What are the signs before the sow gives birth?

Among all the domestic animals in China, the breeding area of pigs is the largest. It is a kind of meat that consumes the most every year, and is indispensable for many people in every meal. When we raise pigs, we should pay attention to observe the growth status of pigs and do a good job in management. Especially during the parturition period of sows, we need to understand the signs of sows before delivery. So what are the signs before the sow gives birth? Let's take a look at it with the editor.

First, the omen before delivery

The gestation period of sows is usually about 4 months, and there are many signs before giving birth. With the passage of time, with the continuous development of fetal pigs, pregnant sows will first have many physiological changes. For example, the breasts are gradually dilated, the birth canal is becoming more and more relaxed, and the genitals are gradually red and swollen, which are all signs of sows before giving birth. The main thing is to judge according to time:

1. Half a month before delivery

There are signs when sows give birth in the first half of the month. In sows at this time, the breasts will gradually expand from the back to the front, and there will be a clear distinction between the base of the breast and the belly. Then, a week before delivery, the nipples begin to separate in a figure-of-eight direction.

2. Five days before delivery

Then five days before the sow gives birth, the breasts change significantly, expanding rapidly and showing a red glow. Gently squeeze the back of the breast will have a small amount of milk flow.

3. Three days before delivery

Then two days later, three days before giving birth, all the actions of the sows will become very steady and cautious. The temperature of the breast increases gradually, and the nipple begins to secrete milk.

4. The day before delivery

By the last day before giving birth, the milk secreted by sows will become very thick, mainly yellow. The vulva of the sow is gradually swollen, the color is red and purple, and mucus is gradually secreted from the vagina. After the first 10 hours, the sow rises and lies frequently, fidgeting, and the vulva is swollen and red.

5. Two hours before delivery

After the last two hours before delivery, the sows showed extreme unease. Breathing is very short of breath, keep walking, and urinate more frequently. Yellowish mucus will flow from the vulva, and when the sow lies on the ground, the limbs straighten and the contraction gradually shortens, the amniotic fluid will flow out and the first young pig can be born.

Second, the length of delivery time of sows

The delivery time of sows is usually not very long. Under normal circumstances, the delivery time of sows is generally about 3-5 hours, which should be determined according to the litter size. Generally, the interval between the production of each piglet is about 10-20 minutes. If the production time exceeds 6-8 hours and the average interval is more than 40 minutes or more, then the labor process is too long.

The above is a brief introduction of what omens there are before the sow gives birth. That's all for today's introduction. This article is for reference only. I hope it can help you all.