Abstract: Sow Mortality in a Pig Production System in the Midwestern USA: Reasons for Removal and Factors Associated with Increased Mortality

Jan 20, 2023

Abstract: Sow mortality in a pig production system in the midwestern USA: Reasons for removal and factors associated with increased mortality

Background: Sow mortality has become a growing concern in the pig production industry over the past decade. Therefore, we aimed to describe sow mortality and associated factors in a production system in the midwestern USA.

Methods: Mortality records from 2009 to 2018 for four farrow-to-wean farms were described. Environmental, farm- and individual-level factors associated with weekly mortality and individual risk of dying throughout a sow's lifetime were assessed.

Results: Deaths occurred at a median of 116 days from last service, or 26 days postpartum. The median parity upon death was two. Overall, the main reasons for death were locomotion (27%) and reproduction (24%). A higher weekly number of deaths was associated with spring (incidence rate ratio [IRR] 1.27, compared to winter). Sows had a higher mortality when they were exposed to at least one porcine reproductive and respiratory syndrome (PRRS) outbreak during their lifetime (IRR 1.55) and when housed in groups (pens) during gestation (IRR 1.32). Conversely, they had a lower mortality when housed in filtered farms (IRR 0.76), accounting for an interaction term between parity at removal and PRRS outbreak exposure.

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Video: Exploring Precision Data in Swine Production - Dr. Janice Siegford

In this episode of The Swine it Podcast Show, Dr. Janice Siegford from Michigan State University discusses how precision livestock farming data can support pig health, welfare, transparency, and decision making. She explains why data ownership, privacy, consumer perception, and cost sharing must be addressed as technology becomes more common on farms. Listen now on all major platforms.

“Precision livestock farming data can support producers, veterinarians, certifiers, and consumers by enabling improved monitoring, prediction, and decision-making across the entire production system.”

Meet the guest: Dr. Janice Siegford / janice-siegford-24318839 is a Professor and Associate Chair in the Department of Animal Science at Michigan State University. Her expertise in animal welfare, neuroscience, and zoology supports research on pig behavior, stress resilience, and precision livestock farming. Her work explores early weaning, genetics, and stakeholder perspectives on technology adoption to improve pig care, health, and productivity. Learn more from Dr. Janice Siegford on The Swine it Podcast Show, available on all major platforms.