Prevalence and risk factors for Salmonella in veal calves at Danish cattle abattoirs.
The study's objectives were to determine herd- and animal-level prevalence and herd-level risk factors for Salmonella in dairy-bred veal calves at slaughter in Denmark. In total, 1296 faecal samples were collected at five cattle abattoirs in Denmark during 2007-2008. The animals came from 71 randomly selected specialized veal-calf producers that delivered more than 100 animals to slaughter per year. Salmonella Dublin bacteria were isolated from 19 samples from 12 herds and Salmonella Typhimurium was isolated from one sample. The apparent prevalence of herds delivering Salmonella-shedding animals to slaughter was 18% (95% CI 9-27). The overall estimated true prevalence of shedding calves at slaughter was 1.3%. Veal-calf herds that purchased animals from herds not classified as low risk in the Danish Salmonella surveillance programme had significantly (P=0.03) higher risk of delivering Salmonella-shedding calves to slaughter. The results emphasize the importance of efforts in the dairy industry to ensure food safety for consumers.
Department of Large Animal Sciences, Faculty of Life Sciences, University of Copenhagen, Denmark.
L R
LR
Nielsen
Division of Microbiology and Risk Assessment, The National Food Institute, Technical University of Denmark.
D L
DL
Baggesen
Division of Microbiology and Risk Assessment, The National Food Institute, Technical University of Denmark.
S
S
Aabo
The Danish Veterinary and Food Administration, Region North, Aalborg, Denmark.
M K
MK
Moos
Danish Cattle Federation, Knowledge Centre for Agriculture, Aarhus, Denmark.
E
E
Rattenborg
D000003:Abattoirs / Q000706:statistics & numerical data; D000818:Animals; D002417:Cattle; D002418:Cattle Diseases / Q000453:epidemiology* / Q000209:etiology / Q000382:microbiology; D003718:Denmark / Q000453:epidemiology; D008297:Male; D015995:Prevalence; D012307:Risk Factors; D012475:Salmonella / Q000302:isolation & purification; D012481:Salmonella Infections, Animal / Q000453:epidemiology* / Q000209:etiology / Q000382:microbiology; D012486:Salmonella typhimurium / Q000302:isolation & purification