Look at breasts: as the saying goes, "nipples explode and will soon fall off." During the period from 0/5 to 20 days before delivery/kloc-0, the sow's breast gradually swelled and drooped from back to front, and its base swelled in the abdomen, showing two bands. The breast skin is tight and red, and the nipples on both sides are splayed outward in a figure of eight. About 6 hours before delivery, thick yellow-white milk can be squeezed out. As the saying goes, "milk wears an arrow shaft, and childbirth is not far away." Under normal circumstances, clear milk can be squeezed out 2 ~ 3 days before delivery. Sows may give birth about 24 hours after thick milk appears in the front nipple and 3 ~ 6 hours after thick milk appears in the middle nipple. If you gently squeeze each nipple with your hands, you can milk it, or at last 1 when you can milk the breasts, you will give birth.
The baby will be born soon. But there are also some sows that secrete milk after giving birth.
Second, look at the vulva. 3 ~ 5 days before sow labor, vulva begins to swell and droop, and both sides of tail root are sunken, which is a sign of pelvic opening. At the same time, the frequency of excreting feces and urine increased. If the vulva is loose, red and swollen, and there is mucus flowing out, it is a sign of quick delivery. When the vagina oozes thin bloody mucus, it means that the sow has "broken water" and will give birth within 30 minutes, that is, as the saying goes, "The sow urinates frequently and the delivery is coming."
Third, look at the number of breaths. Breathe 54 times per minute 1 day before delivery and 90 times per minute 4 hours before delivery.
Fourth, the behavior shows that sows are nervous 6 ~ 12 hours before labor, which is often manifested as fidgeting, nervousness, loss of appetite, walking back and forth in the house, and some picking grass to build nests; When there is no grass to pick, you will arch the ground with your mouth, and your front hoof is like a nest. The protective sows become rude, keep people away, and some bite people. Don't approach strangers at this time, and don't change people casually.
2. Feeding management of parturient sows?
If lice or scabies are found in sows, 2% trichlorfon solution should be sprayed to avoid transmission to piglets after delivery. ?
Refueling sows should be fed with the daily ration in lactation period from10 to15 days before delivery, so as to prevent indigestion and diarrhea of piglets caused by sudden refueling after delivery. Add and subtract feed If the sow is fat, the breast will be obviously enlarged, the concentrate feed will be gradually reduced from 1 week before delivery, and the diet will be reduced by half from 1-2 days before delivery; It is also necessary to reduce large-volume feed such as coarse feed and dregs, so as not to oppress the fetus or cause constipation of sows before delivery. However, if the sow has poor fat and shriveled breasts, it should not reduce the feed, but also add protein prolactin feed such as bean cake to prevent the sow from losing milk after delivery.
Stop feeding when the symptoms of labor are found, and only feed bean cake bran soup.
Moderate exercise should stop long-distance exercise before delivery 1 week, and move around the pig house or sports field instead to avoid abortion or stillbirth caused by fierce chasing and bumping. ?
Move the sow into the delivery room 3-5 days before delivery, so that it can get familiar with and get used to the new environment, so as to avoid the asphyxiation of the fetus caused by intense tossing before delivery, but don't move the sow into the delivery room too early, so as not to pollute the delivery circle and reduce the physical strength of the sow.
Pay attention to the observation of sows before delivery 1 week, pay attention to sow dynamics at any time, strengthen nursing, and prevent accidents such as premature delivery and non-delivery.
Li Siqi replied.