This work was to evaluate the adaptation of different genetic groups of goats through the physiologic , the rectal temperature, heart frequency and breathing frequency of the thermal gradient parameters under the conditions of the semi-arid region. Thirty non-castred goats were used, being six animals of each genetic group: Boer ½ + ½ WDR (without defined race), ½ Anglo-Nubiana + ½ WDR, ½ Savana + ½ WDR, ½ Kalarari + ½ WDR and ½ Moxotó + ½ WDR, with medium weight of 25.17kg, were assigned in a randomized in a split plot design in time. The feeding was done by a confinement ration the bulky. The meteorological maximum and minimum temperature, temperature of the dry bulb and humid bulb, temperature of the black globe in the shadow and relative humidity of the air were registred. The sockets of the physiologic parameters and of the environmental variables were done at 9:00h and the 15:00h. In the shift of the afternoon the breathing frequency was significantly (P <0.05) higher than the one of the shift of the morning, probably in function of the largest room temperature observed in this schedule. The data shown any significant (P>0.05) effect of genetic group also any effect of shift on the physiologic parameters such as rectal temperature and heart frequency. There was significant effect (P <0.05) for the gradient thermal rectal , superficial temperature and temperature of the atmosphere. There was significant effect (P <0,05), for variation among shift for the gradient on thermal rectal , superficial temperature and temperature of the atmosphere. The non-castred goatss from different genetic groups shown capacity to maintain the homeotermy.
skin temperature; rectal temperature; breathing frequency; heart frequency; goats
