Mannheimia haemolytica–associated fibrinonecrotizing abomasitis in lambs
Estela Pérez,
Francisco A. Uzal,
Ricardo de Miguel
et al.
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 wer… Show more
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