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Alterações anátomo-patológicas em aves de rapina : estudo comparativo entre a eletrocussão e outras causas de ingresso em centros de recuperação
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Orientador(es)
Resumo(s)
A eletrocussão é uma das mais importantes causas de mortalidade de aves de rapina e do seu ingresso nos centros de recuperação de animais selvagens. Trata-se de uma temática amplamente estudada no âmbito da biologia da conservação mas pouco abordada em medicina veterinária.
O principal objetivo deste trabalho consistiu na identificação de alterações resultantes de eletrocussão ao exame de necropsia e histopatológico. Para isso, foram realizadas necropsias a 29 aves de rapina, que foram divididas em 2 grupos, um de aves eletrocutadas (n = 17) e outro de aves não eletrocutadas (n = 12), por forma a averiguar se existiriam diferenças significativas nas alterações encontradas entre os dois grupos.
Ao exame externo, foi identificada a presença de pele e penas queimadas, necrose de tecidos moles e a presença de fraturas, verificando-se uma associação estatística significativa (p <0,05) entre estas alterações e a eletrocussão. A nível do exame interno predominaram alterações de natureza vascular e inflamatória, não tendo sido observadas diferenças significativas entre os grupos. Uma possível explicação para estes resultados prende-se com a natureza inespecífica dos achados, que são semelhantes em aves vítimas de eletrocussão e trauma.
Como tal, neste trabalho foram encontradas alterações compatíveis com eletrocussão já descritas na literatura, contudo, devido ao seu cariz inespecífico, não foi possível a sua distinção de outras causas de morte, como o trauma. Justifica-se continuar a investigação da presença de alterações resultantes de eletrocussão, particularmente ao exame interno, com vista a uma melhor compreensão dos mecanismos fisiopatológicos de lesão elétrica.
ABSTRACT - ANATOMOPATHOLOGICAL FINDINGS IN BIRDS OF PREY – COMPARATIVE STUDY BETWEEN ELECTROCUTION AND OTHER ADMISSION CAUSES IN WILDLIFE REHABILITATION CENTRES - Electrocution is one of the main causes of mortality of birds of prey and their admission into wildlife rehabilitation centres. This thematic is the focus of extensive research in the scope of wildlife conservation biology but there is scarce information in the field of veterinary medicine. The main purpose of this work was to identify, at necropsy and histopathological exam, lesions possibly caused by. For that, 29 birds of prey were divided into 2 groups, one of electrocuted raptors (n = 17) and the other of non-electrocuted raptors (n =12), with the aim of determining if there were significant differences between the findings of both groups. At necropsy, external findings such as the presence of burnt feathers/skin, soft tissue necrosis and presence of fractures/luxations had a significant statistical association (p <0,05) with electrocution. As for the internal examination, there was a predominance of vascular and inflammatory lesions and there were no significant statistical differences between both groups. One possible justification for this is that the findings of electrocution are non-specific and therefore very similar to those that can be found as a consequence of other causes of mortality, such as trauma. Thus, there were observed lesions compatible with electrocution which have been previously reported in the literature, however, due to their non-specific nature it wasn’t possible to differentiate them from other causes of mortality. For this reason it would be importante to continue the investigation of electrocution lesions, specially at internal examination, for a better understanding of the physiopathological mecanisms involved in electrical injury.
ABSTRACT - ANATOMOPATHOLOGICAL FINDINGS IN BIRDS OF PREY – COMPARATIVE STUDY BETWEEN ELECTROCUTION AND OTHER ADMISSION CAUSES IN WILDLIFE REHABILITATION CENTRES - Electrocution is one of the main causes of mortality of birds of prey and their admission into wildlife rehabilitation centres. This thematic is the focus of extensive research in the scope of wildlife conservation biology but there is scarce information in the field of veterinary medicine. The main purpose of this work was to identify, at necropsy and histopathological exam, lesions possibly caused by. For that, 29 birds of prey were divided into 2 groups, one of electrocuted raptors (n = 17) and the other of non-electrocuted raptors (n =12), with the aim of determining if there were significant differences between the findings of both groups. At necropsy, external findings such as the presence of burnt feathers/skin, soft tissue necrosis and presence of fractures/luxations had a significant statistical association (p <0,05) with electrocution. As for the internal examination, there was a predominance of vascular and inflammatory lesions and there were no significant statistical differences between both groups. One possible justification for this is that the findings of electrocution are non-specific and therefore very similar to those that can be found as a consequence of other causes of mortality, such as trauma. Thus, there were observed lesions compatible with electrocution which have been previously reported in the literature, however, due to their non-specific nature it wasn’t possible to differentiate them from other causes of mortality. For this reason it would be importante to continue the investigation of electrocution lesions, specially at internal examination, for a better understanding of the physiopathological mecanisms involved in electrical injury.
Descrição
Dissertação de Mestrado Integrado em Medicina Veterinária
Palavras-chave
Aves de rapina eletrocussão necropsia histopatologia CERVAS CERAS centros de recuperação Portugal Birds of prey electrocution necropsy histopathology wildlife rehabilitation centres
Contexto Educativo
Citação
Botelho, A.E.S.S. (2017). Alterações anátomo-patológicas em aves de rapina : estudo comparativo entre a eletrocussão e outras causas de ingresso em centros de recuperação. Dissertação de mestrado. Universidade de Lisboa, Faculdade de Medicina Veterinária, Lisboa.
Editora
Universidade de Lisboa, Faculdade de Medicina Veterinária