"Bionic" insemination method of operation

The first step: pressure. The general criteria for estrus sows insemination time are: 24-48 hours after estrus, 48 ​​to 72 hours for middle-aged sows, and 72-96 hours for young sows. The exact criterion for “pressing” is: pressing the back of the sow with your hand, and if the sow stands still, you can inseminate. The boar climbs across the sow when the pressure is equal to the position. When inseminating, the assistant is also asked to press down on the back.

The second step: plug in. First, try to make the sows drain big and urine. Then wash the sow's genital area with warm water or 0.1% potassium permanganate solution (pink) and wipe dry. Then insert the end of the sterilized sperm into the semen. The mouth of the bottle is inserted into the uterus body by alternately pulling, tweeting, and turning three movements in a state of high front and low back. When the insertion depth is equal to the midpoint of the two hip joints of the sow to the length of the genitalia, the first sow is generally not more than 20 cm. The older the insertion, the deeper it is inserted. Before inserting it, it must be known. If it is too shallow, it cannot be inserted. It may be able to withstand the wall of the vagina or the cervix and must be reinserted at a different angle.

The third step: mention. The semen bottles were poured 15 to 20 cm from the sow's pussy.

The fourth step: pumping. The anaesthesia of the anaesthesia in the range of 2 to 4 centimeters is gentle and uniform. It can be seen that every time the blood is drawn, the semen bubble in the bottle rises and it is inhaled once (about 2 ml). This twitches 2 or 3 times, semen Can be inhaled 2 ~ 3 times (4 ~ 6 ml), and then put down the semen bottle, stop twitching, hand movements, turn the insemination device for a moment, if there is no semen back, you must extend the time, transfer the insemination device time . Individual sows can first lose 10 ml, pull out the sperm, and lose it every 10 minutes.

Step 5: Pull up. After the insemination is completed, fix the transfusion device and lower the semen bottle. If there is no semen returned to the semen bottle, the spermatozoa can be pulled out slowly; then the sow is guaranteed for about 10 minutes while observing the vulva, if there is no semen Outflow, can be used to beat the sow buttocks and release it.


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