Table 2
Effects of dietary supplementations of 100 ppm of ZnO without (BASAL) or with 120 ppm of apramycin (ANTIBIO), 2,500 ppm of ZnO (HIGH), and 100 ppm of the lipid-encapsulated ZnO (LE) on clinical signs of post-weaning pigs challenged with 5 × 10⁸ cfu of ETEC K88

Item	BASAL	ANTIBIO	HIGH	LE	SEM	P-value
Rectal temperature, °C
D 0	38.48	38.52	38.50	38.48	0.15^x
D 1	39.85^a	39.47^ab	39.22^b	39.57^ab
D 4	40.08^a	39.43^bc	39.22^c	39.63^b
D 7	39.75^a	39.32^b	38.98^bc	38.85^c
Overall¹	39.54^a	39.18^b	38.98^b	39.13^b	0.10	<0.01
Fecal consistency score²
D 0	1.50	1.67	1.83	1.50
D 1	2.83	2.67	2.33	2.50
D 2	2.67	2.83	2.33	2.50	0.22^x
D 4	2.50^a	2.17^a	2.17^a	1.50^b
D 7	2.50^a	1.83^b	1.67^b	1.67^b
Overall³	2.40^a	2.23^ab	2.07^b	1.93^b	0.11	0.04
Fecal shedding of E. coli, Log₁₀ cfu/g feces
D 1	7.00^a	5.90^b	5.35^b	5.58^b
D 4	6.86^a	5.71^b	5.22^bc	4.83^c	0.29^x
D 7	7.33^a	5.50^b	4.91^bc	4.25^c
Overall⁴	7.06^a	5.70^b	5.16^b	4.89^b	0.33	<0.01