Breeding method and device for boars

Abstract

The invention discloses a breeding method and device for breeding boars, belongs to the technical field of breeding of the boars, and aims to solve the problems that in order to prevent seminal fluid from flowing out after insemination, an external air source is often relied on, so that discomfort of sows is easily caused, and the success rate of fertilization is influenced. The problem that the pregnancy effect is affected due to the fact that a pipeline is left in the body for a long time and discomfort of a pig is easily caused is solved, the gel suppository can be attached to the irregular mucous membrane form of the cervix uteri inner opening after being expanded, leakage caused by reserved gaps is avoided, the expansion degree does not need to be manually controlled, the error-tolerant rate is higher, and the application range is wide. Meanwhile, the plugging mechanism of the gel suppository is made of a natural degradation material, can be naturally degraded and removed or discharged along with uterus peristalsis, has no long-term retention risk, can improve the vagina flushing effect, can simulate the action during mating in the vagina, facilitates fertilization reaction of sows and is more beneficial to successful fertilization.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of pig breeding, in particular to a pig breeding method and device. BACKGROUND

[0002] When pig breeding is carried out, in order to ensure the reproduction of good breeds, an insemination device is often used for artificial insemination, and the goal is to accurately and safely deliver qualified pig semen to the genital tract of a sow, replace traditional natural mating, and realize efficient and controllable genetic improvement and population expansion.

[0003] At present, when the pig insemination device is used, in order to prevent the outflow of semen after insemination, an external gas source is often relied on to push the air bag wall to expand by gas pressure, so that the volume is expanded, and the shape after expansion is determined by the air bag preform structure, which cannot completely fit the irregular endocervical mucosa, gaps are easy to exist, if the inflation is excessive, the endocervical blood vessels may be compressed, the local blood flow is affected, and the sow is easily uncomfortable, the success rate of fertilization is affected, and flushing, insemination and lubrication are often operated separately, which prolongs the processing time, thereby causing the sow to be uncomfortable and the success rate of fertilization.

[0004] In view of the above problems, a pig breeding method and device are provided. SUMMARY

[0005] The purpose of the present application is to provide a pig breeding method and device, which is used to solve the problem that in order to prevent the outflow of semen after insemination, an external gas source is often relied on, thereby easily causing the sow to be uncomfortable and affecting the success rate of fertilization.

[0006] To achieve the above purpose, the present application provides the following technical scheme: a pig breeding method, comprising the following steps: S1: pig selection: selecting healthy and semen quality standard boars, recording estrus cycle, and determining the best insemination time through behavior observation or B-ultrasound; S2: semen collection and treatment: collecting boar semen using a dummy sow + semen collection cup, diluting after microscope detection, and storing in a 17 DEG C constant temperature box for standby; S3: sow fixation: using a limiting fence or sedation measure, and ensuring operation safety if necessary; S4: cleaning and disinfection: washing the vulva with physiological saline to avoid pollution, and disinfecting the insemination device; S5: inserting the insemination device: inserting the insemination tube into the vagina, pressing the insemination device to inject the semen into the uterus, and pressing the sow's back or using the odor of the boar to induce, such as spraying boar urine, to promote uterine contraction and absorption of semen; S6: health prevention and control: strictly high-temperature disinfecting the repeatedly used insemination device; S7: Record tracking: mark the time of insemination, boar number, and confirm pregnancy by B-ultrasound or estrus return after 21 days.

[0007] The application provides a boar insemination device, which comprises a liquid storage bag and an insemination catheter connected to the output end of the liquid storage bag, a catheter head is connected to the front end of the insemination catheter, a wrapping tube is sleeved on the middle part of the outer surface of the insemination catheter, and a convex end is fixed to the front end of the wrapping tube. One end of the wrapping tube is connected with a liquid outlet valve below, a liquid inlet valve is arranged on one side of the liquid outlet valve, a water storage bag is in common communication with the liquid outlet valve and the liquid inlet valve below, the wrapping tube and the convex end are in sliding connection with the insemination catheter, a lubricating mechanism is arranged on the inner side of the wrapping tube, a liquid adding port is mounted on one side of the outer surface of the wrapping tube, a plugging mechanism is arranged on the outer side of the catheter head and located on the front side of the convex end, and extrusion mechanisms are arranged on the two sides of the water storage bag.

