Table 4. The effects of pre-weaning environmental enrichment-based materials on diarrhea incidence in pigs

	Control1)		WBW-1		WBW-2		SEM	p-value
	X2)	O	X	O	X	O		BWN	AWN	Interaction
Diarrhea incidence
d 7	3.58	3.02	3.31	2.92	3.29	2.80	0.41	0.676	0.058	0.958
d 14	2.66	2.75	2.85	2.99	2.79	2.46	0.47	0.667	0.913	0.747
d 28	2.15	2.32	2.52	2.52	2.32	2.38	0.57	0.787	0.823	0.976

Control, no environmental enrichment installation during lactation; WBW-1, environmental enrichment installation 1 week before weaning; WBW-2, environmental enrichment installation 2 weeks before weaning.
X, without object installation as environmental enrichment after weaning; O, with object installation as environmental enrichment after weaning.