Pig Pain Assessment and Management: Clinical Best Practice

Pigs experience acute and chronic pain from production procedures, disease and injury. Recognising pig pain and managing it appropriately with analgesia is a fundamental welfare obligation in modern pig farming.

Key Facts

Pigs are highly sensitive to pain and show complex behavioural and physiological pain responses
Pain assessment tools for pigs include the Pig Grimace Scale, locomotion scoring and behavioural observation
Castration of piglets without pain relief is still practiced in many countries despite evidence of acute pain
Tail docking, teeth clipping and ear notching all cause acute pain if performed without analgesia
Conditions causing chronic pain in pigs include lameness, injuries from fighting, arthritis and gastric ulcers
Meloxicam is the most commonly used NSAID in pig farming; opioids are available for more severe pain
The European Medicines Agency's SWIM initiative promotes better pain recognition and management in livestock

Welfare Considerations

Pain management in pigs lags significantly behind that in companion animals and humans. Procedures that would be unthinkable without anaesthesia in a dog are routinely performed without pain relief in piglets. This reflects both economic pressures (analgesics add cost) and a historical underestimation of pig sentience and pain capacity. The scientific evidence is now unambiguous: pigs experience pain in ways that are neurologically and behaviourally analogous to human pain. Veterinary, legislative and industry culture change is necessary to make pain management the default rather than the exception in commercial pig farming.

What You Can Do

Support certification schemes that require pain relief for routine procedures in pigs
Ask retailers about their suppliers' pain management protocols for piglet procedures
Advocate for legislation requiring analgesia for all painful procedures in pigs
Choose pig-free diets or certified higher-welfare pork to support better production standards
Support research into validated pig pain assessment tools for farm use
Educate others about pig sentience and pain capacity to shift cultural attitudes