Campylobacter and farm dairy effluent irrigation

摘要

Abstract Campylobacter were studied at a mole‐tile drained farm over a 12‐month period. Farm dairy effluent was applied to the farm in January, October, and November. In January, herd 1 was on the farm and effluent that contained 103 campylobacter 100 ml?1 was sourced from a storage pond. In October and November herd 2 was on the farm and effluent that contained 105 and 106 campylobacter 100 ml?1 respectively was sourced from the dairy shed. In January and November, when irrigation caused preferential flow, concentrations in the drainage water were similar to those in the applied effluent, creating a potential for water contamination. C. jejuni was the predominant campylobacter species recovered. Only one subspecies type (i.e., one Penner serotype and one PFGE type) was observed in the effluent, drainage water, and soil samples collected after the January application. This recovery of a single subtype allowed tracing from effluent into drainage water and soil. In contrast, several subspecies types were ob...