Recovery of antimicrobial-resistant Escherichia coli after storage of bovine feces in Cary-Blair medium.
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 degrees C. 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.
Alexander
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Agriculture and Agri-Food Canada Research Centre, 5403 1st Ave. S., P.O. Box 3000, Lethbridge, AB T1J 4B1, Canada.
Booker
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Gow
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Read
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McAllister
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D000668:Ampicillin Resistance; D000818:Animals; D001431:Bacteriological Techniques; D002417:Cattle; D015169:Colony Count, Microbial; D003470:Culture Media; D024881:Drug Resistance, Bacterial; D004926:Escherichia coli / Q000187:drug effects* / Q000302:isolation & purification*; D005243:Feces / Q000382:microbiology*; D008297:Male; D013753:Tetracycline Resistance; D013997:Time Factors
D003470:Culture Media