[0008] Further, the wrapping tube comprises a fitting wall arranged on the outside of the insemination catheter, a through cavity is arranged on the inner side of the middle part of the fitting wall, a first interlayer cavity is formed in the upper side of the fitting wall, and the first interlayer cavity is in communication with the liquid outlet valve and the liquid inlet valve.

[0009] Further, a first liquid outlet hole is formed in the upper side of one end of the first interlayer cavity, a second liquid outlet hole is formed in the front end of the first interlayer cavity, the second liquid outlet hole is in communication with the convex end, and expansion pieces are arranged in the interiors of the first liquid outlet hole and the second liquid outlet hole.

[0010] Further, the lubricating mechanism comprises a second interlayer cavity arranged on the upper side of the through cavity, the second interlayer cavity is in communication with the liquid adding port, a fourth liquid outlet hole is formed in the upper surface of the second interlayer cavity, and expansion pieces are arranged in the interior of the fourth liquid outlet hole.

[0011] Further, the plugging mechanism comprises a fixing ring clamped on the outer surface of the insemination catheter, clamping heads are fixed to the inner surface of the fixing ring, a fixing hole is formed in the surface of the fixing ring, and the fixing hole is on the same horizontal line as the second liquid outlet hole.

[0012] Further, a fixing block is fixed to the interior of the fixing hole, a gel plug sleeve is fixed to one side of the fixing block, and a coating film is arranged on the outer surface of the gel plug sleeve.

[0013] Further, a flow-through groove is arranged on the lower side of the gel plug sleeve and on the surface of the insemination catheter, a third liquid outlet hole is arranged on the upper side of one side of the flow-through groove, the third liquid outlet hole is formed in the fitting wall, the through cavity is in flow communication with the flow-through groove through the third liquid outlet hole, sealing pieces are arranged on the inner side of the middle part of the gel plug sleeve, and a plurality of groups of the sealing pieces are annularly arranged on the gel plug sleeve.

[0014] Further, the extrusion mechanism comprises two groups of extrusion plates fixed on both sides below the water storage bag, and the upper surface of the extrusion plate on one side is fixed with a fixed plate one, and the upper surface of the extrusion plate on the other side is fixed with a fixed plate two.

[0015] Further, the surface of the fixed plate one is fixed with an arc-shaped rack, the surface of the fixed plate two is provided with a through groove, the temple part below the through groove is installed with a clamping tooth block, the bottom of the clamping tooth block is installed with a spring seat, the clamping tooth block is elastically connected with the fixed plate two through the spring seat, and one side of the clamping tooth block is fixed with a pressing block.

[0016] Compared with the prior art, the beneficial effects of the present application are as follows: 1、The present application can improve the effect of vaginal irrigation, reduce the possibility of bacterial residue, and at the same time can perform the action of reciprocating movement while irrigating in the vagina, which can simulate the action during mating, is beneficial to the fertilization reaction of sows, and is more beneficial to successful fertilization, so that irrigation and insemination can be processed at one time when the wrapping tube and the insemination catheter are inserted at one time, the efficiency is higher, and the problem of affecting pregnancy caused by repeated operation due to the discomfort of pigs is avoided.

[0017] 2、The present application can realize flexible plugging, avoid the problem that the pipeline is easily caused to be uncomfortable for pigs and further affect the pregnancy effect due to long-term storage in the body, the irregular mucosa shape of the endocervical orifice can be fitted after the gel plug expands, leakage caused by storage gap is avoided, and the expansion degree does not need to be manually controlled, the fault tolerance is higher, the plugging mechanism of the gel plug adopts a natural degradation material, can be naturally degraded and removed or discharged with uterine peristalsis, and there is no risk of long-term retention.

[0018] 3、The present application can automatically position during extrusion irrigation, realize one-way extrusion irrigation, and after irrigation is completed, the limiting can be released, so that the water storage bag can be expanded for suction work, thereby realizing controllable irrigation and suction, and avoiding the problem that the water storage bag is randomly and automatically rebounded to cause confusion of irrigation and suction. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a breeding method flowchart of the present application; Figure 2 It is an external overall three-dimensional structure schematic diagram of the insemination device of the present application; Figure 3 It is a cross-sectional internal three-dimensional structure schematic diagram of the wrapping tube of the present application; Figure 4 It is an internal three-dimensional structure schematic diagram of the through cavity of the present application; Figure 5 It is an internal three-dimensional structure schematic diagram of the protruding end of the present application; Figure 6 It is a gel plug of the present application; Figure 4The enlarged structure schematic diagram at A; Figure 7 The gel plug sleeve is the gel plug sleeve of the application; Figure 5 The enlarged structure schematic diagram at B; Figure 8 The gel plug sleeve is the gel plug sleeve of the application; Figure 9 The gel plug sleeve is the gel plug sleeve of the application; Figure 10 The gel plug sleeve is the gel plug sleeve of the application.

