Abstract
Effects of abrupt transfer from normal (18.7°C) to high environmental temperature (35°C, fixed) on body temperature and thermoregulatory responses in swmap buffaloes were compared with those in Holstein cattle. The stimulus of exposure to a high environmental temperature to initiate thermoregulatory mechanisms via both respiratory and body surface vaporization was less effective and the degree of body temperature lability greater in buffaloes than Holsteins. From the results obtained, it may be concluded that the cooling setting point of the thermostat in the brain is much higher above the normal body temperature (37.7°C) in buffaloes, unlike in Holsteins.
