What are the causes of stillbirth in pigs?

1. Premature abortion of sows-By increasing the energy and protein concentration in the feed and the feeding amount of sows in the late pregnancy, the newborn weight of piglets is increased, commonly known as "abortion". Premature abortion of sows is easy to cause problems such as mammary gland dysplasia, overweight sows, oversized piglets and difficulty in increasing postpartum feed intake of sows, so it should be carried out after 90 days of pregnancy.

2, the delivery room temperature is too high-this is a very big stress for sows, so that the uterine muscles can't get oxygen, the frequency and intensity of uterine contraction are reduced, the delivery time will be abnormally prolonged, and the effect of oxytocin injection in vitro is not great, because it can only reach the uterus sporadically, and the smooth muscle can't respond to it, leading to dystocia and fresh stillbirth.

3, insufficient reproductive nutrition-less amniotic fluid, resulting in stunting of piglets, less amniotic fluid, too low lubrication of the birth canal, increased resistance such as birth canal friction, that is, dystocia.

4, long-term restrictions-sows are seriously lacking in exercise, physical strength, endurance and muscle contractility are greatly reduced, and sows often have too long labor.

5, drug abuse-abuse of antibiotics for treatment or health care, resulting in liver and kidney damage, liver detoxification function decreased, kidney detoxification function decreased, more toxins accumulated in the body, after being detoxified and absorbed by the birth canal, it caused edema of the birth canal and poor vitality or death of piglets.

6, reproductive disorders-reproductive disorders such as blue ears, rings, pseudorabies, Japanese encephalitis, chlamydia and so on. It may cause the fetus to die in the womb.

7. Transfer to another group-When the sow is transferred from the pregnant house to the delivery room, due to the conditions of the enclosure (such as wet ground and high seam between the delivery bed and the ground) and the lack of patience of employees, it is easy to treat the sow rudely, resulting in the sow falling down and causing fresh stillbirth.

8. Feed moldy and deteriorated feed-after each feeding, clean up the scraps of the trough, because the trough is a long-term scrap, especially for sows in the third trimester, and the trough will not be eaten too clean, which will lead to moldy feed, and mycotoxin will lead to fetal edema and death in the womb.

There are many and complicated reasons for stillbirth of sows. It is suggested that everyone should raise it scientifically, prohibit feeding moldy feed, and breed sows after vaccination. At the same time, it is suggested that the sub-health state of sows during pregnancy should be adjusted, and Shen Anning+Jianlibao should be used to protect liver and gallbladder, improve immunity and alleviate the sub-health state of sows, thus solving the problem of stillbirth.