Índice de conforto térmico, reações fisiológicas e desempenhos de tourinhos Sindi e Guzerá semiconfinados no agreste paraibano.

Abstract

The objective of this study was to evaluate and to establish the comfort indexes, the answers thermal regulate and acting of Sindi and Guzera semi confmed, in the period of july to september of 2007. Accomplished in the experimental station of Alagoinha. belonging EMEPA-PB, in the municipal city of Alagoinha, area of Agreste Paraibano. They were appraised the climatic variables: Temperature of the air (TA), Index of Temperature of Humidity (THI), Index of Temperature of Globe and Humidity (BGHI). Relative Humidity of the Air (RH), Temperature of Globe Black (TGN) and Air of the Wind (AW). Physiologic variables: respiratory rate (RR), Rectal Temperature (RT) and Skin Temperature (ST) and the productive indexes: Earnings of Daily (GPD) Weight. Earnings of Total (GPT) Weight and Consumption of Matter Dries (CM). 16 were used bovine: 8 of each race. With médium age of 30 ± 5 and 33 ± 3, of Sindi and Guzerá, respectively. The environmental indexes were measured daily every two hours (6 the 16 hours). The comfort indexes, THI (77,5) and BGHI (78,6). were. in the hottest schedules, out of the area of thermal comfort (ZCT), reaching leveis considered criticai, but RR and RT stayed inside of the normality for the species. The productive acting in both races was above the expected, the races answered the conditions of this experiment satisfactorily, being an indicative of good physiologic answer.