Farm Animal Welfare

Pigs and Chronic Pain in Intensive Systems

Chronic pain in intensively farmed pigs is widespread but underrecognized — from lameness to tail injuries, pigs frequently suffer conditions that persist throughout their lives.

Key Facts

Lameness affects an estimated 1 in 5 sows in intensive systems
Tail docking is routinely performed to reduce biting, itself a welfare problem
Osteochondrosis — joint cartilage damage — is common in fast-growing breeds
Pain reduces feed intake, growth, and reproductive performance
The Five Domains model identifies chronic pain as a major welfare deficit
Analgesics are rarely administered in commercial pig production

Welfare Considerations

Chronic pain profoundly diminishes pig welfare. Pigs are intelligent, social animals with a well-developed capacity for suffering. When lameness, wounds, or joint disease go untreated, they cannot express natural behaviors, compete for resources, or rest comfortably. The problem is often invisible to producers focused on throughput metrics, making systematic pain assessment tools and mandatory pain management protocols essential for meaningful welfare improvement.

What You Can Do

Support producers certified under higher welfare standards that address pain management
Advocate for legal requirements to assess and treat chronic pain in farm animals
Encourage research into low-stress housing that reduces injury rates
Choose pork from farms with documented lameness monitoring programs
Support funding for veterinary pain management research in livestock