Fayer R, Fischer J R, Sewell C T, Kavanaugh D M, Osborn D A
United States Department of Agriculture, Agricultural Research Service, Beltsville, Maryland 20705, USA.
J Wildl Dis. 1996 Oct;32(4):619-22. doi: 10.7589/0090-3558-32.4.619.
In August 1994, cryptosporidiosis was diagnosed in a diarrheic fawn from a captive white-tailed deer (Odocoileus virginianus) herd maintained for research purposes at The University of Georgia's Warnell School of Forest Resources in Athens, Georgia (USA). From June through August 1995, 11 captive female white-tailed deer were housed in individual barn stalls where they gave birth to 18 fawns. Feces collected at 2 or 3 day intervals from the 18 neonatal fawns for at least 21 days and from 11 adult females once from 1 to 30 days before fawns were born and on three to 12 occasions after their birth were examined for oocysts of Cryptosporidium spp. Feces from all animals appeared normal throughout the period of examination. Oocysts morphologically indistinguishable from those of Cryptosporidium parvum were detected intermittently in the feces of one adult female from 1 to 25 days after parturition and in the feces of her fawn from 11 to 22 days of age. Oocysts also were detected intermittently in feces from twin fawns from 9 to 20 days of age, but not from their mother. Oocysts from deer were infectious for neonatal mice as determined histologically, and for calves as determined by clinical signs and excretion of oocysts.
1994年8月，在美国佐治亚州雅典市佐治亚大学沃内尔森林资源学院为研究目的饲养的一群圈养白尾鹿（弗吉尼亚鹿）中，一头腹泻的幼鹿被诊断出患有隐孢子虫病。1995年6月至8月，11只圈养的雌性白尾鹿被安置在单独的畜栏中，它们产下了18只幼鹿。从18只新生幼鹿中每隔2或3天收集一次粪便，至少收集21天；从11只成年雌性鹿中，在幼鹿出生前1至30天收集一次粪便，在幼鹿出生后收集3至12次粪便，检查其中隐孢子虫属的卵囊。在整个检查期间，所有动物的粪便看起来都正常。在一只成年雌性鹿产后1至25天的粪便中，以及在其幼鹿11至22日龄的粪便中，间歇性地检测到形态上与微小隐孢子虫卵囊无法区分的卵囊。在9至20日龄的一对孪生幼鹿的粪便中也间歇性地检测到卵囊，但在它们母亲的粪便中未检测到。经组织学鉴定，鹿的卵囊对新生小鼠具有感染性，经临床症状和卵囊排泄情况鉴定，对小牛也具有感染性。
