Abstract：
Avian gastric yeast (Macrorhabdus ornithogaster) is a microorganism that infects aviary birds worldwide, both captive and wild. A total number of 352 birds, belonging to 18 avian species, were examined from 2019 to 2022 for M. ornithogaster, using fecal smears of live birds or cytological samples of the proventriculus taken at necropsy. These cytological samples were taken from birds that died from different causes. Some of the birds exhibited symptoms such as lethargy, regurgitation, weight loss and anorexia. Faecal samples were collected from all the birds and analysed for gastric yeast using a direct smear and Gram-staining method. The microorganism was diagnosed most frequently in budgerigars (55.5%), the African gray parrot (33.3%), and nymphs (34.3%). The prevalence of M. ornithogaster in canaries was 10%. The infection was detected in 31% of the examined birds, which shows that the occurrence of M. ornithogaster in exotic birds is common. No clinical signs were observed in the vast majority of birds that tested positive for gastric yeast.
摘要：
禽胃酵母（Macrorhabdusornithogaster）是一种感染世界范围内禽鸟的微生物，圈养和狂野。总共有352只鸟，属于18种鸟类，从2019年到2022年检查了鸟粪分枝杆菌，使用活禽的粪便涂片或尸检时采集的前室细胞学样本。这些细胞学样本取自因不同原因死亡的鸟类。一些鸟类表现出嗜睡等症状，返流,体重减轻和厌食症。从所有禽类中收集粪便样品，并使用直接涂片和革兰氏染色方法分析胃酵母。该微生物在鹦鹉中最常见(55.5%)，非洲灰鹦鹉（33.3%）若虫(34.3%)。金丝雀中鸟粪的患病率为10％。31%的受检禽鸟发现感染,这表明鸟嘴虫在外来鸟类中的发生很普遍。在绝大多数胃酵母检测呈阳性的鸟类中未观察到临床症状。
