Table 3.

Prevalence of APEC isolated from different organs in each treatment.

Treatment	Sampling organ (%)
	Heart	SEM	Liver	SEM	Spleen	SEM	Yolk sac	SEM
Marek's vaccine (MV)	27.5	7.10	22.5	6.31	27.5	15.10	33.3	11.97
MV and L. animalis	27.5	7.10	32.5	8.05	22.5	11.21	38.5	15.80
MV and L. reuteri	32.5	7.88	30.0	7.67	22.5	11.21	11.1	6.81
MV and L. rhamnosus	22.5	6.21	20.0	5.80	22.5	11.21	21.1	9.20
P	0.757		0.448		0.926		0.164
Day
0	5.0c	3.39	5.0c	3.31	0	0	15.0b	5.37
14	52.5a	7.94	57.5a	7.91	35.0	7.76	39.3a	10.50
28	35.0a,b	7.57	20.0b,c	6.28	35.0	7.76
42	17.5b,c	5.98	22.5b	6.58	25.0	6.85
P	0.0003		<0.0001		0.747		0.015

^a–cMeans in a column not sharing a common superscript were different (P < 0.05).

Abbreviation: APEC, avian pathogenic Escherichia coli.