Farm Animal Welfare

Pig Pen Hygiene and Respiratory Disease Welfare

Poor pen hygiene and air quality are primary drivers of respiratory disease in pigs. Management improvements protect respiratory health and welfare.

Key Facts

Ammonia concentrations above 25 ppm damage pig respiratory mucosa
Dust from dry feed and bedding carries pathogens and irritants
All-in-all-out management reduces pathogen accumulation between batches
Ventilation design determines air quality throughout the pen
Respiratory disease is the most common cause of mortality in growing pigs after the neonatal period

Welfare Considerations

Pigs in poorly ventilated, high-ammonia environments experience chronic respiratory irritation and elevated disease risk. Respiratory infections cause fever, anorexia, and productive losses that reflect significant welfare impacts. Management investments in ventilation, hygiene, and all-in-all-out production systems protect pig respiratory welfare and reduce antibiotic dependency.

What You Can Do

Support farms with documented ventilation and air quality management
Advocate for air quality standards in pig housing regulations
Learn about the connection between pen hygiene and pig respiratory welfare
Support research into low-stress pig ventilation technologies