title: Investigation of bacterial resistance to hatchery disinfectants.
abstract: Three commercial chicken hatcheries were sampled for environmental bacteria. Isolated bacteria were tested for resistance to commercial preparations of quaternary ammonia, phenolic, and glutaraldehyde liquid disinfectants. Bacterial isolates were exposed to several disinfectant dilutions bracketing the dilutions recommended by the manufacturer for 5-, 10-, and 15-min exposure periods before subculturing to broth medium. Approximately 8% of the isolates from two of three hatcheries were resistant to disinfectant concentrations at and above the manufacturers recommended dilution and time of exposure. Resistant bacteria included Serratia marcescens, Bacillus cereus, Bacillus thuringiensis, Bacillus badius, Enterococcus faecalis, Enterococcus faecium, Pseudomonas stutzeri, and Enterobacter agglomerans.
authors.affiliation: Department of Poultry Science, College of Agriculture and Environmental Sciences, University of Georgia, Athens 30602-4875, USA.
authors.forename: E M
authors.initials: EM
authors.lastname: Willinghan
authors.forename: J E
authors.initials: JE
authors.lastname: Sander
authors.forename: S G
authors.initials: SG
authors.lastname: Thayer
authors.forename: J L
authors.initials: JL
authors.lastname: Wilson
mesh_terms: D000818:Animals; D002645:Chickens; D004202:Disinfectants; D004352:Drug Resistance, Microbial; D006090:Gram-Negative Bacteria / Q000187:drug effects; D006094:Gram-Positive Bacteria / Q000187:drug effects; D006799:Housing, Animal
chemical_list: D004202:Disinfectants