Figure 2.

Mean body temperature of 8 calves measured every 3 hours. Values shown are means ± SEM of the body temperature of 8 calves measured every 3 h during the first 10 days of life (top) and during days 52 through 61 (bottom). The white and dark bars at the top of each panel indicate the duration of the light and dark phases of the light-dark cycle, respectively.