, and one end of the liquid delivery pipe is connected to a first delivery pipe and a second delivery pipe. One end of the first delivery pipe is connected to a central pipe, and one end of the second delivery pipe is connected to a mounting base. The first delivery pipe and the second delivery pipe are equipped with the same piston chamber, the interior of which is connected to the first delivery pipe and the second delivery pipe. A piston for blocking the first delivery pipe or the second delivery pipe is movably installed in the piston chamber.

[0014] As a preferred embodiment of the present invention: a piston rod is fixed to one end of the piston, the piston rod slides in a sealed manner at one end of the piston chamber, a strip slide is fixed to one end of the piston rod, an installation box is fixed in the cleaning chamber, a piston control motor is installed in the installation box, and a rotating frame is installed at the output end of the piston control motor; based on the rotation of the rotating frame, the strip slide moves back and forth, thereby blocking the first conveying pipe or the second conveying pipe.

[0015] The beneficial effects of this invention are as follows: 1. This invention achieves precise intrauterine insemination using a visual insemination gun, avoiding the waste of semen caused by inaccurate positioning in traditional methods; it also avoids the stimulation and damage to cows caused by rectal operation, and the vibration massage function of the insemination gun allows cows to complete insemination in a relatively comfortable state.

[0016] 2. By setting up structures such as an annular elastic bladder, the present invention can inject air into the annular elastic bladder by squeezing the elastic bladder when the vas deferens is inserted for insemination, thereby squeezing the annular elastic membrane and making the annular elastic membrane tightly adhere to the outer wall of the vas deferens, preventing semen backflow and improving practicality.

[0017] 3. By setting up an insemination supply device, the present invention can inject air into the sperm storage tube by repeatedly squeezing the air bag, thereby pushing the squeezing plug to move inside the sperm storage tube and squeezing the semen out of the sperm storage tube by squeezing the plug; by setting a scale line, the length of the insemination tube inserted into the delivery gun barrel can be determined, thereby performing the operation accurately.

[0018] 4. By setting up a pressure sensing component and other structures, the present invention allows the insertion of the insemination tube by pushing the mounting plate during operation. If the resistance is large, the spring is compressed, thereby enabling the pressure sensing component to observe the force situation in real time and prevent excessive force from causing damage to the yak. ​​Since the connecting tube and the insemination tube are connected by an annular diaphragm, the sealing of the structure is ensured.

[0019] 5. By setting up a cleaning device, the present invention can insert the delivery gun barrel into the outside of the first annular brush holder, with the first brush head in contact with the inner wall of the delivery gun barrel and the second brush head in contact with the outer wall of the delivery gun barrel. The liquid supply device works to supply liquid, and the first slide rod and the second slide rod are pushed upward based on hydraulic pressure, thereby discharging the liquid from the through hole. During the process, the first brush head and the second brush head clean the inner and outer walls of the delivery gun barrel.

[0020] 6. By setting up a piston chamber and piston structure, the present invention can control the motor to work during the cleaning process, drive the rotating frame to move the strip slide, so that the piston alternately blocks the first and second delivery pipes, and the liquid is intermittently injected into the central pipe and the riser pipe. This achieves the movement mode of pushing the structure upward when liquid is injected and resetting downward based on the spring when liquid is not injected, thereby achieving the purpose of reciprocating brushing. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the device of the present invention; Figure 2 This is a cross-sectional structural schematic diagram of the insemination sleeve and insemination tube of the device of the present invention; Figure 3 This is a schematic diagram of the separation of the insemination sleeve and the insemination tube in the device of the present invention; Figure 4 This is a cross-sectional structural schematic diagram of the sperm storage tube and connecting tube of the device of the present invention; Figure 5 This is a schematic diagram of the cleaning chamber of the device of the present invention; Figure 6 This is a schematic diagram of the internal structure of the cleaning chamber of the device of the present invention; Figure 7 This is a cross-sectional structural schematic diagram of the piston chamber of the device of the present invention; Figure 8 This is a cross-sectional structural diagram of the central tube and mounting base of the device of the present invention.

