What should the sow do for the first time? How to prevent sows from dystocia?
Farmers know that the most feared encounter in the production of sows is dystocia, and for the sows produced for the first time, the chance of dystocia is greater than that of sows produced many times. How to prevent sows from being difficult to produce? What should I do if I have a sow? First, the cause of dystocia Sow aspect: The dystocia caused by the sow's own cause is mainly manifested by the fact that the young sow is still in the stage of growth and development after mating, and the development of the pelvis is not completely pelvic, although the sow has experienced during childbirth. Strong uterine contractions, but the fetus sometimes cannot be discharged from the uterus and dystocia; improper management of primiparous sows causes poor primiparous sows and is too weak after a long period of delivery. The contraction of the uterus is weak, and it is impossible to produce the fetus and cause dystocia. If the primiparous sow is too obese, dystocia will occur; when the primiparous sow is stimulated by the outside during pregnancy, a strong stress reaction occurs, such as sudden onset. Fright, the childbirth environment is not quiet, etc., will cause primiparous sows to get upset, the uterus can not shrink properly and difficult to produce; in addition, the primiparous sows have some diseases that can cause bladder paralysis, make the urine unable to discharge, the bladder accumulates A large amount of urine will squeeze the birth canal and cause dystocia. Other primiparous sows may also cause dystocia due to stunting and malformation of the birth canal. Fetal aspects: The dystocia of the primiparous sows caused by the fetus is mainly due to the small number of fetuses and the excessive growth of the individual. The pelvic ostium of the primiparous sows is generally small and the birth canal is relatively narrow, so that the fetus cannot pass the cervix. The mouth causes dystocia; the fetal position is not the correct posture of the fetus in the birth canal, which blocks the birth canal and causes dystocia; sometimes the sows will have two piglets entering the birth canal at the same time, which causes dystocia. This phenomenon is rare. In addition, when the fetus dies in the mother, and the death time is long, the fetal edema can not be discharged from the birth canal.  Second, prevent sows from dystocia In order to prevent dystocia in primiparous sows, farmers need to strengthen the management of gilts from various aspects. Do a good job in the management of young cattle sows: rational feeding to avoid too fat or too thin sows, to maintain a moderately upper body condition. Provide appropriate nutrition to ensure normal growth and development, including the development of the body and the development of various organs. Care should be taken to provide adequate nutrition before the weight of the primiparous sow reaches 100 kg. Do a good job in feeding and management: Generally, it should be fully raised in the 10th day after mating at 6 months to promote the development of ovary and uterus, so that it can reach sexual maturity and body maturity, and should be fed in the first 2 weeks of breeding, but It should be noted that the thickness of the back should not exceed 20 cm. Timely breeding of sows: mating of primiparous sows should not be premature. If the breeding time is too early, although the young sows have reached sexual maturity, the body maturity has not yet been reached, so the development of sexual organs is not complete, and the breeding is too early. Difficulties occur, leading to a decline in reproductive performance of primiparous sows, and will also affect lifelong fertility. Therefore, it is necessary to participate in breeding after the primiparous sows reach sexual maturity and maturity at the same time. Usually gilts are weighed to 130 kg, and breeding in the 3-4th episode can avoid stenosis of the birth canal. Strengthening the management of pregnancy: For the primiparous sows, it is not appropriate to excessively pursue the birth weight of the piglets. If the newborns of the piglets are overweight, the sows may cause too much dystocia in the sows. Therefore, it is necessary to control the feeding amount in the late pregnancy. In addition, during the pregnancy, the sow's exercise should be strengthened to enhance physical fitness and reduce the incidence of dystocia during childbirth. Do a good job in the delivery of primiparous sows at birth: At present, large-scale pig farms use limit bars to raise pregnant sows, which results in a lack of exercise and a poor quality of sows, and a narrow birth canal in the primiparous sows. Factors such as excessive fetal size can make the sow too tired during childbirth and cause dystocia. Therefore, infusion can be used to supplement body fluids and nutrients during the delivery of sows, which can effectively prevent the occurrence of dystocia. In addition, prostaglandins can be administered to the sows 36 to 48 hours after delivery, so that the uterus contents of the sows are discharged before closure. In addition, infusion of Qinggong liquid into the uterus after 8 hours of sow delivery can effectively prevent reproductive dysfunction in the primiparous sow. Third, the solution to the difficult birth of sows In order to reduce the harm caused by dystocia to sows and piglets in the case of dystocia in sows, scientific methods should be used to assist midwifery. For farmers who are proofreading the number of farmed sows, they can learn about the midwifery knowledge to help the sows to produce smoothly, which can greatly improve the productivity of the sows and reduce the occurrence of dystocia. 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