1. Exposure to radiant heat caused dogs to pant and lose water by evaporation at rates of 40-70 g/hr. 2. When water was offered at intervals during the heating, the dogs drank at about half of the opportunities. The individual drinks were small but, by their repetition, loss of water by evaporation during heating was approximately matched by drinking. 3. Water given by stomach tube reduced drinking during a subsequent period of heating. 4. When water was offered more than 15 min after the end of a period of heating, after panting had ceased, drinking occurred only if the water loss exceeded 50-70 g, about 0-6% of the body water. This is regarded as drinking due to loss of water, beyond a threshold of dehydration necessary to stimulate drinking with the dog at rest. When water was offered during heating, drinking occurred with dehydration less than this threshold. 5. The drinking produced by heating was similar to that produced by running (O'Connor, 1975). When the animal ran under heat, panting was more severe and the water loss greater (85-150 g/hr); it was approximately matched by more drinking.
展开▼
机译：1.暴露在辐射热下，狗以40-70克/小时的速度蒸发而喘气并失去水分。 2.在加热过程中不时提供水时，狗饮水的机会约为一半。各个饮料很小，但通过重复进行，加热期间由于蒸发而损失的水分与饮用大致相当。 3.在随后的加热期间，胃管提供的水可减少饮酒。 4.加热结束后超过15分钟提供水时，停止喘气后，只有失水量超过50-70克（约占人体水分的0-6％）时才饮水。这被认为是由于失水造成的饮水，超过了在静止状态下刺激饮水所需的脱水阈值。如果在加热过程中提供水，则发生饮水且脱水少于该阈值。 5.加热产生的饮酒与跑步产生的饮酒相似（O'Connor，1975）。当动物在高温下奔跑时，气喘更加严重，水分流失也更大（85-150 g / hr）。大约与更多饮酒相匹配。
展开▼
