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Publication
Pneumonia enzoótica em vitelos- análise de caso clínico
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Advisor(s)
Abstract(s)
As doenças respiratórias em bovinos são as causas mais importantes de morbidade e
mortalidade em bovinos de carne e de leite. Podem afetar bovinos de qualquer idade e fase produtiva,
mas as perdas económicas estão geralmente associadas a vitelos. Com este trabalho pretende-se
discutir e descrever um caso clínico de uma pneumonia enzoótica causada por uma bactéria comensal
da nasofaringe dos ruminantes: Mannheimia haemolytica.
O caso clínico em análise, refere-se a um surto ocorrido numa exploração de bovinos de carne
de raça Limousine, na região Auvergne-Rhône-Alpes, no fim do mês de dezembro de 2022,
nomeadamente, num lote de vitelos de dois meses, em regime de estabulação, dos quais três morreram
num período de quatro dias.
Para superar esta situação, foi implementado um protocolo de metafilaxia com tulatromicina
paralelamente ao envio em laboratório das amostras recolhidas durante as necrópsias.
O diagnóstico definitivo foi realizado por Polymerase Chain Reaction (PCR) e revelou o agente
Mannheimia haemolytica.
Assim, esta Dissertação de Mestrado tem como objetivo recordar os aspetos clínicos da
Pneumonia Enzoótica, seu controlo e falar das limitações das boas práticas clínicas em contexto prático
como os riscos do uso da metafilaxia, considerando a realidade das resistências aos antibióticos de
hoje em dia.
Respiratory diseases in cattle are the major cause of morbidity and mortality in both beef and dairy cattle. They can affect cattle of any age and productive stage, but economic losses are generally associated with calves. This work intends to discuss and describe a clinical case of an enzootic pneumonia caused by a commensal bacteria from the nasopharynx of ruminants: Mannheimia haemolytica. The clinical case under analysis refers to an outbreak that occurred on a herd of beef cattle of the Limousine breed, in the Auvergne-Rhône-Alpes region, at the end of December of 2022, namely in a batch of two-month-old calves, on a stable, of which three died within a period of four days. To overcome this situation, a metaphylaxis protocol with tulathromycin was implemented in parallel with the sending of samples collected during necropsies to the laboratory. The definitive diagnosis was performed by Polymerase Chain Reaction (PCR) and revealed the agent Mannheimia haemolytica. Thus, this Master's Dissertation aims to recall the clinical aspects of Enzootic Pneumonia, its control and talk about the limitations of good clinical practices in a practical context, such as the risks of using metaphylaxis, considering the reality of resistance to antibiotics today.
Respiratory diseases in cattle are the major cause of morbidity and mortality in both beef and dairy cattle. They can affect cattle of any age and productive stage, but economic losses are generally associated with calves. This work intends to discuss and describe a clinical case of an enzootic pneumonia caused by a commensal bacteria from the nasopharynx of ruminants: Mannheimia haemolytica. The clinical case under analysis refers to an outbreak that occurred on a herd of beef cattle of the Limousine breed, in the Auvergne-Rhône-Alpes region, at the end of December of 2022, namely in a batch of two-month-old calves, on a stable, of which three died within a period of four days. To overcome this situation, a metaphylaxis protocol with tulathromycin was implemented in parallel with the sending of samples collected during necropsies to the laboratory. The definitive diagnosis was performed by Polymerase Chain Reaction (PCR) and revealed the agent Mannheimia haemolytica. Thus, this Master's Dissertation aims to recall the clinical aspects of Enzootic Pneumonia, its control and talk about the limitations of good clinical practices in a practical context, such as the risks of using metaphylaxis, considering the reality of resistance to antibiotics today.
Description
Keywords
Caso clínico Mannheimia heamolytica Metafilaxia Pneumonia Vitelo Calf Clinical case Mannheimia heamolytica Metaphylaxis Pneumonia