[0020] In the figure: 1, liquid storage bag; 2, insemination catheter; 3, catheter head; 4, wrapping tube; 41, fitting wall; 42, through cavity; 43, interlayer cavity one; 44, liquid outlet hole one; 45, liquid outlet hole two; 46, expansion piece one; 5, protruding end; 6, liquid outlet valve; 7, liquid inlet valve; 8, water storage bag; 9, plugging mechanism; 91, fixed ring; 92, fixed hole; 93, fixed block; 94, gel plug sleeve; 95, coating film; 96, flow-through groove; 97, liquid outlet hole three; 98, sealing piece; 99, clamping head; 10, lubricating mechanism; 101, interlayer cavity two; 102, liquid outlet hole four; 103, expansion piece two; 20, liquid inlet; 30, extrusion mechanism; 301, extrusion plate; 302, fixed plate one; 303, arc-shaped rack; 304, fixed plate two; 305, through groove; 306, clamping tooth block; 307, spring seat; 308, pressing block. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the application.

[0022] In order to solve the technical problems that flushing, insemination and lubrication are often operated separately, which prolongs the processing time, and thus causes the discomfort of pigs and the success rate of fertilization, such as Figures 1-6 As shown in the description, the following preferred technical solutions are provided: A breeding method of a breeding pig, comprising the following steps: Step one: breeding pig selection: for a male pig, a breeding male pig with healthy and qualified semen quality is selected, and for a female pig, the estrus cycle is recorded, and the optimal insemination time is determined through behavior observation or B-ultrasound; Step two: semen collection and processing: the semen of the male pig is collected by using a dummy sow + a semen collection cup, and after microscopic detection, the semen is diluted and stored in a 17 DEG C constant-temperature box for standby; Step three: female pig fixation: a limiting fence or a sedation measure is used, and if necessary, the operation safety is ensured; Step four: clean disinfection: clean the vulva with normal saline to avoid contamination, and disinfect the insemination device at the same time; Step five: insemination device insertion: insert the insemination tube into the vagina, press the insemination device to inject the semen into the uterus, and press the sow's back or use the smell of the boar to induce the sow during insemination with the insemination device, such as spraying the boar's urine, to promote uterine contraction and absorption of semen; Step six: health prevention and control: the reusable insemination device is strictly sterilized at high temperature; Step seven: record tracking: mark the insemination time and boar number, and confirm pregnancy by B-ultrasound or estrus observation after 21 days.

[0023] The application provides a kind of pig insemination device, including liquid storage bag 1 and the insemination catheter 2 connected at the output end of liquid storage bag 1, and the liquid storage bag 1 is a semen storage bag, which can inject the collected boar semen into the liquid storage bag 1 during insemination work, for subsequent insemination work, the front end of the insemination catheter 2 is connected with catheter head 3, the side wall of catheter head 3 is provided with liquid outlet, during subsequent insemination, extruding liquid storage bag 1, the semen can be injected into the uterus of sow from the side wall liquid outlet of catheter head 3 by using insemination catheter 2, the outer surface of insemination catheter 2 is sleeved with wrapping tube 4 in the middle, and the front end of wrapping tube 4 is fixed with protruding end 5, during insemination, catheter head 3, protruding end 5, wrapping tube 4 and insemination catheter 2 can be inserted into the vagina of sow together, and when the resistance feeling is obvious after insertion, the protruding end 5 is located outside the uterine mouth, and the catheter head 3 is inserted into the uterus, so that the semen can be directly injected into the uterus from the catheter head 3.

