RODRIGUES, L. H. S.; http://lattes.cnpq.br/4005431189750142; RODRIGUES, Luiz Henrique de Souza.
Resumen:
The objective of this study was to evaluate the morphophysiological
characteristics of the adaptability of Soinga and Santa Inês sheep to the semi-arid
climate, correlating their physiological responses with the degree of adaptability. The
experiment was carried out in the municipality of Patos - PB, where 10 Santa Inês
sheep and 10 Soinga sheep were used, all male, uncastrated, with a daily average of
180 days, confined in individual stalls. The experimental period was 15 days of
adaptation to the management and 45 days of data collection. For the statistical
analyzes, a completely randomized design (DIC) was used, with two treatments
(Soinga and Santa Inês) and two shifts (morning and afternoon), with 10 replications,
totaling 40 experimental plots. The data obtained were ITGU, TS, FR and TR. The
averages found for the ITGU, 77.29 for the morning shift and 83.39 for the afternoon,
indicating that the animals were submitted to thermal discomfort in both shifts. There
was no significant difference between RR and TR between races within each shift. The
analysis of variance revealed significant interaction (P <0.05) between race, shift and
study sites for TS. Within the breed the Soinga sheep presented a lower mean TS,
being this result attributed to the coloring characteristic of the pelage. In the afternoon
shift, the animals had higher TS means, demonstrating that they had a higher incidence
of solar radiation. The mean TS in each study site (head, neck and trunk) showed a
significant effect (P <0.05), with a mean TS greater for the trunk, intermediate for the
neck and lower for the head. In the trunk region, the Soinga animals showed an
average TS lower than the Santa Inês breed. They concluded that despite being under
thermal stress, both races demonstrated efficiency in the dissipation of absorbed heat.
The Soinga animals present a better reflection of the solar radiation, maintaining a
mean of TS lower.