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Temporal aspects of foot-pad dermatitis in Swedish broilers

C Ekstrand1, T E Carpenter

  • 1Department of Animal Environment and Health, Faculty of Veterinary Medicine, Swedish University of Agricultural Sciences, Skara, Sweden. Lotta.Ekstrand@hmh.slu.se

Acta Veterinaria Scandinavica
|October 27, 1998
PubMed
Summary

Swedish broiler foot-pad dermatitis prevalence decreased significantly over two years. Seasonal effects and a general downward trend explained nearly 60% of the variation in foot-pad scores.

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Area of Science:

  • Animal Science
  • Veterinary Epidemiology

Background:

  • Foot-pad dermatitis (FPD) is a significant welfare concern in broiler chickens.
  • Understanding temporal disease patterns is crucial for effective management strategies.

Purpose of the Study:

  • To analyze the temporal trends and seasonal variations in foot-pad dermatitis (FPD) in Swedish broilers.
  • To evaluate the utility of time series analysis for disease surveillance in poultry.

Main Methods:

  • Utilized a 2-year foot-health surveillance program dataset from Swedish broilers.
  • Employed classical multiplicative decomposition time series analysis to assess seasonal effects and trends.
  • Recorded variables included producer, breed, feed, region, abattoir, and date of slaughter.

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Main Results:

  • A significant and consistent decrease in severe FPD prevalence was observed over the study period.
  • Time-based factors explained 58.5% of the variation in total foot-pad scores.
  • Seasonal components (48.7%) and a trend-cycle (10.4%) were identified as major contributors to FPD variation.
  • Significant temporal pattern differences were noted across slaughterhouses, feed suppliers, and regions.

Conclusions:

  • Time series analysis is a valuable tool for evaluating poultry disease intervention programs and projecting future disease trends.
  • Seasonal effects play a substantial role in broiler foot-pad health, alongside a general decreasing trend.
  • Heterogeneity in temporal FPD patterns highlights the need for localized management approaches.