[0024] One end of wrapping tube 4 is communicated with liquid outlet valve 6 below, and liquid inlet valve 7 is arranged on one side of liquid outlet valve 6, and the lower parts of liquid outlet valve 6 and liquid inlet valve 7 are commonly communicated with water storage bag 8, which is made of hard rubber material with certain resilience, physiological saline is stored in water storage bag 8, and water outlet is formed on the side wall of the front end of wrapping tube 4, after wrapping tube 4 is inserted into the vagina of sow, water storage bag 8 can be extruded, at this time, the physiological saline in water storage bag 8 will be flushed into the water cavity in wrapping tube 4 through the one-way liquid outlet valve 6, and the liquid inlet valve 7 is in closed state, then flows out from the water outlet formed on the side wall of wrapping tube 4, which can flush the vagina and uterine mouth of sow, avoid the bacteria in sow's vagina polluting the semen and affecting the success rate of fertilization, and before wrapping tube 4 is inserted into the vagina of sow, water storage bag 8 can be extruded in advance, so that the physiological saline is injected into the water cavity in wrapping tube 4 in advance, to avoid air remaining in the cavity and affecting the inflation discomfort of vaginal flushing.

[0025] The wrapping tube 4 and the protruding end 5 are in sliding connection with the insemination catheter 2, the liquid outlet valve 6 and the liquid inlet valve 7 are connected with the pipe of the wrapping tube 4, which is a hard pipe, when the wrapping tube 4 performs the flushing of the physiological saline in the vagina, the water storage bag 8 can be held by hand and then moved forward and backward and rotated, so that the wrapping tube 4 and the protruding end 5 can be moved forward and backward and rotated on the insemination catheter 2 and in the vagina of the sow under the connection of the hard pipes of the liquid outlet valve 6 and the liquid inlet valve 7, so as to improve the effect of the flushing of the vagina and reduce the possibility of residual bacteria, and at the same time, the action of the flushing and reciprocating movement of the wrapping tube 4 and the protruding end 5 in the vagina can simulate the action during mating, which is beneficial to the fertilization reaction of the sow and is more beneficial to the success of fertilization.

[0026] After the flushing is completed, the water storage bag 8 is loosened, at this time, under the action of the gas pressure, the opening of the one-way liquid inlet valve 7 and the closing of the liquid outlet valve 6 will perform the action of suction from the water outlet on the side wall of the wrapping tube 4, and at the same time, the wrapping tube 4 is reciprocated, so as to suck the flushing liquid after the flushing into the water storage bag 8 in the reverse direction, avoiding the problem of secondary pollution caused by the residual flushing liquid in the vagina, and at the same time, the insemination catheter 2 and the catheter head 3 are still retained in the sow, which is convenient for subsequent insemination operation, so that the flushing and insemination can be processed at one time when the wrapping tube 4 and the insemination catheter 2 are inserted once, the efficiency is higher, and the problem of affecting pregnancy caused by the discomfort of the sow due to repeated separate operations is avoided.

[0027] The lubricating mechanism 10 is arranged inside and outside the wrapping tube 4, and the outer surface of the wrapping tube 4 is provided with a liquid adding port 20, lubricating liquid can be injected into the lubricating mechanism 10 from the liquid adding port 20, when the wrapping tube 4 moves forward and backward and rotates in the vagina, the lubricating mechanism 10 will be extruded by the vagina, so as to automatically release the lubricating liquid in the lubricating mechanism 10, so that the vagina wall can be lubricated when the wrapping tube 4 moves, avoiding the discomfort of the sow caused by excessive friction when the wrapping tube 4 moves, and the lubricating liquid stored in the lubricating mechanism 10 can be slowly released under the extrusion of the vagina, so as to be beneficial to prolong the effect and time of lubrication and avoid the trouble of repeatedly adding lubricating liquid from the outside.

[0028] The outer side of the catheter head 3 is provided with a sealing mechanism 9, and the sealing mechanism 9 is located in front of the convex end 5. When the catheter head 3 is inserted into the uterus, the sealing mechanism 9 will be attached to the outside of the uterine orifice. The sealing mechanism 9 is a gel plug made of water-absorbing and expanding material. When the sealing mechanism 9 is placed in the pig body, it can absorb water and expand by using body fluids and physiological saline during flushing of the wrapping tube 4. After absorbing water, the sealing mechanism 9 will separate from the catheter head 3. At this time, the expanded sealing mechanism 9 will be clamped at the uterine orifice to automatically seal the uterine orifice, thereby preventing the backflow of semen after insemination, thereby ensuring the success rate of insemination and pregnancy. After flushing and suction of the wrapping tube 4 are completed, squeeze the liquid storage bag 1, use the insemination catheter 2 to inject semen from the catheter head 3 into the uterus of the sow, and complete the fertilization work. Then, the insemination catheter 2 and the wrapping tube 4 are pulled out of the pig body. At this time, the sealing mechanism 9 of the gel plug will remain in the body to continue sealing. The sealing mechanism 9 of the gel plug is in a "soft gel" state after expansion, without obvious rigid structure, which can avoid the problem that the pipe is easily retained in the body for a long time and causes discomfort to the pig, thereby affecting the pregnancy effect. The irregular mucosa of the endocervical orifice can be attached after expansion of the gel plug, avoiding leakage caused by storage gaps, and without the need for manual control of the expansion degree, the fault tolerance is higher. The sealing mechanism 9 of the gel plug is made of natural degradation material and can be naturally degraded and removed or discharged with uterine peristalsis, without the risk of long-term retention.

