Abstract
Tissues samples collected at necropsy from a 9 year-old Holstein cow were fixed in buffered 10% formalin for histological examination. Macroscopic finding did not reveal typical nodular cutaneous lesions. Vulvar microscopic sections of cutaneous tegument showed mites (Demodex bovis), alone and grouped in hair follicles and sebaceous glands.
Highlights
Tissues samples collected at necropsy from a 9 year-old Holstein cow were fixed in buffered 10% formalin for histological examination
A demodicose bovina em geral é subclínica e, apenas algumas vezes, os achados surgem em biopsias ou no post-mortem que procuram outras dermatopatias (Abu-Samra et al, 1984)
Dessa forma, quando houver suspeita clínica, a microscopia direta do conteúdo nodular é indicada para o imediato diagnóstico dessa parasitose (Fisher, 1973; Abu-Samra et al, 1984; Kennedy, 2001)
Summary
Tissues samples collected at necropsy from a 9 year-old Holstein cow were fixed in buffered 10% formalin for histological examination. A demodicose bovina é causada pelo Demodex bovis, ácaros moles, pequenos e em forma de charuto, habitantes dos folículos pilosos e das glândulas sebáceas (Jones et al, 1996).
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