Doenças fúngicas e pitiose em ruminantes.

Abstract

Infections caused by fungi and oomycetes have been described as important causes of morbidity and mortality in ruminants. This work is divided into four chapters. The first chapter is a literature review about fungal diseases in ruminants, as conidiobolomycosis, cryptococcosis, aspergillosis, mastitis and mycotic placentitis, and rhinosporidiosis. The second chapter is a literature review about various forms of pythiosis in ruminants, including cutaneous pythiosis in cattle, sheep and goats, rhinofacial pythiosis in sheep, and digestive pythiosis in sheep. The third chapter reports a case of nasal and cutaneous aspergillosis in a goat that had severe respiratory distress and a focus of depigmentation in the ventral commissure of the nostril. Morphologically, it was characterized by erosive pyogranulomatous rhinitis and dermatitis with intralesional fungal hyphae. Aspergillus niger was isolated by mycological culture. The fourth chapter reports a case of cutaneous pythiosis in a goat that had daily acces to a pond and developed an ulcerative lesion on its left hind limb. The lesions were characterized by piogranulomatous ulcerative dermatitis with intralesional fungal hyphae stained positively by immuno-histochemistry.