Factors associated with fecal shedding of verotoxin-producing Escherichia coli O157 on dairy farms.
Fecal samples were collected from 4,361 dairy cows on 91 dairy operations between 26 February and 8 July 1996.
Fecal samples were cultured for Escherichia coli 0157, and positive isolates were probed for verotoxin-producing genes.
A total of 52 (1.2%) fecal samples on 22 (24.2%) operations were positive for verotoxin-producing E. coli 0157.
Herds in which samples were collected on or after 1 May 1996 were significantly more likely to test positive than herds sampled before that date (odds ratio=7.7).
Herds maintained on farms on which alleyways were flushed with water to remove manure were 8.0 times more likely to have samples test positive for verotoxin-producing E. coli 0157 than were herds maintained on farms cleaned by use of other methods of manure removal.
Mots-clés Pascal : Elevage, Escherichia coli, Enterobacteriaceae, Bactérie, Vache, Boeuf, Artiodactyla, Ungulata, Mammalia, Vertebrata, Lait, Fèces, Abattage, Contamination, Animal ruminant, Bétail, Entérotoxine, Abats, Bovin, Facteur risque, Microorganisme, Installation agricole, Production laitière, Souche O157, EXPLOITATION LAITIERE
Mots-clés Pascal anglais : Rearing, Escherichia coli, Enterobacteriaceae, Bacteria, Cow, Ox, Artiodactyla, Ungulata, Mammalia, Vertebrata, Milk, Feces, Slaughter, Contamination, Ruminant animal, Livestock, Enterotoxin, Offals, Bovine, Risk factor, Microorganism, Agricultural facility, Milk production, DAIRY FARMS
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 99-0336536
Code Inist : 002A36C03. Création : 16/11/1999.