[0022] In the diagram: 1-Insemination gun body; 2-Insemination barrel; 3-Vibration device; 4-Holding handle; 5-Insemination tube; 6-One-way air inlet valve; 7-Air bladder; 8-One-way air delivery valve; 9-Air tube; 10-End cap; 11-Semen storage tube; 12-Connecting plug; 13-Display module; 14-Miniature camera; 15-Annular elastic diaphragm; 16-Connecting tube; 17-Annular elastic bladder; 18-Elastic bladder; 19-Mounting plate; 20-Pull ring; 21-Squeezing plug; 22-Elastic diaphragm; 23-Connecting tube; 24-Scale line; 25-Pressure sensor Components; 26-Spring; 27-Liquid supply device; 28-Liquid delivery pipe; 29-Cleaning chamber; 30-Mounting box; 31-First delivery pipe; 32-Second delivery pipe; 33-Mounting bracket; 34-Piston chamber; 35-Piston control motor; 36-Rotating bracket; 37-Strip slide; 38-Piston; 39-Mounting base; 40-Center tube; 41-Riser tube; 42-First annular bracket; 43-Through hole; 44-First slide rod; 45-First annular brush holder; 46-Second slide rod; 47-Second annular bracket; 48-Second annular brush holder. Detailed Implementation

[0023] The technical solution of the present invention will be further described in detail below with reference to specific embodiments.

[0024] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0025] Example 1: A method for breeding superior yak breeds, such as Figure 1-8 As shown, it includes the following steps: S1: Estrus detection and synchronization treatment. Estrus detection is performed on breeding female yaks using estrus-testing bulls. Estrus synchronization treatment is performed on non-estrus female yaks, with intramuscular injection of PGF2α and placement of CIDR. On the 7th day, the thrombus is removed and PGF2α is injected again. On the 9th day, GnRH is injected intramuscularly. Timed artificial insemination is carried out 24-36 hours later. S2: Semen preparation: Frozen semen from superior male yaks with proven offspring characteristics is selected. After thawing, the frozen semen is examined under a microscope to ensure that the sperm motility is ≥0.4 and the effective sperm count is ≥10 million / dose. S3: Prepare the visual insemination gun. Before use, disinfect the camera and insemination tube, connect the mobile terminal device, and adjust it to a clear image state. S4: Insemination procedure: S41: Restrain the female yak to a special restraint frame and clean and disinfect her vulva; S42: Slowly insert the visual insemination gun into the vagina to observe the internal condition of the reproductive tract in real time; S43: When the camera displays the cervix, adjust the angle so that the tip of the insemination gun is aligned with the cervix; S44: Gently push the insemination gun through the cervix and into the uterine body about 2-3cm; S45: After confirming that the insemination gun is inside the uterus, inject the semen; S5: Postoperative management and pregnancy diagnosis. Early pregnancy diagnosis is performed 40 days after insemination using a visual insemination gun to observe the development of the embryo in the uterus. Non-pregnant cows are promptly re-inserted.

[0026] Example 2: An insemination gun for a method of breeding superior yak breeds, such as Figure 1-8 As shown, the device includes an insemination gun body 1, a handle 4 at the bottom of the insemination gun body 1, a delivery barrel 2 that penetrates the insemination gun body 1, an insemination tube 5 used in conjunction with the delivery barrel 2, the diameter of the insemination tube 5 being smaller than the inner diameter of the delivery barrel 2, the insemination tube 5 being connected to an insemination supply device, an annular groove being formed on the inner side of the delivery barrel 2, an annular elastic membrane 15 being provided on the inner wall of the delivery barrel 2, the annular elastic membrane 15 being used to cover the annular groove, thereby forming an annular cavity, an annular elastic bladder 17 being installed in the annular cavity, and an elastic bladder 18 being connected to the annular elastic bladder 17 through a connecting pipe 16; By setting up structures such as the annular elastic bladder 17, when the vas deferens 5 is inserted for insemination, air can be injected into the annular elastic bladder 17 by squeezing the elastic bladder 18, thereby squeezing the annular elastic membrane 15, so that the annular elastic membrane 15 is tightly attached to the outer wall of the vas deferens 5, preventing semen backflow and improving practicality.

[0027] To facilitate insemination; such as Figure 1 As shown, a miniature camera 14 is provided at the front end of the delivery barrel 2, and a display module 13 is installed on the main body 1 of the insemination gun. The miniature camera 14 is electrically connected to the display module 13.

