Table 2. Effects of humidity on pig behavior

	LH	MH	HH	SE	p-value
Basic behavior (min/hour)
Feed intake	5.31	5.19	5.48	0.04	0.871
Standing	7.58	7.41	7.62	0.03	0.498
Lying	43.66	44.02	43.89	0.07	0.685
Sitting	2.97	3.01	2.84	0.01	0.205
Singularity behavior (count/hour)
Drink water	4.76	4.92	4.88	0.03	0.681
Rooting	1.21c	1.77b	2.43a	0.02	0.047
Posture transition (lying-standing)	3.71	3.80	3.61	0.01	0.312
Posture transition (standing-lying)	3.55	3.76	3.56	0.02	0.195
Wallowing	6.12c	8.41b	9.84a	0.03	0.040
Biting	0.15	0.17	0.16	0.01	0.787

Six replicate pens per treatment, two pigs per pen.
Means in the same row with different superscripts differ (p < 0.05).
LH, low humidity, set relative humidity (45%)/actual relative humidity (44.8 ± 0.3%); MH, middle humidity, set relative humidity (60%)/actual relative humidity (60.8 ± 0.2%); HH, high humidity, set relative humidity (75%)/actual relative humidity (74.9 ± 0.3%).