- Volume 21 Issue 3
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Self-administration of an Analgesic Does Not Alleviate Pain in Beak Trimmed Chickens
- Freire, Rafael (School of Rural Science and Agriculture, University of New England) ;
- Glatz, Philip C. (Pig and Poultry Production Institute, South Australia Research and Development Institute) ;
- Hinch, Geoff (School of Rural Science and Agriculture, University of New England)
- Received : 2007.01.18
- Accepted : 2007.05.22
- Published : 2008.03.01
Beak trimming in laying hens is a routine practice in which about 1/3-1/2 of the upper and lower beak is removed with the aim of reducing cannibalism. This experiment aimed to identify if this procedure causes pain by examining self-administration of an analgesic (carprofen) and pecking behaviour in 80 laying pullets beak-trimmed by two different methods at one day of age using hot-blade cauterisation or infra-red cauterisation. We also tested a control treatment, pullets with intact beaks, and a positive control treatment of pullets beak trimmed at 10 weeks of age which were expected to experience some pain due to recent severing of the underlying nerves in the beak. At 11 weeks of age birds trimmed at 10 weeks of age pecked more (p<0.001) gently (
Beak Trimming;Analgesic;Hens;Neuropathic Pain;Carprofen
Supported by : Poultry Cooperative Research Centre
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