Accurate pain assessment is fundamental to livestock welfare. Validated pain scoring tools allow farmers and veterinarians to identify and treat pain that would otherwise go unrecognized.
Pain assessment in livestock is a prerequisite for welfare improvement — you cannot treat what you cannot detect. The development of validated grimace scales for multiple livestock species represents a significant advance in practical welfare science. These tools allow consistent assessment of pain across different observers, enabling reliable monitoring on farms. The discovery that grimace scale scores remain elevated for days after procedures previously considered acute reinforced the need for multi-day analgesia protocols. Integrating routine pain assessment into farm management — daily lameness scoring, post-procedure monitoring, pre-slaughter pain assessment — creates the data foundation for continuous improvement. Technology is now enabling automated pain scoring through computer vision systems on commercial farms.