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: Season 7, Episode 1: Managing Risk and Seeing Opportunities in U.S. Pork Production

Today’s episode features three guests discussing the similarities and differences between pork production in the United States and Brazil, along with strategies for managing risk in today’s industry while recognizing and acting on opportunities. First, Dr. Anne Caroline de Lara, executive manager of live pig production at Seara Alimentos, a JBS company in Brazil, is joined by Dr. Matthew Turner, head of operations for JBS Live Pork. Together, they discuss how labor, climate and ventilation challenges vary between Brazil and the United States, while underscoring their shared commitment to raising healthy pigs. They also point to lessons producers in both countries can take from one another’s systems and on-farm experiences. Then, Brady Reicks, risk manager at Reicks View Farms, shares his perspective on risk management, drawing from his background in markets and his transition into farming. He discusses how protecting margins varies by operation and offers practical approaches producers can use to make marketing and business decisions with greater confidence rather than hesitation.

Both conversations were recorded at recent industry events focused on swine livability, including the International Conference on Pig Livability and Iowa Swine Day.