TABLE 2.

Campylobacter and bacteriophage isolation from cecal contents of three free-range birds removed from the flock at 3- or 4-day intervals over 56 days

Age (days)	Bird 1			Bird 2			Bird 3
	Species isolated	PFGE MRPa	Phage or lytic activityb	Species isolated	PFGE MRPa	Phage or lytic activityb	Species isolated	PFGE MRPa	Phage or lytic activityb
8c	C. jejuni	F1	−	C. jejuni	F1	−	C. jejuni	F1	−
14	C. jejuni	F2	−	C. jejuni	F2	−	C. jejuni	F2	−
17	C. jejuni	F2	−	C. jejuni	F2	−	C. jejuni	F2	−
21	C. jejuni	F2	−	C. jejuni	F2	−	C. jejuni	F2	φ1B
24	C. jejuni	F2	−	C. jejuni	F2	−	C. jejuni	F2	−
28	C. jejuni	F2	ZL	C. jejuni	F2	ZL	C. jejuni	F3	ZL
31	C. jejuni	F3	−	C. jejuni and C. coli	F3, 4	−			−
35	C. coli	F4	ZL	C. coli	F4	−	C. coli	F4	−
38	C. coli	F4	−	C. coli	F4	−	C. coli	F4	−
42	C. coli	F4, 5	−	C. coli	F4	−	C. coli	F4, 6	−
45	C. coli	F4	ZL	C. coli	F4	−	C. coli	F4	−
49	C. coli	F7, 8	ZL	C. coli	F4	ZL	C. coli	F4, 9	ZL
52	C. coli	F4	ZL	C. coli	F4	ZL	C. jejuni and C. coli	F2, 8	−
56	C. jejuni	F2	−	C. coli	F4	−	C. coli	F4	−

^aPFGE MRP was the arbitrary number given to each different PFGE MRP identified when genomic DNA was digested with the SmaI restriction enzyme.

^bPhage or lytic activity classified as follows: the single propagatable bacteriophage isolate was numbered φ1B, −, no lytic activity; ZL, non-propagatable zone of lysis.

^cAt early time points the campylobacters were not enumerated from ceca but isolated from fresh voided excreta.