Castration method of male Xiang Pig raising Xiang Pig

Xiang Pig castration is not reserved for breeding male and female Xiang Pig, in order to make its temperament docile, easy to breed and improve the quality of meat, generally at 2. 5%. Castration (castration) can be performed during 5-3 months.

Castration method of ① male Xiang pig. Male Xiang pigs should generally be castrated sooner rather than later, and castration can be performed between 15-30 days after weaning. Castration at too young age hinders its normal growth and development; too old will increase the difficulty of the operation. After 15 days of weaning, Xiang pigs basically adapt to the new environment and can choose sunny days without strong winds for surgery.

Before castration, Xiang pigs should be examined for health, mainly to determine whether there are abnormal changes in body temperature, respiration, heart rate and vulva. If they are found to be in poor health or have fallen ill, castration surgery is not suitable for the time being. Generally stop feeding for half a day before castration and, if necessary, inject 1000-5000 units of tetanus antitoxin after castration. There should also be 50, 000-100000 units of penicillin, scattered on castrated wounds. The surgical instruments generally include 1 scalpel, 2 hemostatic forceps, 1 scissors, 1 tweezers, No. 4 suture and so on. Soak the surgical instruments with alcohol solution for half an hour or boil for half an hour before operation. In addition, 3-4 pieces of sterilized gauze should be prepared.

In order to reduce the pain of Xiang pigs, ketamine can be used for anesthesia, the dose is 5-15 mg per kilogram of body weight, and the effect occurs 3-5 minutes after intramuscular injection. Sodium thiopental can also be used in a 25% solution of 20 mg / kg body weight with sterilized distilled water. Intravenous injection. After carefully cutting off the scrotum and its surrounding hairs before the operation, disinfect it with 2% iodine and apply 75% alcohol.

The operation is usually performed by two people, one as the surgeon and the other as the assistant. The anesthetized pig lying on its back in Baoding, use a piece of sterilized gauze (cut about 4-8 cm from the middle) to cover the perineum as a scarf to expose the scrotum. The operation can use intrathecal castration to fix one side of the testis with the left thumb and index finger to tighten the skin of the scrotum. Holding a scalpel in the right hand, along the longitudinal axis of the testis and parallel to the suture line, cut the scrotum and the total sheath about 2-3 cm at a time to extrude the testis; cut the scrotal ligament, separate the testicular mesentery, push the scrotum and the total sheath toward the abdominal wall, expose the spermatic cord, and then use the thread for double single knot ligation; hand pull the tail line, about 0. Cut the spermatic cord at 3 cm; when no bleeding is observed, disinfect the broken end with 2% iodine, cut the tail line again, and retract the seminal element. Using the same method, ligate, cut and disinfect the spermatic cord on the other side, then sprinkle the prepared antibiotics in the wound of the scrotum to remove the scarf. Local disinfection is fine. After the operation, the anaesthesia is eliminated, and after the pig is fully awake, fresh water should be given and food should be given after 2-3 hours, but the food intake should not be too much, and then gradually return to normal food intake. The wound should be kept dry after operation. generally, after 6-7 days, the scrotum atrophied and the wound healed. If 2-3 days after the operation, local scleroma, accompanied by secretion outflow, touch sensitivity, elevated body temperature and other reactions, should be diagnosed and treated in time. When local infection, can be treated with antibiotics.

Method of ovariectomy in ② sows. The preparation for ovariectomy of female Xiang pig is basically the same as that of male Xiang pig, but the operation site is different. Let the anesthetized pig lie on its back on the operating table. The site of the operation is 2-3 cm behind the navel of the midline of the abdomen, with this as the center, within the size of about 10 cm * 5 cm, first disinfect with 2% iodine, and then smear with 75% alcohol. After covering the surgical site with a scarf, the surgeon fixed the skin of the surgical site with the index finger and thumb of the left hand. Holding a knife in your right hand, cut the skin about 3-4 cm at a time along the midline of the abdomen. after fully stopping the bleeding, cut open the subcutaneous fat and rectus abdominis and cut the peritoneum. Then reach into the index finger and look for the ovary and uterine horn along the abdominal wall to the dorsal side of the entrance to the pelvis. The ovaries are generally flat and oval, hard and elastic. When touching the ovary, clip it between the index finger and the abdominal wall, pull it to the skin incision, pinch it with the index finger and thumb, and ligate it with the No. 4 thread. In order to prevent slippage, needle thread can be pierced from the base of the ovary, double single knot ligation, and then cut off the ovary; if there is no bleeding, the tail can be cut and sent back to the abdominal cavity. Use the same method to find the contralateral ovary, or look for the contralateral ovary along the uterine horn where the ovary has been cut off. After finding it, ligate and cut it in the same way. Then recheck once, if there is no bleeding, close the abdominal cavity, suture rectus abdominis and peritoneum continuously, sprinkle 200000 units of penicillin, suture the skin with nodules, and disinfect with 2% iodine.

After the operation, don't let the Xiang pig go to the pool and be drenched by Rain Water. You should feed some nutritious food. The wounds of most Xiang pigs need to heal in 1 week, and the stitches should be removed in time. If infection is found, it should be treated with antibiotics in time.

In addition, there is also hip ovariectomy, which is suitable for surgery on larger Xiang pigs. The method is that after Baoding Xiang pig is disinfected, the knife is held in the right hand, and then the location is determined, and the skin is cut into a 2-3 cm long semilunar incision. The abdominal muscle and peritoneum were punctured with the index finger of the left hand, and extended into the abdominal cavity and along the abdominal wall to both sides of the top of the pelvic entrance. When the left ovary was touched, the index finger was used to hook the ovarian mesentery and hook outward along the abdominal wall. When the ovary is pulled to the incision, the ovary and uterine horn can also be hooked out at the same time with the knife handle, and the ovary can be removed after ligating the ovarian mesentery with sutures. Then reach into the abdominal cavity, touch the right ovary through the lower rectum to the right, hook out, ligate and remove the ovary in the same way. Then suture, disinfection and other surgical treatments were carried out.