Studies on the Change of Body Temperature of the Animals under the Abnormal Environment

1. Change of body temperature by the direct sunshine of the rats placed outdoor

Abstract

Seventy-two Wistar strain male rats, weighing 150-180g, were used. The change of the body temperature of the rats placed outdoor was measured, and the lethal temperature of them was obtained.
The results obtained were as follows:
1) At the atmospheric temperature of 30-35°C under the direct sun beam, all of the animals died, and average lethal body temperature of the rats was 44°C.
2) At 29-33°C of atmospheric temperature, even under the direct beam, 4 rats out of 14 have survived.
3) The distribution of the lethal body temperature of rats after the exposure to the direct sunshine was as follows:
43.6-44.0°C 33.3%
43.1-43.0 25.0
42.6-43.0 25.0
42.1-42.5 12.5
41.5-41.6 4.2
4) When shaded, all the rats survived and their diurnal body temperature never exceeded 38.8°C.