Fig. 1

Relationship between ambient temperature (AT) and body temperature (BT) in lactating cows and nulliparous heifers. Values within parentheses represent the number of observations of BT for each group evaluated for each degree of AT. Calculated linear regression for cows was BT = 0.11AT + 36.49 (dashed line) and for heifers was BT = 0.02AT + 38.05 (solid line). Adapted from Sartori et al. [23].