Table 5. Average fecal score of INF-CO, INF-TA, NINF-CO, and NINF-TA piglets^a,b from d 0–7 post infection (daily) and at d 14.

Infection	NINF		INF		Pooled SE	P-valuesc
Diet	CO	TA	CO	TA		I	D	days	D × days
days
0	2.7	1.7	2.3	2.1	0.12	0.19	< 0.001	< 0.001	< 0.001
1	3.2	2.3	3.7	3.2	0.17
2	3.2	2.9	3.4	3.2	0.17
3	2.9	2.7	3.7	3.2	0.18
4	3.2	2.2	3.6	2.9	0.16
5	2.9	2.3	3.1	2.8	0.11
6	3.2	2.5	2.9	2.4	0.11
7	2.8	2.7	2.4	2.2	0.12
14	2.2	1.7	1.9	1.7	0.08

^a At four days post weaning, INF-CO and INF-TA piglets were infected orally with 5 ml of the ETEC suspension containing 10⁸ CFU/ml (INF) and fed either an unsupplemented standard control starter diet or a control standard diet supplemented with 1% chestnut-tannin extract from weaning (day -4) for 18 days, respectively. Piglets in the NINF-CO and NINF-TA groups were fed the same diets for the same time span as previously described but received 5 ml of PBS orally.

^b Results are presented as means and pooled standard error (SE).

^c P-values for the main factors infection (I), diet (D), days, and diet × days interaction (D × days).