Salmonella control in commercial layer farms: voluntary self-control in Baden-Wurttemberg 1991-2006.

摘要

From 1991-2006, an average of 157 commercial layer farms per year participated in a voluntary Salmonella monitoring programme in the German State of Baden-Wuerttemherg. During this period, a total of 58 502 eggs and 13 724 pooled faecal samples were examined for Salmonella. Positive samples were subclassified according to the serovar isolated. Compared to the relatively high prevalence (25.3%) of farms with positive faecal samples in 1995 and 7.0% farms with positive eggs in 1994, there was a clear decrease in the prevalence of infection. During the investigation period, Salmonella enteritidis was the most frequently detected serovar and accounted in some years for more than 80% of Salmonella organisms isolated from faecal samples..