Thermal environment and gas concentrations in poultry houses during heating

摘要: Currently, the national and international markets are stressing actions for environmental preservation, including data collection regarding concentrations or emission of harmful gases generated from animal production. The lack information this subject is reason study which to diagnose carbon monoxide dioxide associated with thermal comfort broiler chickens in poultry houses. Two different types air renovation heating were studied: ventilation by negative pressure positive pressure, during winter southern region Brazil. For evaluation environment, randomized blocks used split-plot design two repetitions. index black globe's temperature humidity indicated best conditions environment first week life birds system. highest gas detected morning both methods, within acceptable levels good bird development.