Publicação
Pain evaluation and control after routine interventions in cattle
| Resumo: | Disbudding and castration are two routine interventions in cattle practice. Both can cause severe pain and cause poor welfare. Through plasma cortisol levels and behaviour evaluation we measured pain caused by different disbudding and castration methods. We also studied the efficacy of several anaesthesia and analgesia protocols. The main conclusions are: - Cortisol together with behaviour assessment is very useful in detecting calves in pain. - Certain behaviours are only shown by very young calves. - Vocalization should not be used as a sign of pain in calves. - Scoop disbudding causes long term pain and local anaesthesia is not efficient. - Hot-iron disbudding causes severe pain during the procedure but does not differ from paste disbudding in the next hours. Local anaesthesia plus analgesia does reduce pain cause by these methods. - Xylazine causes an increase in cortisol even if pain is not induced. - Pain caused by clamp-castration lasts for at least 48 hours and is only controlled by long acting analgesics. - Surgical castration causes intense pain but shorter if two incisions are made instead of just one. |
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| Autores principais: | Stilwell, George Thomas |
| Assunto: | Cattle Pain assessement Pain management Analgesia Cortisol Behaviour Castration Dehorning Bovino Avaliação de dor Controlo de dor Comportamento Castração Descorna |
| Ano: | 2009 |
| País: | Portugal |
| Tipo de documento: | tese de doutoramento |
| Tipo de acesso: | acesso aberto |
| Instituição associada: | Universidade de Lisboa |
| Idioma: | inglês |
| Origem: | Repositório da Universidade de Lisboa |
| Resumo: | Disbudding and castration are two routine interventions in cattle practice. Both can cause severe pain and cause poor welfare. Through plasma cortisol levels and behaviour evaluation we measured pain caused by different disbudding and castration methods. We also studied the efficacy of several anaesthesia and analgesia protocols. The main conclusions are: - Cortisol together with behaviour assessment is very useful in detecting calves in pain. - Certain behaviours are only shown by very young calves. - Vocalization should not be used as a sign of pain in calves. - Scoop disbudding causes long term pain and local anaesthesia is not efficient. - Hot-iron disbudding causes severe pain during the procedure but does not differ from paste disbudding in the next hours. Local anaesthesia plus analgesia does reduce pain cause by these methods. - Xylazine causes an increase in cortisol even if pain is not induced. - Pain caused by clamp-castration lasts for at least 48 hours and is only controlled by long acting analgesics. - Surgical castration causes intense pain but shorter if two incisions are made instead of just one. |
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