Recovery of antimicrobial-resistant Escherichia coli after storage of bovine feces in Cary-Blair medium.

Alexander, T.W., Booker, C.W., Gow, S.P., Read, R.R., and McAllister, T.A. (2009). "Recovery of antimicrobial-resistant Escherichia coli after storage of bovine feces in Cary-Blair medium.", Canadian Journal of Microbiology, 55(10), pp. 1224-1227. doi : 10.1139/W09-080  Access to full text

Abstract

The effect of storing bovine feces in Cary-Blair medium on the recovery of antimicrobial-resistant Escherichia coli was investigated. Feces from cattle at a research feedlot (n = 50) and at a commercial feedlot (n = 46) were processed immediately or after storage in Cary-Blair medium for 8 days at 5 8C. Total, ampicillin-resistant, and tetracycline-resistant E. coli were isolated. The number of total E. coli decreased slightly after storage (0.19 log units; p < 0.001), but storage of feces in Cary-Blair medium did not affect recovery of ampicillin- or tetracycline-resistant E. coli.