Study of E. coli Serotypes Linked to Oedema Disease in Pigs
Author Information
Author(s): Sigbrit Mattsson, Per Wallgren
Primary Institution: National Veterinary Institute, SVA
Hypothesis
The study aims to compare E. coli isolates within serotypes O138, O139, and O141 with respect to diversity.
Conclusion
The study found that dominating biochemical phenotypes of E. coli associated with oedema disease are stable over time, but there is also variation indicating the need for ongoing monitoring.
Supporting Evidence
- Dominating biochemical phenotypes were found to comprise over 65% of the isolates within each serotype.
- Historical samples from the 1960s and 1970s showed similar dominant BPTs as those found in the 1990s.
- Only 2 out of 35 healthy weaners in a herd affected by oedema disease tested positive for E. coli O139.
Takeaway
This study looked at different types of E. coli that make pigs sick and found that some types are very common and stay the same over time, while others change.
Methodology
The study used biochemical fingerprinting to analyze E. coli strains from faecal samples of pigs collected over several years.
Limitations
The study may not account for all variations in E. coli strains due to the focus on specific serotypes and historical samples.
Participant Demographics
Pigs younger than 12 weeks from various herds in Sweden.
Digital Object Identifier (DOI)
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