Increasing the retention rate of breeding sows can increase the production life of sows and improve the life performance of sows. This helps to reduce the cost of breeding pigs allocated to each commercial pig and increase production efficiency. To increase the retention rate of breeding sows, producers must know what is likely to result in the elimination of sows.
Typically, sow elimination occurs approximately 60 days after delivery, with the highest mortality rate between 14 and 55 days postpartum. A 60-day elimination after delivery usually indicates that the sow has re-estrus after mating after weaning and has been re-bred. Other reasons may cause 14 to 55 days of postpartum death. The farm should review the management of the pregnancy and delivery stages in order to improve the sow's comfort and reduce the risk of postpartum death.
The sow's condition should be monitored so that the sow is neither fat nor thin at the time of delivery. In the summer, the sows should be provided with cooling measures if necessary, and in the winter, the temperature should be optimized to the extent that the sows are comfortable. Childbirth care strategies should also be reviewed to ensure that the sows are properly cared for during childbirth. Poor condition of the sow during weaning and improper postnatal care measures may result in death of the sow 55 days after delivery. If this happens, review the health procedures and feeding strategies to improve the weaning and post-weaning benefits of the sow.
Increasing the retention rate of breeding sows can increase the production life of sows, improve the life performance of sows, and reduce the cost of breeding pigs allocated to each commercial pig. Pig producers should determine when most of the sows are eliminated and the events of death occur. Management practices for elimination and death-prone periods should be reviewed and improved to reduce the proportion of elimination and death.
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