Intensive Poultry Barn Air Quality and Welfare

Air quality inside intensive poultry barns — particularly ammonia, dust, and CO2 levels — significantly affects respiratory health and welfare of millions of birds in commercial production.

Key Facts

Ammonia from decomposing litter can reach concentrations that cause eye and respiratory damage in broilers and laying hens.
Recommended maximum ammonia levels for poultry welfare are 20 ppm, but levels in poorly managed barns can exceed 50 ppm.
Dust levels in poultry buildings are among the highest measured in any agricultural setting and cause respiratory disease in birds and human workers.
Ventilation system management is critical to air quality, with failures in summer heat or winter conservation of heat creating welfare conflicts.
Good litter management including moisture control is the primary tool for reducing ammonia production at source.

Welfare Considerations

Air quality in intensive poultry production is a chronic, invisible welfare problem for birds who live continuously in environments that damage their eyes and respiratory systems. Unlike outdoor exposures that vary with conditions, barn air quality determines every breath a bird takes across its entire life. Regulatory limits and enforcement of ammonia and dust levels in poultry buildings are welfare safeguards that require stronger implementation in many production systems.

What You Can Do

Support farm assurance schemes that include air quality monitoring requirements in poultry buildings.
Advocate for regulatory enforcement of maximum ammonia concentration limits in commercial poultry buildings.
Choose poultry products from certified farms with published air quality management standards.
Support research into litter management and ventilation technologies that improve barn air quality cost-effectively.