Anderson B C
Vet Pathol. 1987 May;24(3):235-8. doi: 10.1177/030098588702400307.
A 6-week-old calf and nine feedlot steers shed oocysts similar to Cryptosporidium muris-like oocysts. There were massive populations of this Cryptosporidium in the peptic glands of most of these animals. The oocysts were larger and more oval than the frequently reported type which is generated in the intestines of many animal species and thought to be similar to Cryptosporidium parvum. The pattern of shedding of this newly discovered Cryptosporidium in the steers was continuous over a period of months whereas the C. parvum-like oocysts cease to be shed 1 to several weeks after onset. The nature of the host-parasite interaction in abomasal cryptosporidiosis is yet to be determined. Morphologic changes that resulted from the interaction were an approximate 10% increase in abomasal mucosal thickness, widening of gland lumens in the middle region, and atrophy of epithelium in the same region.
一头6周龄的小牛和九头育肥牛排出了类似于鼠隐孢子虫样卵囊的卵囊。在这些动物中的大多数的胃腺中存在大量这种隐孢子虫。这些卵囊比许多动物物种肠道中产生的、被认为类似于微小隐孢子虫的常见类型更大且更呈椭圆形。这种新发现的隐孢子虫在育肥牛中的排出模式在数月内持续存在，而微小隐孢子虫样卵囊在发病后1至数周就停止排出。胃隐孢子虫病中宿主 - 寄生虫相互作用的性质尚待确定。相互作用导致的形态学变化包括胃黏膜厚度增加约10%、中间区域腺腔增宽以及同一区域上皮萎缩。
