Stoute S T, Charlton B R, Bickford A A, Bland M C
California Animal Health and Food Safety Laboratory System-Turlock Branch, University of California, Davis, 1550 North Soderquist Road, Turlock, CA 95381, USA.
Avian Dis. 2009 Mar;53(1):139-42. doi: 10.1637/8389-070108-Case.1.
Breeder squab candidates between the ages of 6 and 16 wk were submitted to the California Animal Health and Food Safety Laboratory, Turlock branch, as a result of respiratory distress and increased mortality. These cases were submitted from one Northern California commercial squab operation on three separate occasions occurring between December 2007 and March 2008. Severe trichomoniasis was identified, primarily in the tracheal epithelium and lung of squabs, with few or no lesions in the oral cavity, crop, esophagus, and livers, where the organism commonly infiltrates. Infiltration of the trachea and lung sections with trichomonads was associated with a severe inflammatory response in the surrounding tissue. Diagnosis was confirmed with the use of histopathology and an immunoperoxidase special stain. Oxytetracycline supportive antibiotic therapy to prevent secondary bacterial infections was administered to remaining squabs on the farm, but no specific treatment regimen was instituted. This novel respiratory presentation of trichomoniasis continued over a period of 3 mo, until mortality gradually returned to normal.
6至16周龄的种鸽候选鸽因呼吸窘迫和死亡率增加被送至加利福尼亚动物卫生与食品安全实验室特洛克分部。这些病例于2007年12月至2008年3月期间分三次从北加利福尼亚的一家商业鸽场送来。确诊为严重的毛滴虫病，主要见于鸽的气管上皮和肺，而在该病原体通常浸润的口腔、嗉囊、食管和肝脏中很少或没有病变。气管和肺切片中有毛滴虫浸润，并伴有周围组织的严重炎症反应。通过组织病理学检查和免疫过氧化物酶特殊染色得以确诊。农场对剩余的鸽使用土霉素进行支持性抗生素治疗以预防继发细菌感染，但未制定具体的治疗方案。这种毛滴虫病的新型呼吸道表现持续了3个月，直到死亡率逐渐恢复正常。
