Mannheimia haemolytica-associated fibrinonecrotizing abomasitis in lambs.
Vet Pathol
; 61(4): 604-608, 2024 Jul.
Article
en En
| MEDLINE
| ID: mdl-38440930
ABSTRACT
Mannheimia haemolytica-associated abomasitis has been clinically described as a cause of sudden death in lambs, but it is poorly characterized. We describe the pathological features of a severe fibrinonecrotizing abomasitis in 3 lambs that died suddenly. All 3 abomasums had a thickened submucosa due to edema and necrotic areas delimited by bands of degenerate neutrophils with slender nuclei (oat cells) and angiocentric distributions. The overlying mucosa was congested. Myriads of gram-negative coccobacilli were observed within the oat cell bands. M. haemolytica was isolated from the abomasum in all 3 animals and was serotyped as A2 in one of them. Pericarditis and pleuritis were observed in 2 of the lambs. Clostridium spp. were isolated in 1 lamb and detected by immunohistochemistry in the 3 animals, suggesting clostridial co-infection. M. haemolytica should be considered among the differential diagnoses of necrotizing abomasitis in lambs.
Palabras clave
Texto completo:
1
Banco de datos:
MEDLINE
Asunto principal:
Enfermedades de las Ovejas
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Abomaso
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Infecciones por Pasteurellaceae
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Mannheimia haemolytica
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Necrosis
Límite:
Animals
Idioma:
En
Revista:
Vet Pathol
Año:
2024
Tipo del documento:
Article
País de afiliación:
España