MEDEIROS, A. R.; http://lattes.cnpq.br/8779005987128876; MEDEIROS, Aldenora da Rocha.
Resumen:
The objective of this study was to evaluate by infrared thermography the effect of diet
and the shifts on the physiological responses and thermal gradients of Santa Inês sheep
raised under intensive supplemented with organic and inorganic minerals in the
semiarid Paraiba. Were used 20 sheep, distributed in a completely randomized design
with a 4x2 factorial arrangement (four diets and two shifts), with 5 repetitions. Analysis
of variance revealed significant effects of shift (P<0.05) for all treatments, with the
highest average observed in the afternoon, being the highest averages observed in the
afternoon, already to thermal gradients, it was verified the highest averages in the
morning shift. The highest average superficial temperature were found both in the
animals that were treated without mineral supplementation (34.96°C) and in animals
that were treated with copper chelate (35.56°C). There was an interaction between
treatments and shifts, there was not statistical difference (P <0.05) just between the
average rectal temperature of the animals that received treatments without mineral
supplementation of the diet (38.77°C) and diet with zinc chelate (38.10°C), the morning
shift. For respiratory rate, observed values of 30.48 and 52.69 mov / min in both rounds
respectively, showing a low stress. The environmental conditions in the semiarid are
stressful, especially in the afternoon, Santa Inês sheep supplemented with organic and
inorganic minerals satisfactorily responded to the climatic conditions of the semiarid
region, with physiological responses within normal standards. It is necessary to develop
more research on the use of chelated trace minerals in the diet of sheep, especially in
respect to the effect on these physiological variables.
