High sow replacement rates in modern pig production indicate poor longevity driven by lameness, reproductive failure, and breakdown. Improving longevity benefits both welfare and sustainability.
Short sow productive lifetimes indicate chronic welfare compromise. High rates of lameness, joint damage, and injury lead to early culling before sows reach their productive potential. Sows removed due to lameness have suffered months of chronic pain before the decision to cull is made. Selecting for good leg conformation, providing bedded lying areas, and maintaining appropriate body condition throughout the reproductive cycle all improve sow joint health and extend productive lifespan while reducing lifetime welfare compromise.