Article Text

Download PDFPDF
Effect of carprofen on lameness in broiler chickens
  1. D. McGeown, BSc1,
  2. T. C Danbury, BSc1,
  3. A. E. Waterman-Pearson, BVSc, PhD, FRCVS, DVA, DiplECVA, MRCA1 and
  4. S. C. Kestin, BSc1
  1. 1 Department of Clinical Veterinary Science, University of Bristol, Langford, Bristol BS40 5DU


Lameness is prevalent among broiler chickens and there is concern that it is chronically painful. The administration of an analgesic has been frequently used to identify pain in lame farm animals. Therefore, in this study the ability of lame and normal broiler chickens to traverse an obstacle course was tested after treatment with the analgesic, carprofen, a placebo saline injection or a control handling procedure. Sound birds traversed the course in approximately 11 seconds, irrespective of treatment. Lame birds took approximately 34 seconds to traverse the course, unless they received carprofen, which reduced their completion time to 18 seconds. Thus, carprofen substantially increased the speed of lame birds, providing evidence that birds with moderate lameness suffer pain when they walk.

Statistics from

Request Permissions

If you wish to reuse any or all of this article please use the link below which will take you to the Copyright Clearance Center’s RightsLink service. You will be able to get a quick price and instant permission to reuse the content in many different ways.