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Growth and survival of non-O157:H7 Shiga-toxin-producing Escherichia coli in cow manure
- Source :
- Journal of Applied Microbiology, Journal of Applied Microbiology, Wiley, 2006, 102, pp.89-99. ⟨10.1111/j.1365-2672.2006.03059.x⟩
- Publication Year :
- 2006
- Publisher :
- HAL CCSD, 2006.
-
Abstract
- Aims: The main objective of this study was to evaluate the behaviour of non-O157:H7 Shiga-toxin-producing Escherichia coli (STEC) strains in cow manure. Methods and Results: A mixture of eight green-fluorescent-protein-labelled STEC strains was inoculated around 106–107 CFU g−1 into four manure heaps. Two heaps were regularly turned and the two others remained unturned. STEC counts and physical parameters (temperature, pH, moisture content and oxido-reduction potential) were monitored for 1000 manure samples. The highest mean pH values were obtained near the surface at the base of all manure heaps. At the surface, the moisture content decreased from 76·5% to 42% in turned heaps. Temperatures reached 65°C near the main body of all manure heaps, and only 35°C near the superficial parts located at the base of them. These two sites (the centre and the base) were associated with D values for the STEC counts of 0·48 and 2·39 days, respectively. We were able to detect STEC strains during 42 days in turned manure heaps and during at least 90 days in unturned ones. Conclusions: These results emphasize the long-term survival of non-O157:H7 STEC in cow manure. Significance and Impact of the Study: Good management practices (e.g. turning) should be respected in order to minimize the risk of environmental contamination by STEC.
- Subjects :
- [SDV.OT]Life Sciences [q-bio]/Other [q-bio.OT]
Genetic Vectors
Colony Count, Microbial
Biology
Shiga Toxins
Applied Microbiology and Biotechnology
Non o157
Microbiology
03 medical and health sciences
chemistry.chemical_compound
Animal science
Shiga-like toxin
Escherichia coli
Animals
Shiga toxin-producing Escherichia coli
Management practices
030304 developmental biology
2. Zero hunger
0303 health sciences
030306 microbiology
Inoculation
Temperature
Water
General Medicine
Hydrogen-Ion Concentration
Contamination
Manure
chemistry
Cattle
Oxidation-Reduction
Cow dung
Plasmids
Biotechnology
Subjects
Details
- Language :
- English
- ISSN :
- 13645072 and 13652672
- Database :
- OpenAIRE
- Journal :
- Journal of Applied Microbiology, Journal of Applied Microbiology, Wiley, 2006, 102, pp.89-99. ⟨10.1111/j.1365-2672.2006.03059.x⟩
- Accession number :
- edsair.doi.dedup.....442cb4d7b8950cf10261025e42327b93