The effect of source herd and abattoir factors on pig carcass Salmonella contamination evaluated by multilevel modelling
Publikation: Konferencebidrag › Paper › Forskning
Standard
The effect of source herd and abattoir factors on pig carcass Salmonella contamination evaluated by multilevel modelling. / Baptista, Filipa Matos; Dahl, Jan; Nielsen, Liza Rosenbaum.
2010.Publikation: Konferencebidrag › Paper › Forskning
Harvard
APA
Vancouver
Author
Bibtex
}
RIS
TY - CONF
T1 - The effect of source herd and abattoir factors on pig carcass Salmonella contamination evaluated by multilevel modelling
AU - Baptista, Filipa Matos
AU - Dahl, Jan
AU - Nielsen, Liza Rosenbaum
PY - 2010
Y1 - 2010
N2 - In Denmark, a Surveillance-and-Control Programme for Salmonella in pigs has been in place for several years. This study investigated factors associated with Salmonella pig carcass contamination, namely estimated daily number of Salmonella seropositive pigs delivered to slaughter, average Salmonella seroprevalence of the source herds that delivered each of five pigs contributing to the pool, weekday, year, season and abattoir size. A total of 20128 pooled carcass swabs collected in 22 Danish abattoirs, from 2002 to 2008, were included in a multilevel logistic regression model. Study results indicate that the probability of Salmonella positive carcasses is mainly influenced by the Salmonella herd seroprevalence of the swabbed pigs, the number of seropositive pigs delivered to the abattoir on the same day and weekday. Further reduction in carcass pool Salmonella prevalence may require new or improved methods, such as abattoir hygiene, logistic slaughter and decontamination, adjusting for the Danish herd and abattoir structure.
AB - In Denmark, a Surveillance-and-Control Programme for Salmonella in pigs has been in place for several years. This study investigated factors associated with Salmonella pig carcass contamination, namely estimated daily number of Salmonella seropositive pigs delivered to slaughter, average Salmonella seroprevalence of the source herds that delivered each of five pigs contributing to the pool, weekday, year, season and abattoir size. A total of 20128 pooled carcass swabs collected in 22 Danish abattoirs, from 2002 to 2008, were included in a multilevel logistic regression model. Study results indicate that the probability of Salmonella positive carcasses is mainly influenced by the Salmonella herd seroprevalence of the swabbed pigs, the number of seropositive pigs delivered to the abattoir on the same day and weekday. Further reduction in carcass pool Salmonella prevalence may require new or improved methods, such as abattoir hygiene, logistic slaughter and decontamination, adjusting for the Danish herd and abattoir structure.
KW - Former LIFE faculty
KW - Veterinær epidemiologi
KW - Salmonella
KW - pigs
M3 - Paper
ER -
ID: 37742477