What are the signs of the sow before delivery?

Before parturition, the boundary will gradually appear between the base of the breast and the abdomen of the sow, and the bone disc ligament will soften gradually. Three days before delivery, the nipples will gradually open outward, the skin is tense and red, the two pairs of nipples in the middle can squeeze out a little transparent fluid, and the sow's vulva gradually swells and begins to flush. 12 hours before delivery, the number of micturition increased, the volume of micturition gradually decreased, frequently appeared from time to time to lie down, temperament is very irritable, appetite began to gradually decline, or even no appetite.

Signs of sows before parturition

1. Changes of breasts and nipples

The main results are as follows: (1) the boundary will gradually appear between the base of the breast and the abdomen of the sow about 15-20 days before parturition, and the breast begins to swell and sag near the due date.

(2) the nipple of the sow will gradually open outward about 3 days before parturition. If the nipple on both sides is swollen strongly, the nipple is arranged in the shape of An and shines, the skin is tense and red, and occasionally there is a small amount of grass on the sow. It means that the sow is about to give birth.

2. The change of milk in nipple

The main results are as follows: (1) about 3 days before delivery, the two pairs of nipples in the middle can extrude a little bit of transparent liquid, and about 1 day before delivery, a few drops of white colostrum can be extruded.

(2) A few drops of white colostrum can be squeezed out from the front nipples of the sow a few hours before parturition, and when the last pair of nipples can squeeze out thick colostrum, it means that the sow is about to give birth.

3. Changes of vulva

About 3-5 days before parturition, the vulva of the sow gradually swells and begins to flush. A few hours before delivery, most of the sows will discharge mucus. When the sow lies on its side, the tail begins to swing, and the hilum of the liver begins to fall. Most of the sows will shed a small amount of red fetal fluid, indicating that the sow is about to give birth.

4. The change of bone disc.

The ligament of the bone disc of the sow softens gradually about 7-14 days before parturition, until 12-36 hours before delivery, the posterior edge of the ligament begins to become very soft, and the shape gradually disappears near the tail root, until the tail root collapses, indicating that the sow is about to give birth.

5. Frequent defecation and urination

Sows in the 6-12 hours before delivery, soft feces in the shape of persimmon, the number of micturition increased, is about to give birth, its feces will be from large to small, the frequency of urination will gradually increase, the amount of urination will gradually become less.

6. Mental state

Sows are in a bad state of mind about 12 hours before childbirth, such as lying up and lying down frequently, indicating that they are going to give birth soon.

7. Appetite

Sows begin to lose their appetite about 12 hours before giving birth, or even lose their appetite, which means they are going to give birth soon.

2. Preparation before childbirth

1. Delivery room

(1) the environment of the sow delivery room should be dry, clean, ventilated, sunny and warm, the air quality should not exceed 65% of the humidity, and the suitable temperature should be about 18-23 ℃.

(2) if the temperature is low in winter, the pigsty should install heating equipment and piglet incubator to ensure the survival rate of piglets.

2. Tools

(1) prepare production appliances, such as rags, gauze, scissors, lamps and disinfectants in advance.

(2) midwives should change clean clothes, cut their nails, wash their hands with soap, and disinfect them with disinfectant water.