Occurrence of foodborne bacteria in Alberta feedlots.
The occurrence of generic Escherichia coli, E. coli O157, Salmonella, and Campylobacter in cattle manure, beef carcasses, catch basin water, and soils receiving manure application was determined in 21 Alberta feedlots. In cattle manure, generic E. coli (98%, 2069/2100) and Campylobacter (76%, 1590/2100) were frequently detected; E. coli O157 (7%, 143/2100) and Salmonella (1%, 20/2100) were less frequently detected. Samples from beef carcasses in the cooler following Hazard Analysis Critical Control Point interventions yielded only 1 isolate each of generic E. coli and Campylobacter (1/1653) and no Salmonella (0/1653). Catch basin water specimens were positive for generic E. coli in both the spring (62%, 13/21) and the fall (52%, 11/21). Other bacteria were detected only in the spring water specimens, including E. coli O157 (29%, 6/21), Salmonella (5%, 1/21), and Campylobacter (52%, 11/21). Generic E. coli was frequently isolated from soil specimens (30%, 27/88), but E. coli O157 was not found in soil samples obtained in the spring and was only occasionally detected in the fall samples (9%, 3/32). Salmonella were occasionally found in the soil specimens collected in the spring (3%, 2/56), but not in the fall season (0/32). Campylobacter jejuni was frequent in cattle manure (66%, 1070/1623), but rare in carcass and environmental samples. E. coli O157 and Salmonella were rarely detected in cattle or the environment. Generic E. coli and Salmonella were rarely detected on carcasses.
Dr. Joyce Van Donkersgoed Veterinary Services Inc., Box 253, Coaldale, Alberta T1M 1M3, Canada. donkersg@telusplanet.net
Joyce
J
Van Donkersgoed
Valerie
V
Bohaychuk
Thomas
T
Besser
Xin-Ming
XM
Song
Bruce
B
Wagner
Dale
D
Hancock
David
D
Renter
David
D
Dargatz
D000416:Alberta; D000818:Animals; D002167:Campylobacter / Q000302:isolation & purification; D002417:Cattle / Q000382:microbiology*; D015169:Colony Count, Microbial / Q000662:veterinary; D003257:Consumer Product Safety; D004783:Environmental Microbiology; D004926:Escherichia coli / Q000302:isolation & purification; D019453:Escherichia coli O157 / Q000302:isolation & purification; D005260:Female; D005506:Food Contamination / Q000517:prevention & control*; D006801:Humans; D008297:Male; D008372:Manure / Q000382:microbiology*; D015995:Prevalence; D012475:Salmonella / Q000302:isolation & purification; D012621:Seasons; D012988:Soil Microbiology; D014871:Water Microbiology
D008372:Manure