Table 1.

Effect of reproductive stage on thermoregulatory characteristics of sows exposed to incrementally increasing T_DB

Characteristics	Reproductive stage			SEM	P-value
	Nonpregnant	Mid-gestation	Late-gestation		R1	T2	R × T3	Contrast4
TS, °C	33.16	33.28	33.18	0.44	0.88	<0.01	0.95	0.86
TV, °C	38.25	38.23	38.27	0.14	0.97	<0.01	0.80	0.84
RR, brpm	15a	16a	23b	2	<0.01	<0.01	<0.01	<0.01
HR, bpm	69a	76b	84c	5	<0.01	<0.01	0.32	<0.01

¹Reproductive stage.

²Time.

³Reproductive stage × time interaction.

⁴Late-gestation vs. mid-gestation and nonpregnant.

^a–cLetters indicate differences (P ≤ 0.05) between LSM within a row for reproductive stage differences.