Pig Porcine Respiratory Disease Complex: Welfare Impact and Prevention

Porcine Respiratory Disease Complex is a major welfare and production issue in intensive pig farming worldwide.

Key Facts

PRDC is caused by multiple co-infecting pathogens including PRRSV, Mycoplasma hyopneumoniae, and influenza.
Disease prevalence exceeds 50% in many intensive pig herds globally.
Pigs with PRDC experience laboured breathing, coughing, fever, and reduced growth rates.
Prophylactic antibiotic use to manage PRDC is a significant contributor to antimicrobial resistance.
Herd management practices including all-in/all-out systems and good ventilation reduce severity.
Vaccines against key PRDC pathogens are available and form part of integrated control programmes.

Welfare Considerations

PRDC causes significant suffering through respiratory distress, fever, and reduced thrive. Affected pigs are often lethargic and withdrawn, indicating compromised welfare. Prevention through vaccination, controlled mixing, and good air quality is far preferable to reactive antibiotic treatment. Welfare-conscious farms conduct regular health monitoring and maintain detailed treatment records.

What You Can Do

Support welfare certification schemes that include health planning and antibiotic stewardship requirements.
Ask food retailers about herd health programmes on farms supplying their pork products.
Advocate for phasing out routine preventive antibiotic use in pig production.
Support research into PRRSV vaccines and alternative disease management strategies.