[0028] To facilitate insemination; such as Figure 1 , Figure 3 , Figure 4As shown, the insemination supply device includes a sperm storage tube 11, a squeeze plug 21 is movably installed inside the sperm storage tube 11, a pull ring 20 is provided on one side of the squeeze plug 21, an end cap 10 is detachably installed at one end of the sperm storage tube 11 by threads, an air tube 9 is installed on the end cap 10, an air bag 7 is connected to the air tube 9, a one-way air inlet valve 6 is provided at one end of the air bag 7, and a one-way air supply valve 8 is provided on the air tube 9 to supply gas from the air bag 7 to the sperm storage tube 11; an elastic diaphragm 22 is provided at one end of the sperm storage tube 11, and micro-slits are provided on the elastic diaphragm 22. When the elastic diaphragm 22 is not deformed, the micro-slits remain sealed. By setting up an insemination supply device, air can be injected into the sperm storage tube 11 by repeatedly squeezing the air bag 7, thereby pushing the squeeze plug 21 to move inside the sperm storage tube 11, and using the squeeze plug 21 to squeeze the semen out of the sperm storage tube 11.

[0029] To facilitate control of the insertion length of the vas deferens 5; such as Figure 3 , Figure 4 As shown, the vas deferens 5 is provided with evenly distributed scale lines 24; By setting the scale line 24, the length of the vas deferens 5 inserted into the delivery gun barrel 2 can be determined, thus enabling accurate operation.

[0030] like Figure 3 , Figure 4 As shown, a connecting tube 23 is slidably installed on the inner wall of one end of the vas deferens 5. The connecting tube 23 and the inner wall of the vas deferens 5 are connected by an annular diaphragm. One end of the connecting tube 23 is connected to the sperm storage tube 11 by a thread. Mounting plates 19 are fixed on both the connecting tube 23 and the vas deferens 5. A pressure sensing component 25 is installed on the mounting plate 19 of the vas deferens 5. A spring 26 is provided between the pressure sensing component 25 and the mounting plate 19 of the connecting tube 23. The pressure sensing component 25 is connected to the display module 13 via a connecting plug 12. The display module 13 is used to receive information from the miniature camera 14 and the pressure sensing component 25, and convert it into visual information to be displayed on the screen. By setting up structures such as the pressure sensing component 25, during operation, the insemination tube 5 is inserted by pushing the mounting plate 19. If the resistance is large, the spring 26 is compressed, so the force can be observed in real time according to the pressure sensing component 25, preventing excessive force from causing damage to the yak. ​​Since the connecting tube 23 and the insemination tube 5 are connected by an annular diaphragm, the sealing of the structure is ensured.

[0031] Preferably, the insemination gun body 1 is equipped with a vibration device 3. The vibration device 3 can be controlled to work according to actual needs to perform vibration massage, so that the yak can better cooperate with insemination.

[0032] Example 3: A cleaning device for an insemination gun, such as Figure 5-8 As shown, the system includes a cleaning chamber 29. A mounting bracket 33 is fixed to the inner wall of the bottom of the cleaning chamber 29. A central tube 40 is fixed to the inner side of the mounting bracket 33. A first annular support 42 is installed inside the central tube 40. A first sliding rod 44 is slidably connected to the inner wall of the top of the central tube 40. The first sliding rod 44 and the first annular support 42 are connected by a first support spring. A first annular brush holder 45 is fixed to the top of the first sliding rod 44. The bottom of the first annular brush holder 45 extends to the outside of the central tube 40. Evenly distributed first brush heads are arranged on the outside of the first annular brush holder 45. A mounting base 39 is mounted on the mounting bracket 33. A riser 41 is mounted on the mounting base 39. The mounting base 39 communicates internally with the riser 41. A fixed... The system includes a strip-shaped slide rail 37, a second slide rod 46 that slides vertically inside the riser 41, a second annular support 47 on the inner side of the riser 41, and a second support spring connecting the second annular support 47 and the second slide rod 46. A second annular brush holder 48 is fixed to the top of the second slide rod 46, and evenly distributed second brush heads are arranged on the inner side of the second annular brush holder 48. Both the central tube 40 and the riser 41 have through holes 43. When not subjected to external force, the bottom heights of the first slide rod 44 and the second slide rod 46 are both lower than the height of the through holes 43. A liquid supply device 27 is installed inside the cleaning chamber 29, and the output end of the liquid supply device 27 is connected to the interior of the central tube 40 and the mounting base 39 through a pipe structure. By setting up a cleaning device, the delivery gun barrel 2 can be inserted to the outside of the first annular brush holder 45. The first brush head contacts the inner wall of the delivery gun barrel 2, and the second brush head contacts the outer wall of the delivery gun barrel 2. The liquid supply device 27 works to supply liquid. Based on hydraulic pressure, the first slide bar 44 and the second slide bar 46 are pushed upward, thereby discharging the liquid from the through hole 43. During the process, the first brush head and the second brush head clean the inner and outer walls of the delivery gun barrel 2.

