安大略省部分奶牛场中牛棒状杆菌的观察性研究。
An observational study of Corynebacterium bovis in selected Ontario dairy herds.
作者信息
Brooks B W, Barnum D A, Meek A H
出版信息
Can J Comp Med. 1983 Jan;47(1):73-8.
Abstract
An observational study of Corynebacterium bovis was conducted in 74 Ontario dairy herds. The levels of infection with C. bovis were 19.9, 36.2 and 85.6% at the quarter, cow and herd level, respectively. Teat disinfection was found to be the variable best able to distinguish between herds with a high or low C. bovis quarter infection rate. Mean total milk somatic cell counts for 1103 quarters and 107 cows infected with only C. bovis ranged between 150,000 and 200,000/mL and were significantly higher than for uninfected quarters or cows. The rate of infection with mastitis pathogens was not significantly different in quarters previously colonized with only C. bovis compared to previously uninfected quarters.
摘要
在安大略省的74个奶牛场进行了一项关于牛棒状杆菌的观察性研究。牛棒状杆菌在乳区、奶牛和牛群水平的感染率分别为19.9%、36.2%和85.6%。发现乳头消毒是最能区分牛棒状杆菌乳区感染率高或低的牛群的变量。1103个仅感染牛棒状杆菌的乳区和107头奶牛的平均总乳体细胞计数在150,000至200,000/mL之间，显著高于未感染的乳区或奶牛。与先前未感染的乳区相比，仅先前被牛棒状杆菌定殖的乳区中乳腺炎病原体的感染率没有显著差异。
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