QUALIDADE DO AMBIENTE AÉREO NA CRIAÇÃO INICIAL DE CODORNAS DE CORTE EM FUNÇÃO DE DIFERENTES TEMPERATURAS1/QUALITY OF THE AERIAL ENVIRONMENTAL ON THE INITIAL PRODUCTION OF QUAILS IN FUNCTION OF DIFFERENT TEMPERATURES

National and international markets require actions seeking an environmental preservation, including data on the concentration of harmful gases generated by the activity of animal production. This subject is important for the conditions of Brazil, due to lack of information, which is why the objective of this study was to verify to what extent the levels of CO2 and NH3 present in installations may impair the quality of life of quails during the initial production cycle. The study was conducted in five climatic cameras located in the experimental area from the Department of Agricultural Engineering, Federal University of Vicosa. A total of 900 quail were housed in growth chambers, subjected to treatments with five different temperatures. The treatments were randomly distributed, as follows: Severe Cold, Cold Moderate, Recommended Comfort, Moderate Heat and Severe Heat. The animals were randomly assigned to each treatment, consisting of 30 birds each. Non levels of NH3 were observed during the experimental period. Carbon dioxide concentrations were within acceptable limits for the proper development of quail.