Sow small pick knife method

Sow gilts about 35 days old (10 kg) should be castrated, fasting for half a day before operation, disinfection of the surgical site, and then direct incision of peritoneum, the incision only needs to open 8 mm, when ascites gush out, then both ovaries and uterus should be removed, and iodine tincture should be applied to the incision. The key to the success of the small pick method lies in finding the correct surgical site, and the technique needs to be skilled. Castration with this method can avoid wound infection and eliminate tetanus hazards.

Sow Picks Down Knife Technique

Except for gilts, when sows grow to a certain stage, they should be castrated, which is conducive to fat growth, so they can be castrated by small picking method. This method can avoid wound infection and eliminate tetanus harm. The incision of the operation site only needs to be opened by 8 mm, and the operation time is about 1 minute, and it does not affect the feeding, feeding and action of sows.

1. Select piglets

Select 35-day-old gilts weighing about 10 kg and fast for half a day before surgery.

2. Baoding

The left hand of the operator should lift the left hind limb of the sow to urge the abdominal intestine to move forward, then the right hand should pinch the left knee fold to make the sow fall to the ground on the right side, then the right foot should step on the left neck of the sow, the right hand should support the knee joint to make the left hind limb of the sow straight backward, the sow body should be in a semi-supine posture, and finally the left foot should step on the sole of the left hind limb.

3. Surgical site

On the left lower abdomen of sow, the place where coarse hair and fine hair meet, and the opposite place to hip tubercle, the position is 2D3cm outside the second last nipple on the left side.

4, surgical method

(1) Routine disinfection of the surgical site, the middle finger of the left hand against the right hip tubercle, thumb pressure slightly inside the surgical site, two fingers in a straight line, the tighter the pressure will be closer to the ovary, the higher the success rate of surgery.

(2) Hold the scalpel firmly in your right hand, control the depth of the blade with your thumb, middle finger and index finger, and cut the skin vertically with the tip of the knife. It is advisable to make a vertical incision. The skilled person can directly cut the peritoneum, and the beginner can use the handle to smash the membrane belly.

(3) After incision of peritoneum, there will be a small amount of ascites gushing out. At this time, it is necessary to expand the surgical incision slightly outward. When the sow howls, with the increase of abdominal pressure, the uterine horn will also pour out.

(4) If it does not come out, the thumb of the left hand must press it tightly. The handle can be put into the abdominal cavity for arc sliding. With the sow howling, the abdominal pressure rises sharply to make the uterus gush out. Then the right hand pinches the detached ovary and uterine horn, and then the left hand pinches it. Use the right hand to press the abdominal incision.

(5) When both ovaries and uterus are pulled out, the uterus can be cut off with a knife and both ovaries and uterus are removed.

(6) The incision should be coated with iodine tincture, and then lift the hind limbs of the sow, and the body can be released to allow the sow to move freely.

5. Precautions

The key to the success rate of the small pick method lies in the surgical site. Generally, after incision, pink is seen in the small intestine, indicating that the incision is relatively forward, while white is seen in the bladder, indicating that the incision is relatively backward.