[0033] To facilitate the control of the on / off state of the first conveying pipe 31 and the second conveying pipe 32; such as Figure 6 , Figure 7 As shown, the pipeline structure includes a liquid delivery pipe 28, one end of which is connected to the output end of the liquid supply device 27. One end of the liquid delivery pipe 28 is connected to a first delivery pipe 31 and a second delivery pipe 32. One end of the first delivery pipe 31 is connected to the central pipe 40, and one end of the second delivery pipe 32 is connected to the mounting base 39. The first delivery pipe 31 and the second delivery pipe 32 are equipped with the same piston chamber 34. The piston chamber 34 is connected to the first delivery pipe 31 and the second delivery pipe 32. A piston 38 for blocking the first delivery pipe 31 or the second delivery pipe 32 is movably installed in the piston chamber 34.

[0034] To facilitate control of piston 38's movement; such as Figure 7As shown, a piston rod is fixed to one end of the piston 38, and the piston rod slides in a sealed manner at one end of the piston chamber 34. A strip-shaped slide 37 is fixed to one end of the piston rod. An installation box 30 is fixed inside the cleaning chamber 29, and a piston control motor 35 is installed inside the installation box 30. A rotating frame 36 is installed at the output end of the piston control motor 35. Based on the rotation of the rotating frame 36, the strip-shaped slide 37 moves back and forth, thereby blocking the first conveying pipe 31 or the second conveying pipe 32. By setting up structures such as piston chamber 34 and piston 38, the piston can control the motor 35 to work during the cleaning process, driving the rotating frame 36 to move the strip slide 37, thereby causing the piston 38 to alternately block the first delivery pipe 31 and the second delivery pipe 32. Liquid is intermittently injected into the central pipe 40 and the riser pipe 41, thereby achieving a movement mode that pushes the structure upward when liquid is injected and returns it downward based on the spring when liquid is not injected, thus achieving the purpose of reciprocating brushing.

[0035] For the parts not disclosed in detail in this invention, such as necessary control modules, specific control methods, signal transmission methods, power supply methods, etc., those skilled in the art can ensure the smooth implementation of the solution of this invention based on common sense, normal thinking logic and existing technology.

[0036] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A method for breeding superior yak breeds, characterized in that, Includes the following steps: S1: Estrus detection and synchronization treatment: Estrus detection is performed on breeding female yaks using estrus-testing bulls, and estrus synchronization treatment is applied to female yaks that have not yet come into estrus. S2: Semen preparation: Frozen semen from superior male yaks with proven offspring was selected and examined under a microscope after thawing. S3: Prepare the visual insemination gun. Before use, disinfect the camera and insemination tube, connect the mobile terminal device, and adjust it to a clear image state. S4: Insemination procedure; S5: Postoperative management and pregnancy diagnosis. Early pregnancy diagnosis is performed after insemination using a visual insemination gun to observe the development of the embryo in the uterus. Non-pregnant cows are promptly re-inserted.

2. The method for breeding superior yak breeds according to claim 1, characterized in that, In step S4, the insemination operation is specifically as follows: S41: Restrain the female yak to a special restraint frame and clean and disinfect her vulva; S42: Slowly insert the visual insemination gun into the vagina to observe the internal condition of the reproductive tract in real time; S43: When the camera displays the cervix, adjust the angle so that the tip of the insemination gun is aligned with the cervix; S44: Gently push the insemination gun through the cervix and into the uterine body 2-3cm; S45: After confirming that the insemination gun is inside the uterus, inject the semen.

3. A breeding device for superior yak breeds, characterized in that, It is the visual insemination gun as described in claim 2, including an insemination gun body (1), a handle (4) is provided at the bottom of the insemination gun body (1), a delivery gun barrel (2) is provided on the insemination gun body (1) and a delivery tube (5) is used in conjunction with the delivery gun barrel (2). The diameter of the delivery tube (5) is smaller than the inner diameter of the delivery gun barrel (2). The delivery tube (5) is connected to an insemination supply device. An annular groove is opened on the inner side of the delivery gun barrel (2). An annular elastic membrane (15) is provided on the inner wall of the delivery gun barrel (2). The annular elastic membrane (15) is used to cover the annular groove, thereby forming an annular cavity. An annular elastic bladder (17) is installed in the annular cavity. The annular elastic bladder (17) is connected to an elastic bladder (18) through a connecting pipe (16).

4. The yak breeding device according to claim 3, characterized in that, The front end of the delivery gun barrel (2) is provided with a miniature camera (14), and the main body (1) of the insemination gun is equipped with a display module (13). The miniature camera (14) is electrically connected to the display module (13).

