COSTA, J. H. S.; http://lattes.cnpq.br/9001871809468764; COSTA, José Henrique Souza.
Resumo:
The experiment was conducted in the dry season, farm Umari, localized in Caturité in micro
East Cariri. Of the 20 male sheep of Santa Inês and Dorper were used, being ten animals of
each breed. For the physiological parameters in a completely randomized design was split plot
were used, with primary treatments consisted of the races and side, by turns. In environmental
comfort parameters observed a high rectal temperature (RT) in time from 17:00 For the
Dorper, different to the Santa Inês breed whose TR appeared high at all times, both in the sun
room; in the case of genetic group, this result showed, for the shadow environment, reversal
behavior and rectal temperature, and a lower RR for the Dorper breed at 08h00 and Santa Inês
breed for the 17h00. Based on the effect of different environments on the activity of rectal
temperature of sheep in various schedules reviews TR senses a smaller environment to which
animals were exposed, for the Dorper, the time from 08.00. Relating the average respiratory
rate (RR) schedules in shadow environment, we observed statistically, these two races, equal
means both in times of 11.00 and 14.00 in shadow environment. Comparing the means of RR
in different times and in different genetic environments groups, we found increased
respiratory rate, for both races to (sun) at 11.00 hours; already for the environment (shade) the
Dorper breed showed increased respiratory rate at all times, unlike Santa Ines. Evaluating the
average heart rate (HR) at various times with the other races, concludes increase in heart rate
for the Dorper (sun) race in time from 14h00 and 17h00, already for Santa Inês (sun) this
increase in heart rate occurred during the hours of 11h00, 14h00 and 17h00. Comparing the
average HR in different genetic groups at different times and environments, it was observed
that the means were equal to the respiratory frequency in both sun room and in the shadow
environment. With reference to the rate of temperature black globe humidity index as thermal
comfort in the sun room, the values of ITGUSL, presented high regardless of shifts, with
increased ITGUSL part 09:00; already in the afternoon it got a high temperature of 12: h00as
14: h00, whose maximum was Aces 13: 00 pm, Soon after, the 15: 00 pm, there was a
decrease in temperature, the environment in the sun ITGUSl. The results obtained for the
coefficient adaptation (CA) according to the Benezra-test if differences were observed
between the two breeds evaluated, demonstrating greater ability of animals Santa Ines to
dissipate heat through evapotranspiration. Santa Inês sheep As much as they are adapted to
semi-arid region, sheep triggered thermoregulatory responses differentiated when compared
with the Doper between sun and shade environment evaluated.