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Update on footrot in south-west Germany.

M Younan1, H Both, W Müller

  • 1Egerton University, Kenya.

DTW. Deutsche Tierarztliche Wochenschrift
|March 23, 1999
PubMed
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Footrot in sheep is caused by Dichelobacter nodosus. Serovar B strains are most common in Germany, and virulent strains were found in half the flocks studied, indicating current vaccines are suitable.

Area of Science:

  • Veterinary Microbiology
  • Sheep Infectious Diseases
  • Bacterial Pathogenesis

Background:

  • Footrot is a contagious ovine foot disease caused by Dichelobacter nodosus.
  • Effective management strategies, including vaccination, are crucial for controlling ovine footrot.
  • Understanding the epidemiology and virulence of circulating D. nodosus strains is essential for vaccine efficacy.

Purpose of the Study:

  • To serotype and assess the virulence of Dichelobacter nodosus strains from sheep flocks in southwest Germany.
  • To determine the prevalence of different D. nodosus serovars and their association with virulence.
  • To evaluate the suitability of current commercial footrot vaccines for the studied sheep population.

Main Methods:

  • Isolation and identification of Dichelobacter nodosus strains from footrot-affected sheep.

Related Experiment Videos

  • Serotyping of D. nodosus isolates to determine serovar prevalence.
  • Virulence assessment of D. nodosus strains through laboratory or field-based methods.

    • Main Results:

    • A total of 82 D. nodosus strains were analyzed from 9 sheep flocks.
    • Serovar B was the predominant serovar, found in all flocks and comprising 64.4% of isolates.
    • Virulent strains were detected in 5 flocks, intermediate strains in all 9 flocks, and untypeable strains were avirulent.

    Conclusions:

    • Serovar B is the most prevalent Dichelobacter nodosus serovar in southwest German sheep flocks.
    • The presence of virulent and intermediate strains across multiple flocks supports the need for effective control measures.
    • Current commercial footrot vaccines are deemed appropriate for use in southwest German sheep populations based on these epidemiological findings.