, Volume 41, Issue 9, pp 1132-1134

Neuroma formation and abnormal afferent nerve discharges after partial beak amputation (beak trimming) in poultry

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Summary

Following partial amputation of the beak recordings were taken of the electrical activity from single afferent fibers of the intramandibular nerve. A total of 192 single afferent fiber units were isolated of which 47 were classified as nociceptors, with an abnormal pattern of discharge, and 89 were abnormal spontaneously active units. Following amputation neuromas were developing by 15 days after surgery and they were well formed by 20 to 30 days. The presence of neuromas together with abnormal spontaneous activity originating from them raise serious welfare questions concerning beak trimming.

Acknowledgment. We thank Louise Hunter for her technical assistance and J. B. is indebted to the AFRC and BEMB for financial support during the tenure of his studentship.