title: The effect of slurry storage and anaerobic digestion on survival of pathogenic bacteria.
abstract: The decline in viable numbers of Salmonella typhimurium, Yersinia enterocolitica and Listeria monocytogene in beef cattle slurry is temperature-dependent; they decline more rapidly at 17 degrees C than at 4 degrees C. Mesophilic anaerobic digestion caused an initial rapid decline in the viable numbers of Escherichia coli, Salm. typhimurium, Y. enterocolitica and L. monocytogenes. This was followed by a period in which the viable numbers were not reduced by 90%. The T90 values of E. coli, Salm. typhimurium and Y. enterocolitica ranged from 0.7 to 0.9 d during batch digestion and 1.1 to 2.5 d during semi-continuous digestion. Listeria monocytogenes had a significantly higher mean T90 value during semi-continuous digestion (35.7 d) than batch digestion (12.3 d). Anaerobic digestion had little effect in reducing the viable numbers of Campylobacter jejuni.
authors.affiliation: School of Biology and Biochemistry, Queen's University of Belfast, Medical Biology Centre, Northern Ireland, UK.
authors.forename: T E
authors.initials: TE
authors.lastname: Kearney
authors.forename: M J
authors.initials: MJ
authors.lastname: Larkin
authors.forename: P N
authors.initials: PN
authors.lastname: Levett
mesh_terms: D000693:Anaerobiosis; D000818:Animals; D016123:Campylobacter jejuni / Q000254:growth & development*; D002417:Cattle; D015169:Colony Count, Microbial; D004755:Enterobacteriaceae / Q000254:growth & development*; D004926:Escherichia coli / Q000254:growth & development; D008089:Listeria monocytogenes / Q000254:growth & development*; D008372:Manure / Q000382:microbiology*; D012486:Salmonella typhimurium / Q000254:growth & development; D013696:Temperature; D015008:Yersinia enterocolitica / Q000254:growth & development
chemical_list: D008372:Manure