Table 5.

The differences in (LSM ± SEM min) time for water quantity (5.7 L, 11.4 L, 22.7 L), water temperature (1.7 °C, 7.2 °C, 15.6 °C and 29.4 °C) interaction on time required to return to baseline reticulorumen temperature (°C) ¹ for feed restricted, once daily drenched pregnant cows (n = 12) explained with the equation: Time to Return to Baseline = 4.33 + (16.06 × Water Quantity (L)) − (0.01 × Water Temperature (°C)) − (0.40 × (Water Quantity (L) × Water Temperature (°C)).

Water Quantity L	Water Temperature °C	LSM ± SEM (min)	p-Value
5.7	1.7	25.3 ± 11.0	0.01
5.7	7.2	20.0 ± 11.0	0.10
5.7	15.6	26.7 ± 11.0	0.01
5.7	29.4	7.7 ± 11.0	0.50
11.4	1.7	50.0 ± 9.5	<0.001
11.4	7.2	45.3 ± 9.5	<0.001
11.4	15.6	35.0 ± 9.5	0.01
11.4	29.4	17.3 ± 9.5	0.10
22.7	1.7	103.3 ± 9.5	<0.001
22.7	7.2	76.3 ± 9.5	<0.001
22.7	15.6	58.0 ± 9.5	<0.001
22.7	29.4	31.8 ± 9.5	<0.001

¹ A cow-specific baseline temperature range (BTR) was calculated using the mean ± 2 SD of all reticuloruminal temperature recorded 48 h before the beginning of the study. This BTR was used to define the TIME when reticuloruminal temperature returned to baseline following a drinking event.