Cow artificial insemination method

Bovine artificial insemination by rectum grasp cervical insemination method, deep in the cervix or uterus or uterine horn insemination is appropriate. The method is: before insemination, the insemination equipment is thoroughly cleaned and disinfected, and the metal insemination gun is disinfected in a high-temperature drying pot. The cows identified by the estrus identification and confirmed to be timely timing of insemination should be brought into the breeding rack and fixed to the side, and the anus and genital area of ​​the cow should be wiped clean with a pre-prepared tissue (do not rinse with water). , and use a small group of tissue to open the vulva, the rigger must cut into the rectum hand (many left hand) nails short, flat, wear protective gloves, apply lubricant (usually soap), palms down into the wedge into In the rectum, if the rectum is filled with cow dung and the handle is cup-shaped, then force it back and enclose it. Be careful not to take it out of the rectum to prevent the air from running into the rectum. If this happens, gently squeeze the rectum. Make it shrink to discharge air, when the rectum shrinks, the hand must be wedge-shaped, so that the contraction wave can be successfully formed to pass through, find the cervix across the wall of the intestine and gently hold it, and the other hand has been installed fine tube frozen The fine insemination gun is inserted into the vulva at an angle of 45 degrees, and the insemination gun enters the vagina 5 to 10 cm. After avoiding the urethra, it is inserted in parallel to the cervix. When the insemitant is delivered to the cervix, there is a kind of tip. bump The feeling of sandstone. At this time, the hand inside the rectum moves forward, with the index finger against the angle between the groove, used to determine the position of the front end of the insemination gun, while the left and right hands cooperate, gently turn the infusion gun, so that it slowly into the cervix. There are 3 to 4 transverse folds in the cervix, so do not insert it roughly so as not to damage the uterus. The cervix is ​​3 to 5 cm long, and the insemination gun can pass through the cervix (that is, just after entering the uterus) or after inserting into the cervix 2/3. Insemination should be high and low before the insemination gun, the insemination gun slightly back, while injecting semen, slowly withdraw the insemination gun, while the hand inside the rectum inside the homeopathic massage 1-2 times, remove When the insemination gun is inspected, if there is a large amount of semen remaining in the insemination gun or the microscopic examination of semen remaining in the fine tube is zero, the insemination should be resumed. In the grasp of the cervix should pay attention to the location should be appropriate, it is conducive to the cooperation of both hands, neither reliable nor too late, otherwise it is difficult to insert the insemination device into the deep cervix. In addition, when the cervix is ​​grasped, the cervix should not be pulled upwards to facilitate bending of the cervix, so that the vas deferens cannot easily pass through the cervix, and the cervix cannot be pulled outwards but should be pulled slightly inward so that the vas deferens can be inserted into the cervix. Outside the mouth.

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