[0029] The outer sides of the water storage bag 8 are provided with squeezing mechanisms 30. The squeezing mechanisms 30 can control the squeezing amount during squeezing of the water storage bag 8 for flushing work, thereby avoiding the problem that the flushing pressure is too large due to excessive squeezing force at one time, which can cause discomfort to the pig. The squeezing mechanisms 30 can also automatically position during squeezing to realize one-way squeezing and flushing work. The limiting can be released after flushing is completed, so that the water storage bag 8 can expand for suction work, thereby realizing controllable flushing and suction, and avoiding the problem that the water storage bag 8 is randomly and automatically rebounded to cause confusion in flushing and suction.

[0030] The wrapping tube 4 includes a fitting wall 41 arranged outside the insemination catheter 2. A through cavity 42 is arranged in the inner side of the middle part of the fitting wall 41. The insemination catheter 2 can pass through the through cavity 42, and the insemination catheter 2 and the fitting wall 41 can slide relative to each other. A layer cavity one 43 is arranged on the upper side of the fitting wall 41. The layer cavity one 43 is connected with the liquid outlet valve 6 and the liquid inlet valve 7. When the insemination catheter 2 is not inserted into the pig body, squeeze the water storage bag 8. The physiological saline in the water storage bag 8 is flushed into the layer cavity one 43 through the one-way liquid outlet valve 6 by opening the liquid outlet valve 6 and closing the liquid inlet valve 7.

[0031] The liquid outlet hole one 44 is arranged above one end of the sandwich cavity one 43, and the liquid outlet hole two 45 is arranged at the front end of the sandwich cavity one 43 and is communicated with the convex end 5. When the insemination catheter 2 is inserted into the pig body, the water storage bag 8 is squeezed, and at this time, the physiological saline in the sandwich cavity one 43 flows out from the liquid outlet hole one 44 and the liquid outlet hole two 45, thereby washing the vagina and the uterine mouth of the sow, avoiding the pollution of the bacteria in the sow's vagina to the semen, and affecting the success rate of fertilization. At the same time, the water storage bag 8 can be held during washing, and then the forward and backward movement and rotation are performed, so that the fitting wall 41 and the liquid outlet hole one 44 and the liquid outlet hole two 45 can move forward and backward and rotate on the insemination catheter 2 and in the sow's vagina, thereby improving the washing effect of the vagina and reducing the possibility of bacteria residue. At the same time, the fitting wall 41 moves back and forth in the vagina during washing, which can simulate the action during mating, is beneficial to the fertilization reaction of the sow, and is more beneficial to the success of fertilization.

[0032] After washing, the water storage bag 8 is released and rebounds, and at this time, under the action of air pressure, the opening of the one-way liquid inlet valve 7 and the closing of the liquid outlet valve 6 can perform the suction action in the reverse direction from the liquid outlet hole one 44 and the liquid outlet hole two 45, and the fitting wall 41 moves back and forth at the same time, thereby sucking the washing liquid after washing into the water storage bag 8 in the reverse direction, avoiding the problem of secondary pollution caused by the residue of the washing liquid in the vagina. At the same time, the insemination catheter 2 and the catheter head 3 are still stored in the pig body, which is convenient for subsequent insemination operation, so that washing and insemination can be processed at one time when the wrapping tube 4 and the insemination catheter 2 are inserted at one time, the efficiency is higher, and the problem of affecting pregnancy caused by the discomfort of the pig due to repeated operation is avoided. The inside of the liquid outlet hole one 44 and the liquid outlet hole two 45 is provided with the expansion piece one 46, which is expanded and opened only when water pressure is received, thereby preventing leakage.

