title: The prevalence of Salmonella enteritidis and other Salmonella sp. among Canadian registered commercial chicken broiler flocks.
abstract: A nation-wide survey was conducted to estimate the prevalence of Salmonella enteritidis and other salmonellas among Canadian commercial broiler flocks. Environmental (litter and/or water) samples from 226 of 294 (76.9%) randomly selected flocks were contaminated with salmonellas. Litter samples were more often contaminated with salmonellas than water samples (47.4 v. 12.3%). Fifty different salmonella serovars were isolated. The most prevalent serovars were S. hadar, S. infantis, and S. schwarzengrund; they were isolated from samples of 98/294 (33.3%), 26/294 (8.8%), and 21/294 (7.1%) flocks, respectively. Feed samples of 39/290 (13.4%) flocks were contaminated with salmonellas. Salmonella enteritidis was isolated from the environmental samples of 9/294 (3.1%) flocks. Salmonella enteritidis phage type (PT) 8 was isolated from seven flocks, and PT 13a from two flocks.
authors.affiliation: Health of Animals Laboratory, Guelph, Ontario, Canada.
authors.forename: C
authors.initials: C
authors.lastname: Poppe
authors.forename: R J
authors.initials: RJ
authors.lastname: Irwin
authors.forename: S
authors.initials: S
authors.lastname: Messier
authors.forename: G G
authors.initials: GG
authors.lastname: Finley
authors.forename: J
authors.initials: J
authors.lastname: Oggel
mesh_terms: D000821:Animal Feed; D000818:Animals; D001434:Bacteriophage Typing; D002170:Canada / Q000453:epidemiology; D002645:Chickens; D004269:DNA, Bacterial / Q000032:analysis; D005516:Food Microbiology; D006799:Housing, Animal; D010957:Plasmids; D011201:Poultry Diseases / Q000453:epidemiology*; D015995:Prevalence; D012475:Salmonella / Q000145:classification / Q000235:genetics / Q000302:isolation & purification*; D012481:Salmonella Infections, Animal / Q000453:epidemiology*; D012477:Salmonella enteritidis / Q000145:classification / Q000235:genetics / Q000302:isolation & purification*; D012703:Serotyping
chemical_list: D004269:DNA, Bacterial