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Figure 3 | BMC Physiology

Figure 3

From: Daily and estrous rhythmicity of body temperature in domestic cattle

Figure 3

Daily measurements of body temperature over 3 estrous cycles. Shown are the records of body temperature of four representative cows measured at dusk (open circles) and dawn (closed circles) for 60 consecutive days during the summer (left) and winter (right). Vertical dashed lines indicate the days of estrus, as determined by observation of vaginal discharge, increased locomotor activity, and acquiescence to mounting by a bull.

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