[0033] The lubricating mechanism 10 includes a sandwich cavity two 101 arranged on the upper side of the through cavity 42, and the sandwich cavity two 101 is communicated with the liquid inlet port 20. The liquid inlet port 20 can fill the external lubricating liquid into the sandwich cavity two 101. The upper surface of the sandwich cavity two 101 is provided with a liquid outlet hole four 102, and the inside of the liquid outlet hole four 102 is fixed with an expansion piece two 103. When the wrapping tube 4 moves forward and backward and rotates in the vagina, the sandwich cavity two 101 is squeezed by the vagina, thereby automatically releasing the lubricating liquid in the sandwich cavity two 101 from the liquid outlet hole four 102 to the outer surface of the wrapping tube 4. In this way, the vagina wall can be lubricated by the lubricating liquid when the wrapping tube 4 moves, thereby avoiding the discomfort of the pig caused by excessive friction when the wrapping tube 4 moves. The lubricating liquid stored in the sandwich cavity two 101 can be slowly released with the squeezing of the vagina, thereby being beneficial to prolonging the lubricating effect and time and avoiding the trouble of repeatedly adding lubricating liquid from the outside.

[0034] To solve the technical problem that the success rate of insemination is affected by the fact that the sow is often dependent on an external air source to prevent the outflow of semen after insemination, thereby causing the sow to be uncomfortable, as shown in Figures 2-8 The preferred technical solutions are as follows: The plugging mechanism 9 comprises a fixing ring 91 clamped on the outer surface of the insemination catheter 2, and the inner surface of the fixing ring 91 is fixed with a clamping head 99, the fixing ring 91 is clamped on the outer surface of the insemination catheter 2 by means of the clamping head 99 in the form of a hemispherical protrusion, and the surface of the fixing ring 91 is provided with a fixing hole 92, and the fixing hole 92 is on the same horizontal line as the liquid outlet hole two 45, when the physiological saline flows out of the liquid outlet hole two 45, the physiological saline will flow into the fixing hole 92.

[0035] The inside of the fixing hole 92 is fixed with a fixing block 93, and one side of the fixing block 93 is fixed with a gel plug sleeve 94, the outer surface of the gel plug sleeve 94 is provided with a coating film 95, the fixing block 93 and the coating film 95 are hydroxypropyl methyl cellulose, and the coating film 95 is a polyacrylic acid sodium or sodium alginate gel material, when the fixing block 93 in the fixing hole 92 is washed by the physiological saline, it will automatically dissolve, so that the gel plug sleeve 94 is separated from the fixing ring 91, and the coating film 95 will also be dissolved under the influence of body fluid and physiological saline, at this time the physiological saline will act on the gel plug sleeve 94, so that the gel plug sleeve 94 absorbs water and expands rapidly, and the gel plug sleeve 94 is in the form of a protrusion, the front end of the protrusion will be embedded into the cervix when the catheter head 3 is inserted into the uterus, and the back side of the protrusion will be left outside the cervix, at this time the gel plug sleeve 94 continuously absorbs water and expands, to realize automatic plugging of the cervix, avoid backflow of semen after insemination, and thus ensure the success rate of insemination.

[0036] The lower side of the gel plug sleeve 94 is provided with a flow-through groove 96, and the flow-through groove 96 is arranged on the surface of the insemination catheter 2, one side of the flow-through groove 96 is provided with a liquid outlet hole three 97, and the liquid outlet hole three 97 is arranged on the abutting wall 41 and penetrates the cavity 42, and the cavity 42 communicates with the flow-through groove 96 through the liquid outlet hole three 97, when the physiological saline flows out of the cavity 42, the physiological saline will flow into the flow-through groove 96 through the liquid outlet hole three 97, so that the physiological saline can better act on the gel plug sleeve 94, so that the gel plug sleeve 94 can absorb water and expand more quickly.

[0037] The inner middle part of the gel plug sleeve 94 is provided with a sealing sheet 98, and the sealing sheet 98 is annularly provided with a plurality of groups about the gel plug sleeve 94. When the insemination catheter 2 is extracted after insemination, the sealing sheet 98 can close and block the center hole of the gel plug sleeve 94, and the sealing sheet 98 is also made of sodium polyacrylate or sodium alginate gel material and can absorb water to swell, so as to avoid the leakage of semen caused by the gap of the gel plug sleeve 94. Meanwhile, the gel plug sleeve 94 is in a soft gel state after swelling and has no obvious rigid structure, so as to avoid the problem that the pig is easily caused to be uncomfortable due to the long-term storage of the pipeline in the body, thereby affecting the pregnancy effect. In addition, the gel plug sleeve 94 can be attached to the irregular mucosa of the internal orifice of the uterus after swelling, so as to avoid the leakage caused by the storage gap, and the expansion degree does not need to be manually controlled, so that the fault tolerance is higher. Meanwhile, the gel plug sleeve 94 is made of a natural degradation material and can be naturally degraded and removed or discharged with the uterine peristalsis, so that there is no risk of long-term retention.

