Ammonia levels during broiler rearing cycle

The evaluated ammonia volatilization rates and its association with humidity, temperature, pH in broiler litter conventional dark house rearing systems. Evaluations were performed at 0.01, 1.00, 1.50 m high, using a completely randomized design, weekly frequency for 12 weeks—from the sanitary void to end of 42-day cycle. Litter temperature had no significant difference different types house. Humidity levels varied according houses evaluation periods. No was detected during initial However, up from 21st day rearing, started increase, showing higher concentrations 0.01 height. At 1.00 m, values around 20 mL·m–3, obtained considered an acceptable exposure level broilers employees directly working this sector. Yet, breeders should target lower due environmental impacts.