Respiratory disease in poultry causes significant welfare compromise at enormous scale. Ventilation quality and biosecurity are the most important welfare-relevant management factors.
Poultry respiratory welfare operates at a scale that makes individual treatment impractical - billions of birds require population-level prevention approaches. Ventilation quality is the single most impactful management factor for respiratory welfare in indoor poultry systems: adequate air exchanges, humidity control, and ammonia management prevent both direct irritation and secondary disease. Farms with good ventilation systems and biosecurity programs consistently show lower respiratory disease burdens, lower antibiotic use, and better welfare indicators. The challenge is that ventilation investment is expensive and requires consistent management attention - but the welfare and production returns justify it.