Pathological studies on systemic mycoses in calves.
Pathological studies on systemic mycoses in calves.
复制标题
犊牛全身性真菌病的病理学研究。
DOI：
10.1292/jvms.53.1051
复制
发表时间：
1991
期刊：
影响因子：
--
通讯作者：
Yukio Matsui
中科院分区：
文献类型：
--
作者：
Yutaka Chihaya;Yukio Furusawa;Hiroyuki Okada;Kiyoshi Matsukawa;Yukio Matsui
在过去10年中尸检的406头6月龄以下的牛犊中，有19头(4.7%)发现了系统性真菌病。19例患者中12例(63.2%)发生消化道真菌病。在消化性真菌病中，毛霉病的发生率最高(91.7%，11/12)，其次是曲霉菌病(41.7%)和念珠菌病(9.3%)。毛霉病和曲霉病的特征是前胃、皱胃和小肠的粘膜和肌肉层有局限性出血性坏死和菌丝增殖和血栓。念珠菌病的特征是胃黏膜角化过度，伴有假菌丝和微孢子。12头犊牛中有4头(33.3%)患有由毛霉菌和曲霉菌组成的混合消化道感染。19头犊牛中有10头(52.6%)出现肺曲霉菌病。肺内可见微小脓肿伴菌丝增殖或小行星小体。19头牛犊中有3头(10.5%)同时感染了消化道和呼吸器官。播散性霉菌病仅见于一条小腿。在消化性霉菌病中，使用抗生素治疗腹泻和早期断奶被认为是一个重要的诱因。
Systemic mycoses were found in 19 (4.7%) of 406 calves less than 6 months old which were autopsied during the past 10 years. Alimentary mycosis occurred in 12 (63.2%) of 19 cases. In alimentary mycosis, mucormycosis showed the highest rate of occurrence (91.7%, 11/12 calves) followed by aspergillosis 41.7% and candidiasis was 9.3%. Mucormycosis and aspergillosis were characterized by focal hemorrhagic necroses with hyphal proliferation and thrombi in the mucosa and muscular layers of the forestomach, abomasum, and small intestine. Candidiasis was characterized by hyperkeratosis with pseudohyphae and microconidia in the mucosa of the omasum. Four of 12 calves (33.3%) had mixed infections of the alimentary tract consisting of Mucorales and Aspergillus species. Pulmonary aspergillosis was found in 10 (52.6%) of 19 calves. There were micro-abscesses with hyphal proliferation or asteroid bodies in the lungs. Infections involving both the alimentary tract and respiratory organs were noted in 3 (10.5%) of 19 calves. Disseminated mycosis was found only in one calf. In alimentary mycosis, administration of antibiotics for the treatment of diarrhea and early weaning were thought to be an important predisposing factor.