Farm Animals

Pig Housing Air Quality Welfare

Poor air quality in pig confinement buildings causes chronic respiratory disease and reduces welfare significantly.

Key Facts

Ammonia levels in pig buildings frequently exceed thresholds causing respiratory damage
Hydrogen sulfide from slurry pits causes acute toxicity and deaths in poorly ventilated buildings
Dust particles carry pathogens that cause pneumonia
Natural ventilation and improved slurry management reduce ammonia substantially
Respiratory disease is among the leading causes of welfare-reducing illness in pigs

Welfare Considerations

Air quality in pig confinement buildings is a significant and largely invisible welfare problem. Chronic ammonia exposure damages respiratory tissue over time. Dust and pathogens cause disease. Simple ventilation improvements and slurry management changes can dramatically reduce airborne welfare insults. Monitoring air quality and acting on results is a key welfare responsibility.

What You Can Do

Support mandatory air quality standards in pig confinement regulations
Advocate for natural ventilation requirements in pig building design
Choose pork from outdoor or well-ventilated indoor systems
Support research on low-cost air quality improvements for pig buildings
Engage with air quality as a welfare issue in livestock regulations