Artificial insemination insemination encounters special conditions

Return semen

In the insemination process, attention should be paid to the observation of the flow of semen. If the semen level in the bottle or bag drops rapidly, there may be semen backflow because the flow of semen through the cervical canal is not rapid. When you see semen flow out of the vulva, you should lower the infusion bottle (bag), let the semen return to the infusion bottle (bag), and then slightly raise the infusion bottle (bag). If reflux still occurs, try inserting the infusion catheter forward and check that it is locked in the cervical canal. If the insemination catheter still cannot be locked, the insemination catheter should be withdrawn for 5 to 10 minutes. After the sow's cervical canal is relaxed, it can be inserted again.

2. Poor flow of semen

The cause of poor sperm flow may be: the leading end of the insemination catheter is blocked by the uterine mucous membrane; the sow is under stress, or does not give enough stimulation before insemination, does not produce contractions; the location of the semen bag (bottle) is too low; Because the semen bottle is too hard, negative pressure is formed on the upper part of the semen bottle and affects the flow of semen.

The solution is: gently move the infusion catheter forward and backward, so that the foam head away from the blockage, when you see the smooth flow of semen, you have left the blockage, if you confirm the foam head locked in the cervix, you can slightly back to the top The vas deferens keeps the foam head at a certain distance from the mucous membrane that obstructs the vas deferens; the sow should be protected from any stress before insemination, and it takes several minutes before insemination to massage and stimulate the sensitive part of the sow if it is at the start of insemination. When the semen flow is not smooth, the infusion bottle (bag) can be squeezed, so that the insemination catheter is filled with semen and part of the semen enters the uterus, which is also conducive to stimulation of contractions; if the semen bottle (bag) position is too low, Raised properly, if semen does not flow after semen has flowed out of the semen, the semen can be gently squeezed. If necessary, remove the semen and enter the air before connecting it to the insemination tube.

3. Sow urination when the insemination catheter is inserted

Urine can kill sperm, therefore, contaminated insemination catheter should be discarded and replaced with a new insemination catheter. This is rare in the actual artificial insemination process.

4. The insemination catheter cannot be extracted

If pulling the spermatozoa does not move, do not pull it tightly to prevent the plastic tube from separating from the foam head and causing the foam head to stay in the cervical canal. The resistance was very large when pumped out, indicating that the sow was still in a state of excitement. The cervical canal stuck the foam head tightly and could be observed for more than ten minutes. After the sow’s sexual excitement subsided, the insemination catheter can be withdrawn. If the foam head has fallen into the cervical canal, it will not generally cause too much of a problem. The sow will discharge it after a period of time.

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