Streeter R N, Hoffsis G F, Bech-Nielsen S, Shulaw W P, Rings D M
Department of Veterinary Clinical Sciences, Ohio State University, Columbus 43210, USA.
Am J Vet Res. 1995 Oct;56(10):1322-4.
Mycobacterial culture was performed on colostrum, milk, and feces from 126 clinically normal cows of a single herd with high prevalence of Mycobacterium paratuberculosis infection. Thirty-six (28.6%) cows were determined to be shedding the organism in the feces. Of the 36 fecal Culture positive cows, M paratuberculosis was isolated from the colostrum of 8 (22.2%) and from the milk of 3 (8.3%). Cows that were heavy fecal shedders were more likely to shed the organism in the colostrum than were light fecal shedders.
对来自单个牛群中126头临床正常奶牛的初乳、牛奶和粪便进行了分枝杆菌培养，该牛群副结核分枝杆菌感染率很高。36头（28.6%）奶牛被确定粪便中排出该病原体。在36头粪便培养呈阳性的奶牛中，8头（22.2%）的初乳中分离出副结核分枝杆菌，3头（8.3%）的牛奶中分离出副结核分枝杆菌。粪便排出量大的奶牛比粪便排出量小的奶牛更有可能在初乳中排出该病原体。