[0038] In order to solve the technical problem that the automatic rebound of the capsule during flushing will cause confusion of flushing and suction, the following preferred technical solutions are provided as shown in Figure 1 、 Figure 3 、 Figure 9 and Figure 10 . The extrusion mechanism 30 includes two groups of extrusion plates 301 fixed on both sides below the water storage bag 8. The upper surface of one side of the extrusion plate 301 is fixed with a fixed plate one 302, and the upper surface of the other side of the extrusion plate 301 is fixed with a fixed plate two 304. The extrusion plate 301 is made of elastic material, and only the extrusion plates 301 on both sides need to be extruded when the water storage bag 8 is extruded.

[0039] The surface of the fixed plate one 302 is fixed with an arc-shaped rack 303, the surface of the fixed plate two 304 is provided with a through groove 305, the temple part below the through groove 305 is installed with a clamping tooth block 306, the bottom of the clamping tooth block 306 is installed with a spring seat 307, the clamping tooth block 306 is elastically connected with the fixed plate two 304 through the spring seat 307, one side of the clamping tooth block 306 is fixed with a pressing block 308. When the water storage bag 8 is extruded by the extrusion plate 301, the arc-shaped rack 303 will be inserted into the through groove 305 with the extrusion, so that the arc-shaped rack 303 is clamped with the clamping tooth block 306. The spring seat 307 can realize dynamic meshing and separation during extrusion, so as to realize controllable extrusion amount, avoid the problem that the flushing pressure is too large due to the excessive extrusion force, and cause the pig to be uncomfortable. Meanwhile, the clamping tooth block 306 can be automatically positioned during extrusion, realize one-way extrusion flushing work, and the limit of the clamping tooth block 306 can be released by pressing the pressing block 308 after flushing, so that the water storage bag 8 can expand for suction work, thereby realizing controllable flushing and suction, and avoiding the problem that the water storage bag 8 is randomly and automatically rebounded to cause confusion of flushing and suction.

[0040] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting; it is not intended to exclude myriad other embodiments of the present application that other inventors can develop based on the same general inventive concepts embodied by the described embodiments. That is, although the present application is described in terms of particular embodiments and implementations, it is to be understood that the terminology used is for the purpose of descriptive clarity and that it is intended to be limited only by the words recited in the appended claims. It is to be understood that the terms such as first and second, etc., merely are used to differentiate one from another without necessarily requiring or implying any actual relationship or order between such entities or operations. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0041] While the embodiments of the application have been shown and described herein, it is to be understood that the application is not limited to these embodiments. Rather, many modifications, changes, substitutions, and alterations can be made thereto without departing from the spirit and scope of the present application as defined by the appended claims and their equivalents.

Claims

1. A method for breeding pigs, characterized in that: It comprises the following steps: S1: boar selection: select healthy boars with standard semen quality, record estrus cycles, and determine the optimal insemination time through behavioral observation or B-ultrasound; S2: semen collection and processing: collect boar semen using a dummy sow and a semen collection cup, dilute after microscopic detection, and store in a 17℃ incubator for standby; S3: sow fixation: use a limiting fence or sedation measures, and ensure operation safety if necessary; S4: cleaning and disinfection: wash the external genitalia with physiological saline to avoid contamination, and disinfect the insemination device; S5: insertion of the insemination device: insert the insemination tube into the vagina, press the insemination device to inject semen into the uterus, and use the insemination device to induce the sow by pressing the sow's back or the odor of the boar, such as spraying boar urine, to promote uterine contraction and absorption of semen; S6: health prevention and control: strictly high-temperature disinfect the reusable insemination device; S7: record tracking: mark the insemination time and boar number, and confirm pregnancy after 21 days through B-ultrasound or estrus observation.

