Rescue method when sheep is difficult to give birth
The rescue principle for sheep dystocia is to remove the fetus, save the ewe, and strive to achieve both mother and child; protect the fertility of the ewe and avoid infection and injury of the birth canal. In the process of midwifery, attention should be paid to strict disinfection. When correcting the abnormal posture of the fetus, try to push the fetus back into the womb. When pulling out the fetus, you should follow the efforts of the ewe to keep the perineum. When the birth canal is dry, in order to pull out or push back the fetus, a lot of lubricants such as soapy water or oil should be poured into the birth canal. If surgery is needed to assist delivery or cesarean section, it should be done as soon as possible. The preoperative examination must be thorough, the cause of dystocia must be correctly judged, and corresponding rescue measures must be taken decisively.
Common dystocia is divided into three categories: obstetric dystocia, birth canal dystocia and fetal dystocia. The first two types are caused by maternal abnormalities, such as ewes contracting and weakening, premature contraction and water breaking, uterine twirling, vaginal and vulva stenosis, etc.; the latter is caused by fetal abnormalities, such as fetal oversize , Fetal malformations and developmental abnormalities.
The common dystocia and assisted delivery methods of ewes are introduced as follows:
The contraction and effort are weak, because the uterus and abdominal wall of the ewe are less contracted during delivery, the time is short and the intensity is not enough, so that the fetus cannot be delivered. If you know that the cervix is fully opened, the fetal direction, position, and fetal position are normal, and there is no stenosis or other abnormalities in the pelvis, if the fetus cannot be touched with your hands and instruments, you can use oxytocin to stimulate uterine contractions. Usually oxytocin is injected intramuscularly or subcutaneously, 5-10 international units each time, once every half an hour. If induction of labor is not effective, a cesarean section is required.
When the fetus’s head and neck are bent or bent, the forelimbs are flexed or the shoulders are forward, the delivery worker disinfects his hands, extends into the vagina to push the fetus into the uterine cavity, straighten the head, and straighten the forelimbs to make The nose, lips, and two forelimbs extend into the soft birth canal, and then pull out the fetus.
If the fetus is sitting on the front, while pushing the fetus into the uterine cavity, hold the two hind hooves, straighten it into the soft birth canal, and then pull out the fetus.
If the ewe is found to be uterine torsion, vaginal stenosis, pelvic stenosis or deformity, etc., a cesarean section is required. Before the caesarean section, the veterinarian should strictly disinfect the hands, arms, instruments, ewes, and the site as required. The surgical site should be selected between the anterior knee wall and the external mammary vein. Cut the skin and muscle layer, cut open the peritoneum, the incision should be 15-20 cm. After opening the abdominal cavity, lift the greater curvature of the uterus out of the abdominal wall incision, incise the uterine wall along the greater curvature, draw out the amniotic fluid, and take out the fetus. Peel off the fetus around the uterine incision, and place 80 to 1 million IU penicillin in the uterine cavity. Then the uterine incision was sutured and placed into the abdominal cavity, and 200,000 international units of penicillin was placed in the abdominal cavity. Finally, the peritoneum, muscle layer and skin are sutured. Pay attention to the care of the ewe after the operation to prevent infection.
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