Table 1.

Experimental groups

Parameter	Experiment number
	1, 3, and 5	2 and 4
Inoculum from PES1-affected poults at age	≤2 wk	4 to 6 wk
Number of birds in each group2	16	10
Birds sampled at DPI3	5, 10, and 15	10 and 20

¹PES = poult enteritis syndrome.

²The number of groups in each experiment was 4, namely A, B, C, and D.

³The number of poults sampled in each group at each interval was 5. DPI = days postinoculation.