2. A boar insemination device for carrying out the method of breeding boars according to claim 1, comprising a reservoir (1) and an insemination catheter (2) connected to the output of the reservoir (1), characterized in that: The front end of the insemination catheter (2) is connected with a catheter head (3), the middle of the outer surface of the insemination catheter (2) is sleeved with a wrapping tube (4), and the front end of the wrapping tube (4) is fixed with a protruding end (5); One end of the wrapping tube (4) is connected with a liquid outlet valve (6) below, one side of the liquid outlet valve (6) is provided with a liquid inlet valve (7), the lower parts of the liquid outlet valve (6) and the liquid inlet valve (7) are commonly connected with a water storage bag (8), the wrapping tube (4) and the protruding end (5) are slidably connected with the insemination catheter (2), a lubricating mechanism (10) is arranged on the inside of the wrapping tube (4), a liquid inlet opening (20) is mounted on one side of the outer surface of the wrapping tube (4), a plugging mechanism (9) is arranged on the outside of the catheter head (3), and the plugging mechanism (9) is located on the front side of the protruding end (5), and extrusion mechanisms (30) are arranged on the two sides of the outside of the water storage bag (8).

3. A boar insemination device according to claim 2, characterized in that: The wrapping tube (4) comprises a fitting wall (41) arranged on the outside of the insemination catheter (2), and a through cavity (42) is arranged in the middle of the inner side of the fitting wall (41), a first interlayer cavity (43) is formed in the upper side of the fitting wall (41), and the first interlayer cavity (43) is in communication with the liquid outlet valve (6) and the liquid inlet valve (7).

4. A boar insemination device according to claim 3, characterized in that: An outlet hole one (44) is formed in the upper part of one end of the first interlayer cavity (43), an outlet hole two (45) is formed in the front end of the first interlayer cavity (43), and the outlet hole two (45) is in communication with the protruding end (5), and expansion pieces one (46) are arranged in the interiors of the outlet hole one (44) and the outlet hole two (45).

5. A boar insemination device according to claim 4, characterized in that: The lubricating mechanism (10) comprises a second interlayer cavity (101) arranged on the upper side of the through cavity (42), the second interlayer cavity (101) is in communication with the liquid inlet opening (20), an outlet hole four (102) is formed in the upper surface of the second interlayer cavity (101), and expansion pieces two (103) are fixed in the interior of the outlet hole four (102).

6. A boar insemination device according to claim 5, characterized in that: The plugging mechanism (9) comprises a fixing ring (91) clamped on the outer surface of the insemination catheter (2), and the inner surface of the fixing ring (91) is fixed with a clamping head (99), the surface of the fixing ring (91) is provided with a fixing hole (92), and the fixing hole (92) is on the same horizontal line as the liquid outlet hole two (45).

7. A boar insemination device according to claim 6, characterized in that: The inside of the fixing hole (92) is fixed with a fixing block (93), one side of the fixing block (93) is fixed with a gel plug sleeve (94), and the outer surface of the gel plug sleeve (94) is provided with a coating film (95).

8. A boar insemination device according to claim 7, characterized in that: The lower side of the gel plug sleeve (94) is provided with a flow-through groove (96), and the flow-through groove (96) is arranged on the surface of the insemination catheter (2), one side of the flow-through groove (96) is provided with a liquid outlet hole three (97), the liquid outlet hole three (97) is arranged on the abutting wall (41), and the through cavity (42) is communicated with the flow-through groove (96) through the liquid outlet hole three (97), and the inner side of the gel plug sleeve (94) is provided with a plurality of groups of sealing pieces (98) arranged annularly about the gel plug sleeve (94).

9. A boar insemination device according to claim 8, characterized in that: The extrusion mechanism (30) comprises two groups of extrusion plates (301) fixed on the lower sides of the water storage bag (8), and the upper surface of one side of the extrusion plate (301) is fixed with a fixed plate one (302), and the upper surface of the other side of the extrusion plate (301) is fixed with a fixed plate two (304).

10. A boar insemination device according to claim 9, characterized in that: The surface of the fixed plate one (302) is fixed with an arc-shaped rack (303), the surface of the fixed plate two (304) is provided with a through groove (305), and the temporal part below the through groove (305) is provided with a clamping tooth block (306), the bottom of the clamping tooth block (306) is provided with a spring seat (307), and the clamping tooth block (306) is elastically connected with the fixed plate two (304) through the spring seat (307), and one side of the clamping tooth block (306) is fixed with a pressing block (308).

Images