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Determination of the timing of sows' culling and death
Sow elimination usually occurs about 60 days after childbirth, and the highest mortality rate is between 14 days and 55 days after childbirth. Elimination after 60 days post-partum usually indicates that the sow has returned to estrus after weaning and mating, and has been restocked. Due to other reasons, it may cause death from 14 days to 55 days after childbirth. Pig farms should strengthen the management of the sow's pregnancy and delivery stages in order to improve sow comfort and reduce the risk of post-partum death. Monitor sow body condition. In summer, sows are provided with cooling facilities; in winter, the temperature of the house temperature is optimized to the sows to feel comfortable, and the sows can be properly cared for during the farrowing process. At weaning, poor sow condition and improper postnatal health care practices may cause sows to die 55 days after childbirth. If this happens, check the health procedures and change the feeding method to improve the welfare of the sow at weaning and after weaning. Improve breeding sows retention rate. Piggers should determine when sow culling and deaths occur most of the time, and check and improve the management of culling and death times in order to reduce culling and mortality.