Age-related decline in carriage of ampicillin-resistant Escherichia coli in young calves
Age-related decline in carriage of ampicillin-resistant Escherichia coli in young calves
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DOI：
10.1128/aem.70.11.6927-6930.2004
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发表时间：
2004-11-01
影响因子：
4.4
通讯作者：
Woolhouse, MEJ
中科院分区：
文献类型：
--
作者：
Hoyle, DV;Shaw, DJ;Woolhouse, MEJ
在七组牛犊中，每月监测粪便菌群中是否存在耐氨苯西林的大肠杆菌(Amp(R)E.coli)。小牛被Amp(R)大肠杆菌迅速定植，在出生后4个月的群体中观察到发病率最高。随着犊牛年龄的增加，群体中产Amp(R)大肠埃希氏菌的比例持续下降至较低水平(P
The presence of ampicillin-resistant Escherichia coli (Amp(r) E. coli) in the fecal flora of calves was monitored on a monthly basis in seven cohorts of calves. Calves were rapidly colonized by Amp(r) E. coli, with peak prevalence in cohort calves observed in the 4 months after the calves were born. The prevalence of calves yielding Amp(r) E. coli in cohorts consistently declined to low levels with increasing age of the calves (P