Intensive Poultry Dust and Air Quality Welfare

Air quality in intensive poultry houses — high in dust, ammonia, and particulates — causes chronic respiratory disease and significant welfare compromise.

Key Facts

Ammonia concentrations in poorly ventilated poultry houses frequently exceed welfare threshold levels.
Dust from feathers, faeces, and feed causes rhinitis, tracheitis, and air sacculitis in broiler flocks.
EU welfare codes set a maximum ammonia limit of 20 ppm for poultry houses.
Litter management — moisture control and turning — is the primary method for reducing ammonia production.
Adequate ventilation must balance air quality with temperature control, especially in winter.

Welfare Considerations

Chronic respiratory disease in poultry caused by poor air quality is painful, impairs breathing, reduces feed efficiency, and increases susceptibility to secondary infections. Affected birds show ocular and nasal discharge, rales (respiratory sounds), and in severe cases open-mouth breathing. The welfare impact extends across entire flocks — ammonia causes eye inflammation and corneal damage at high concentrations. Farm assurance schemes inspect air quality and litter conditions but frequency of visits is insufficient to guarantee continuous welfare. Higher-welfare systems with lower stocking densities and better ventilation generally have superior air quality.

What You Can Do

Choose poultry products from higher-welfare, lower-density systems with better ventilation standards.
Support farm assurance schemes that include air quality monitoring as a core standard.
Advocate for lower permitted maximum stocking densities that reduce ammonia production.
Encourage research investment in low-cost continuous environmental monitoring for poultry houses.