Naturally ventilated houses require continuous 24 hour management and the constant monitoring of both the
ambient conditions (temperature, relative humidity, wind speed and wind direction) as well as the conditions
within the house (temperature, relative humidity, air quality, and bird comfort). The curtains or sidewall flaps
need to be continually adjusted in response to any changes in environment (both internal and external) that
occur. Even with constant management, achieving adequate control of the in-house environment of opensided
houses can be difficult and as a result broiler performance in open-sided houses is often poorer and
more variable than in controlled environment houses.