Threshold of Body Temperature for the Initiation of Evaporative Thermoregulation in Swamp Buffaloes Abruptly Exposed to High Environmental Temperatures

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Body temperature of buffaloes is highly correlated with the seasonal and diurnalchanges of air temperature, unlike in Holstein cattle. Furthermore, the stimulus ofexposure to a high environmental temperature for the initiation of the thermoregulatorymechanism via both respiratory and body surface vaporization is less effectiveand the degree of body temperature lability is greater in buffaloes than in cattle.Since active heat dissipation by respiratory and body surface vaporization is controlledby a thermostat-like mechanism located in the central nervous system it was deemedinteresting to determine the threshold of body core temperature at which such aevaporative cooling mechanism becomes active when buffaloes are abruptly exposed tohigh environmental temperatures.
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