Age-Related Decline in Carriage of Ampicillin-Resistant Escherichia coli in Young Calves.
- Resource Type
- Article
- Authors
- Hoyle, Deborah V.; Shaw, Darren J.; Knight, Hazel I.; Davison, Helen C.; Pearce, Michael C.; Low, J. Chris; Gunn, George J.; Woolhouse, Mark E. J.
- Source
- Applied & Environmental Microbiology. Nov2004, Vol. 70 Issue 11, p6927-6930. 4p. 1 Chart, 2 Graphs.
- Subject
- *ESCHERICHIA coli
*CALVES
*FECES
*COLONIZATION (Ecology)
*ECOLOGY
*MICROBIOLOGY
- Language
- ISSN
- 0099-2240
The presence of ampicillin-resistant Escherichia coli (Ampr E. coli) in the fecal flora of calves was monitored on a monthly basis in seven cohorts of calves. Calves were rapidly colonized by Ampr E. coli, with peak prevalence in cohort calves observed in the 4 months after the calves were born. The prevalence of calves yielding Ampr E. coli in cohorts consistently declined to low levels with increasing age of the calves (P < 0.001). [ABSTRACT FROM AUTHOR]