Hallazgos anatomopatológicos en equinos y mulares de la región patagónica, afectados de mal seco

Article · January 1998with6 Reads
Abstract
SUMMARY PATHOLOGICAL FINOINGS IN HORSES ANO MULES WITH "MAL SECO", A GRASS SICKNESS-LIKE SYNOROME, IN PATAGONIA REGION, ARGENTINA- Mal seco is a disease that affects horses and mules grazing in the Patagonia region of Argentina. Seven horses and two mules were necropsied and histopathological studies carried out. The digestive tract presented the most striking findings. The stomach was distended with a fetid. greenish fluid. The large colon. and in some cases the caecum. were dilated by a large amount of dry. impacted, acid smelling. dark-coated contents, resembling a stack of coins. Foca' necrosis of the epithelium with bacterial colonization was consistently found in oesophagus, stomach, small intestine and large intestine. Loss of basophilia. margination of nuclei and a rounded outline to the neuronal body was observed in neurones of the ventral horn of the spinal cord. Slight demyelination was also observed in the spinal cord. The information gained in this study compared with that reported previously by the authors. provide support to the suggestion that Mal seco and Grass sickness are similar diseases.
  • [Show abstract] [Hide abstract] ABSTRACT: Equine haemorrhagic enteritis attributed to Clostridium perfringens type A. | The death of horses with clinical symptoms of colic is common, especially in confined and for sport animals. Since a small percentage of death horses due to colics are necropsied and sampled, it prevents Vets to reach a final diagnosis and to establish the cause of death. The aim of the present work was to describe the clinical, histopathological and bacteriological findings of a horse that died after having colics. The most important findings observed during necropsy were rupture of the stomach, dark red colour of the small intestine with increased wall thickness and a yellowish colour of the liver with nutmeg appearance. Clostridium perfringens type A was isolated from the liver. While the role of C. perfringens in intestinal infections in horses is controversial, in this case information on the possible relationship between the presence of this bacterium in cases of severe haemorrhagic enteritis or enterotoxemias in horses is provided. It is possible that hemorrhagic enteritis is more frequent than expected; therefore there is a need to be alert on the occurrence of this disease in horses with colics.Resumen La muerte de equinos con cuadros clínicos de cólico es frecuente, especialmente en animales estabulados y con fines deportivos. Sin embargo, al ser muy bajo el porcentaje de animales que son necropsiados y muestreados, la mayoría de los casos queda con un diagnóstico incierto, que impide establecer la causa de muerte. En el presente trabajo se presentan y analizan los hallazgos clínicos, histopatológicos y bacteriológicos de un equino que muere a las 48 h con un cuadro clínico de cólico. A la necropsia los hallazgos más importantes fueron ruptura del estómago, intestino delgado color rojo oscuro con la pared aumentada de espesor y el hígado color amarillento y aspecto de nuez moscada. De los cultivos anaeróbicos de hígado se aisló Clostridium perfringens tipo A. Si bien el rol de C. perfringens en infecciones intestinales en equinos es motivo de controversias, en este caso se aporta información sobre la posible relación entre la presencia de esta bacteria y casos de enteritis hemorrágicas severas o enterotoxemias en equinos. Se alerta sobre la posibilidad de que las enteritis hemorrágicas sean más frecuentes de lo esperado y por ende la necesidad de estudiarlas en mayor profundidad.
    Full-text · Article · Jun 2016