Barton J T, Daft B M, Read D H, Kinde H, Bickford A A
California Veterinary Diagnostic Laboratory System, San Bernardino Branch, School of Veterinary Medicine, University of California-Davis 92412.
Avian Dis. 1992 Oct-Dec;36(4):1081-5.
A case of localized tracheal aspergillosis in 6 1/2-week-old single-comb white leghorn pullets caused by Aspergillus flavus is documented. Yellow caseous plaques adherent to the mucosal surface of the tracheas were observed grossly. In several tracheas, the plaques occluded the lumina, and the surrounding tracheal walls were reddened. Histologically, the mucosa was necrotic and infiltrated with macrophages, and fibroplasia was evident in the subadjacent tracheal wall. The lumen of the trachea was almost completely occluded by a combination of fungal mycelia and pyogranulomatous exudate. Portions of tracheal cartilage were elevated into the lumen of the trachea. Other than a sudden increase in mortality to 0.5% per day, there was no evidence of disease in the flock. Depletion of bursal lymphocytes, with concomitant cryptosporidiosis, was evident on histological examination. Acute infectious bursal disease was diagnosed in the succeeding flock at this ranch based upon serology and typical histology.
记录了一例由黄曲霉引起的6.5周龄单冠白来航母鸡局部气管曲霉病。肉眼观察到气管黏膜表面有黄色干酪样斑块附着。在几个气管中，斑块阻塞了管腔，周围气管壁发红。组织学上，黏膜坏死，有巨噬细胞浸润，相邻气管壁下可见明显的纤维组织增生。气管腔几乎完全被真菌菌丝和脓性肉芽肿性渗出物堵塞。部分气管软骨突入气管腔内。除了死亡率突然增加到每天0.5%外，鸡群没有其他疾病迹象。组织学检查显示法氏囊淋巴细胞减少，并伴有隐孢子虫病。根据血清学和典型组织学，该牧场后续鸡群被诊断为急性传染性法氏囊病。
