F. Ferreira, M. F. Á. Pires, Mário Luiz Martinez, S. G. Coelho, A. U. Carvalho, P. Ferreira, E. J. F. Filho, W. E. Campos
2006.10.1ARQUIVO BRASILEIRO DE MEDICINA VETERINARIA E ZOOTECNIA
tlooto Summary
The thermoregulation physiological responses in thermoneutrality and heat stress of crossbred calves, males and females, with age between 14 and 20 months were studied.
Abstract
The thermoregulation physiological responses in thermoneutrality and heat stress of crossbred calves (½Gir x ½Holstein), males and females, with age between 14 and 20 months were studied. The animals were submitted to thermoneutrality (22°C and 70% of relative humidity) and to heat stress (42oC and 60% of relative humidity) in summer and winter season's in bioclimatic chamber. Rectal temperature (TR), respiratory rate (FR) and body surface temperature (BST) were registered at 6 AM and 4 PM. It was observed increase in TR, FR and BST in the heat stress period (P 0.05) was observed for BST.
Citation format
FERREIRA, F., et al. Parâmetros fisiológicos de bovinos cruzados submetidos ao estresse calórico. ARQUIVO BRASILEIRO DE MEDICINA VETERINARIA E ZOOTECNIA, 2006, 58: 732–738.