TABLE 5.

E. coli counts in the feed, ileum, and colon^a

Location	E. coli count (log CFU g−1)e				SEMb	P value
	C	PRO	RPS	PRO-RPS
Feed (BIc)
Generic E. coli	2.62A	7.95B	2.58A	8.11B	1.56	0.021
ETEC E. coli K88	0.00	0.00	0.00	0.00	0.00	NDf
Probiotic E. coli	0.00A	7.45B	0.00A	7.36B	2.14	0.001
Feed (AId)
Generic E. coli	2.48A	8.00B	2.60A	8.00B	1.57	0.036
ETEC E. coli K88	0.00	0.00	0.00	0.00	0.00	ND
Probiotic E. coli	0.00A	6.48B	0.00A	6.00B	1.81	0.012
Ileum
Generic E. coli	6.38AB	4.91B	6.86A	5.01B	0.55	0.035
ETEC E. coli K88	3.31B	2.20C	4.85A	2.54BC	0.23	0.001
Probiotic E. coli	0.00A	3.70B	0.00A	4.03B	0.16	0.001
Colon
Generic E. coli	6.34	6.27	6.07	6.10	0.36	0.873
ETEC E. coli K88	4.99A	3.17B	5.17A	2.45C	0.19	0.001
Probiotic E. coli	0.00A	3.43B	0.00A	3.94B	1.06	0.043
Feces (BI)
Generic E. coli	6.21	7.57	7.81	8.60	1.00	0.436
ETEC E. coli K88	0.00	0.00	0.00	0.00	0.00	ND
Probiotic E. coli	0.00A	6.21B	0.00A	6.40B	1.82	0.001
Feces (AI)
Generic E. coli	7.40	6.66	6.82	6.84	0.40	0.617
ETEC E. coli K88	5.42A	3.10B	5.55A	3.38B	0.10	0.001
Probiotic E. coli	0.00A	3.90B	0.00A	3.98B	0.00	0.001

^aAnimals were fed experimental diets from 17 to 24 days of age but were not infected with E. coli K88 until they were 24 days of age.

^bPooled standard error of the mean.

^cBI, before inoculation, calculated from the day of weaning until inoculation (17 to 24 days of age).

^dAI, after inoculation, calculated from the day of weaning until inoculation (24 to 34 days of age).

^eMeans within rows without common letters differ (P < 0.05).

^fND, not determined.