The aim of this work was to analyse the environmental effects on the productive performance of commercial broiler chickens, raised in two poultry houses located in the semiarid region of Paraiba during the summer months, with one of them covered by a ceramic roof and the other covered with a fibrous cement roof. There was no significant difference between the poultry houses (P > 0.05) for temperature and relative humidity of air, index of black globe temperature and humidity, thermal load of radiation and wind speed. Poultry houses provided during the times considered hotest during the day (10 a.m. to 4 p.m.), average values considered above the comfort zone, causing an uncomfortable situation for the animals, but did not influence the productive performance. The water temperature in both poultry houses was higher than recommended, but also did not affect the productive performance. The sound level inside the poultry house did not cause discomfort to the birds or to the workers.
climatic conditions; sound pressure; productivity
