Six suspensions of non-culturable Campylobacter spp. were administered
by gavage to day-of-hatch chicks. Four non-culturable isolates of Cam
pylobacter spp. were found to colonize low numbers (5/79) of 1-week-ol
d chicks, while two isolates did not (0/30). The original and recovere
d Campylobacter spp. isolates were serotyped and examined by restricti
on enzyme analysis. Evidence of clonality of two Camp. jejuni isolates
was demonstrated.