|Larson, D - IOWA STATE UNIVERSITY|
Submitted to: ARS Food Safety and Inspection Service Research Workshop
Publication Type: Abstract Only
Publication Acceptance Date: December 13, 1995
Publication Date: N/A
Technical Abstract: Neonatal piglets have been used as models to study human campylobacteriosis and helicobacteriosis. The purpose of this study was to determine the relative pathogenicity of the three Arcobacter species in 1-day-old CDCD piglets. In Experiment I, 8 piglets were divided into 4 groups. Each group received per os ATCC strains of Arcobacter butzleri, Arcobacter cryaerophilus 1B, Arcobacter skirrowii, or a field strain of Arcobacter butzleri (approx. 5 X 10**9 CFU per piglet). Rectal swabs were taken prior to infection and daily thereafter. At 24 h after inoculation, all pigs, except those given A. skirrowii, were shedding Arcobacter as determined by culture of rectal swabs and confirmation with the Arcobacter genus-specific probe. Stomach ulcers were present in the A. butzleri-infected pigs (n=4) necropsied on days 3 through 5. A. butzleri was recovered from the lung, kidney, ileum, and brain of some of these animals. A. cryaerophilus 1B was salso detected in rectal swabs for up to 7 days, but was not found in tissues. A. skirrowii cells were not detected in the feces by day 3 and were not isolated from tissues. In Experiment II, 8 piglets were divided into groups and were infected as described above. All piglets excreted Arcobacter in the feces by 24 h. Only the A. butzleri-infected pigs (n=4), which had received either the ATCC reference strain or the field isolate Yard J/c, shed Arcobacter cells until necropsy. Arcobacter spp. were cultured from the liver, kidney, ileum, and brain of only the A. butzleri- infected piglets. These data suggest that A. butzleri can colonize the neonatal pigs.