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Related Experiment Videos

New method for objectively assessing lameness in broiler chickens.

C A Weeks1, T G Knowles, R G Gordon

  • 1Department of Clinical Veterinary Science, University of Bristol, Langford, Bristol BS40 5DU.

The Veterinary Record
|January 11, 2003
PubMed
Summary

A novel method measures how long broiler chickens stand in shallow water to assess lameness severity. This water-standing test strongly correlates with traditional gait scoring, offering a practical tool for flock health management.

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Area of Science:

  • Animal Science
  • Veterinary Medicine
  • Poultry Science

Background:

  • Lameness is a significant welfare and economic issue in broiler chickens.
  • Accurate assessment of lameness severity is crucial for effective management strategies.

Purpose of the Study:

  • To introduce and validate a new, objective method for assessing lameness severity in broiler chickens.
  • To compare the efficacy of the new method with conventional gait scoring techniques.

Main Methods:

  • A novel method involving measuring the latency of broiler chickens to lie down in shallow water was developed.
  • Over 750 broiler chickens (32-45 days old) were tested in commercial housing conditions.
  • Results were compared with traditional gait scoring methods.

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Main Results:

  • A highly significant correlation (P < 0.001) was found between gait scores and latency to lie down.
  • Sound birds stood for at least 15 minutes, while the majority of lame birds lay down within five minutes.
  • The new method demonstrated a clear distinction between sound and lame birds.

Conclusions:

  • The shallow water standing test provides a reliable and objective measure of lameness severity in broiler chickens.
  • This method offers a practical alternative or supplement to subjective gait scoring for flock health monitoring.
  • Implementing this assessment can aid in improving broiler welfare and reducing economic losses associated with lameness.