5. The yak breeding device according to claim 3, characterized in that, The insemination supply device includes a sperm storage tube (11), a squeeze plug (21) is movably installed inside the sperm storage tube (11), a pull ring (20) is provided on one side of the squeeze plug (21), an end cap (10) is detachably installed at one end of the sperm storage tube (11) by a thread, an air tube (9) is installed on the end cap (10), an air bag (7) is connected to the air tube (9), a one-way air inlet valve (6) is provided at one end of the air bag (7), and a one-way air supply valve (8) is provided on the air tube (9) to supply gas from the air bag (7) to the sperm storage tube (11); an elastic diaphragm (22) is provided at one end of the sperm storage tube (11), and a micro slit is provided on the elastic diaphragm (22). When the elastic diaphragm (22) is not deformed, the micro slit remains sealed.

6. The yak breeding device according to claim 3, characterized in that, The vas deferens (5) is provided with evenly distributed graduation lines (24).

7. The yak breeding device according to claim 5, characterized in that, A connecting tube (23) is slidably installed on the inner wall of one end of the vas deferens (5). The connecting tube (23) and the inner wall of the vas deferens (5) are connected by an annular diaphragm. One end of the connecting tube (23) is connected to the sperm storage tube (11) by a thread. Mounting plates (19) are fixed on both the connecting tube (23) and the vas deferens (5). A pressure sensing component (25) is installed on the mounting plate (19) of the vas deferens (5). A spring (26) is provided between the pressure sensing component (25) and the mounting plate (19) of the connecting tube (23). The pressure sensing component (25) is connected to the display module (13) via a connecting plug (12).

8. The yak breeding device according to claim 7, characterized in that, The visual insemination gun is used in conjunction with a cleaning device, which includes a cleaning chamber (29). A mounting bracket (33) is fixed to the bottom inner wall of the cleaning chamber (29). A central tube (40) is fixed to the inner side of the mounting bracket (33). A first annular support (42) is provided inside the central tube (40). A first sliding rod (44) is slidably connected to the top inner wall of the central tube (40). The first sliding rod (44) and the first annular support (42) are connected by a first support spring. A first annular brush holder (45) is fixed to the top of the first sliding rod (44). The bottom of the first annular brush holder (45) extends to the outside of the central tube (40). A first brush head is evenly distributed on the outside of the first annular brush holder (45). A mounting base (39) is installed on the mounting bracket (33). A riser (41) is installed on the mounting base (39). The mounting base (39) and the riser (41) are connected internally. The riser (41) is connected to a strip slide (37) and a second slide rod (46) is slidably connected inside the riser (41). A second ring bracket (47) is provided inside the riser (41). The second ring bracket (47) and the second slide rod (46) are connected by a second support spring. A second ring brush holder (48) is fixed at the top of the second slide rod (46). A second brush head is evenly distributed inside the second ring brush holder (48). Both the central tube (40) and the riser (41) are provided with through holes (43). When no external force is applied, the height of the bottom of the first slide rod (44) and the second slide rod (46) is lower than the height of the through hole (43). A liquid supply device (27) is installed in the cleaning chamber (29). The output end of the liquid supply device (27) is connected to the interior of the central tube (40) and the mounting base (39) through a pipe structure.

9. A yak breeding device according to claim 8, characterized in that, The pipeline structure includes a liquid delivery pipe (28), one end of which is connected to the output end of the liquid supply device (27). One end of the liquid delivery pipe (28) is connected to a first delivery pipe (31) and a second delivery pipe (32). One end of the first delivery pipe (31) is connected to the central pipe (40), and one end of the second delivery pipe (32) is connected to the mounting base (39). The first delivery pipe (31) and the second delivery pipe (32) are equipped with the same piston chamber (34). The piston chamber (34) is connected to the first delivery pipe (31) and the second delivery pipe (32). A piston (38) for blocking the first delivery pipe (31) or the second delivery pipe (32) is movably installed in the piston chamber (34).

10. A yak breeding device according to claim 9, characterized in that, The piston (38) has a piston rod fixed at one end, and the piston rod slides in a sealed manner at one end of the piston chamber (34). A strip slide (37) is fixed at one end of the piston rod. An installation box (30) is fixed in the cleaning chamber (29). A piston control motor (35) is installed in the installation box (30). A rotating frame (36) is installed at the output end of the piston control motor (35). Based on the rotation of the rotating frame (36), the strip slide (37) moves back and forth, thereby blocking the first delivery pipe (31) or the second delivery pipe (32).

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