Avaliação do gradiente térmico de quatro grupos genéticos de ovinos nativos em confinamento.

Abstract

The present work had the aim to determine thermal means at installation to ovines and analyse physiological parameters and way of life degree of 4 genetic groups, in the dry region of Paraiba. It had been used 40 animals, 10 per genetic group: Cariri, Morada Nova, Barriga Negra and Cara Curta ,all of them were female ,kept in 4 places by chance .Data were air temperature (TA), air relative humidity (UR), wind speed (Vv), dark block temperature (Tgn), humidity and dark block temperature (ITGU), radiation thermal support (CTR). Physiological data were respiratory frequency ( FR), heart frequency (FC), bottom temperature (TR) and superficial temperature (TS), evaluated for 9 and 15 h. Way of life degree was carried out by Baccari Junior Test. Data evaluation was carried out in randomized sketching in 4x2, being 4 genetic groups and two periods .Environmental means ,in the afternoon, were upper to the morning ones and had its values, with exception to UR and Vv, increased to the normal tax. TR, FR, FC and TS in the afternoon were higher than in the morning, but TR normally and FR and FC upper to the normal. ITC did not show significance difference among genetic groups and showed that the animals, with higher FR and FC showed high capacity to the region.