Goodwin M A, Latimer K S, Brown J, Steffens W L, Martin P W, Resurreccion R S, Smeltzer M A, Dickson T G
Georgia Poultry Laboratory, Oakwood 30566.
Poult Sci. 1988 Dec;67(12):1684-93. doi: 10.3382/ps.0671684.
In order to better characterize spontaneous respiratory cryptosporidiosis in chickens, a retrospective examination of histopathology reports from the Georgia Poultry Laboratories for an 18-mo period (4/1/86 to 9/30/87) was made; 12 cases were found. Collected data were analyzed and certain epidemiologic and histologic features were identified. Eleven of the 12 cases involved broiler type chickens. The ages of chickens with respiratory cryptosporidiosis were evenly distributed between 17 and 52 days of age. The infected birds were always clinically ill. Viruses or bacteria or both often accompanied respiratory Cryptosporidium sp. infections. Histologic lesions (including those of ciliary-adherent bacteria) are described. As the inflammatory response in infected organs became progressively nonpurulent (lymphocytes and plasma cells predominate), numbers of Cryptosporidium diminished. Cytologic preparations were useful for making diagnoses of respiratory cryptosporidiosis in chickens. Identification of epidemiologic features of respiratory cryptosporidiosis, and improved ability to make accurate and prompt diagnoses of Cryptosporidium sp. infection, are vital for a more complete understanding of the impact of this disease on poultry health.
为了更好地描述鸡的自发性呼吸道隐孢子虫病，我们对佐治亚州家禽实验室18个月期间（1986年4月1日至1987年9月30日）的组织病理学报告进行了回顾性检查；共发现12例病例。对收集到的数据进行了分析，并确定了某些流行病学和组织学特征。12例病例中有11例涉及肉鸡类型的鸡。患有呼吸道隐孢子虫病的鸡的年龄均匀分布在17至52日龄之间。受感染的鸡总是出现临床病症。病毒或细菌或两者常常伴随呼吸道隐孢子虫属感染。描述了组织学病变（包括纤毛附着细菌的病变）。随着受感染器官中的炎症反应逐渐变为非化脓性（以淋巴细胞和浆细胞为主），隐孢子虫数量减少。细胞学制剂有助于诊断鸡的呼吸道隐孢子虫病。确定呼吸道隐孢子虫病的流行病学特征以及提高对隐孢子虫属感染进行准确快速诊断的能力，对于更全面地了解这种疾病对家禽健康的影响至关重要。
