Sow prenatal preparation must do a good job of these 5 points!

The transformation of sows into golden pigs and the feeding and management of sows before parturition are very important to ensure the smooth delivery of sows and improve the survival rate of piglets.

First, go to the delivery bed

Only after disinfection in the delivery room can you give birth for a period of time, and begin to give birth 7-10 days before the sow due date. As the name implies, the sow in labor is to catch up with the bed to give birth.

In the process of delivery, the action must be gentle, slow, it is strictly forbidden to hit sows, generally 3-5 people cooperate, pay attention to: sow position adjustment, sub-healthy pigs (that is, there are bleeding spots, tear marks, weight loss, anemia, dead skin and so on. ) on the downwind delivery bed, and the healthy pigs on the upwind delivery bed.

After giving birth, the overall condition of pigs (stress and other acute conditions) was observed and necessary measures were taken.

Prenatal injection of sodium selenite and vitamin E preparation

Selenium is a component of glutathione peroxidase, which scavenges free radicals of lipid peroxidation in the body, prevents lipid peroxidation of biofilm and maintains the normal structure and function of cell membrane. Selenium also participates in the synthesis of coenzyme An and coenzyme Q. it plays an important role in the body.

Vitamin E is also closely related to animal reproductive function, which can promote gonadal development, promote pregnancy and prevent abortion, as well as antioxidation.

Prenatal injection of sodium selenite and vitamin E in sows can ensure the next normal estrus of sows, effectively alleviate the second fetus syndrome, improve the immunity of sows and prevent selenium deficiency anemia in sows. It can significantly improve the immunoglobulin in plasma and in sow colostrum.

Therefore, reducing the dead piglet rate and weak piglet rate during delivery also has an obvious preventive effect on the diarrhea of piglets. It can improve the reproductive performance of sows and the growth and development of piglets.

Note: sodium selenite and vitamin E preparation is toxic, so attention should be paid to its application.

III. Prenatal feeding of sows

The main results are as follows: 1. For sows in good condition and well-developed breasts, the feeding level of late pregnancy is gradually reduced by half or 1/3 within 3-5 days before delivery, which can prevent postpartum milk secretion from causing mastitis, or excessive milk from causing diarrhea in piglets.

In the later stage of pregnancy, the fetus continues to grow and oppress the intestines, causing gastrointestinal peristalsis to slow down, and the fetus occupies a large part of the abdominal volume, and the intestines in the stomach of sows are fully released after birth. cause intestinal disorder at this time if the prenatal diet is very easy to cause postpartum constipation.

2. For the sows with insufficient breast expansion in the prenatal days, it is necessary to add some protein-rich feed, such as fish meal, which is beneficial to the postpartum recovery of sows.

3. For first-and second-born sows, first-and second-born sows are small in size and low in feed intake, so it seems that they are easily full without much feed.

Therefore, the first and second sows should be controlled as much as possible before birth, otherwise they will not eat for a few days after delivery.

It is particularly important to note that it may lead to high milk concentration and nutritional diarrhea in piglets due to prenatal uncontrolled feeding.

4. For sows after giving birth to three births, because of their large size, they all need to consume a lot of feed, not to mention piglets, so they almost never have enough to eat and are always in control.

Therefore, in this case, there is no need to reduce the amount of food before delivery, at the same time, do not let it eat into the trough left a lot, the rest of the material should be scraped out to prevent mildew.

4. Prenatal measurement of backfat in sows

The measurement of backfat is an accurate method to judge the fat condition of sows. The backfat is measured by backfat meter, the normal range is 18-20mm, and the position of backfat is at the left and right of the last 1-2 ribs and the 6.5cm of the midline of back.

First, drive the sow up, make it stand, shave the fat measuring position with an electric fader, then spray cooking oil as a coupling agent, and then measure the backfat of the sow.

The significance of measuring the backfat of sows: the evaluation of the body condition of sows in a digital way can reduce unnecessary errors; examine and evaluate the nutritional reserves of sows; guide the feed adjustment of sows and optimize the fat condition of sows; to explore the relationship between sow backfat loss and reestrus after weaning, and determine the appropriate feeding scheme.

5. Signs of prenatal secretion in sows

The gestation period of sows is about 110-120 days, with an average of 114 days. the delivery of sows more than 8 days in advance belongs to abortion, less than 8 days, and preterm delivery above the normal value.

4-5 days before delivery, the breasts were significantly dilated and bright, and the latter pair of breasts were squeezed with hands and clear milk flowed out; three days before delivery, the sows were restless, moved cautiously, and the hands touched the nipples with a sense of heat; one day before delivery, the milk squeezed out was thicker and yellow, and the vulva of the sows was swollen and relaxed, showing purplish red, with mucus at the gate of the vulva.

If the last two pairs of nipples can squeeze out the milk, it is expected to have 24 hours to give birth, if the middle pairs can squeeze out the milk, it is expected to have 12 hours to give birth; if the first few pairs can squeeze out the milk, it is expected to have another 5 hours to give birth.

Before parturition, sows are extremely restless, shortness of breath, walking back and forth, frequent urination, yellowish mucus outflow from the vulva, piglets are about to be born.

Therefore, the majority of farmers to do a good job in prenatal feeding and management of sows can effectively improve the survival rate of piglets, the utilization life of sows and so on. So it's not a problem for a sow to become a golden pig!