Table 1. Effects of temperature on pig behavior

Items	T1	T2	T3	T4	SE	p-value
Basic behavior (min/hour)
Feed intake	5.32^a	5.26^ab	4.98^b	4.17^c	0.02	0.003
Standing	7.69^a	7.21^b	6.45^c	6.39^c	0.01	0.028
Lying	43.86^b	43.91^b	45.16^a	45.84^a	0.03	0.039
Sitting	2.75	2.68	2.97	3.02	0.01	0.115
Singularity behavior (count/hour)
Drink water	4.81^c	4.89^c	5.63^b	7.11^a	0.02	0.011
Rooting	0.97	1.05	1.12	1.38	0.01	0.068
Posture transition (lying-standing)	3.56	3.49	3.12	3.87	0.03	0.566
Posture transition (standing-lying)	3.59	3.43	3.17	3.81	0.02	0.491
Wallowing	5.13^c	5.71^bc	6.23^b	7.89^a	0.02	0.012
Biting	0.07^b	0.09^b	0.16^ab	0.41^a	0.01	0.362

Six replicate pens per treatment, two pigs per pen.
Means in the same row with different superscripts differ (p < 0.05).
T1, set temperature (18°C)/actual temperature (17.8 ± 0.4°C); T2, set temperature (22°C)/actual temperature (21.7 ± 0.3°C); T3, set temperature (26°C)/actual temperature (25.9 ± 0.2°C); T4, set temperature (30°C)/actual temperature (29.6 ± 0.3°C).