Centre for Epidemiology and Risk Analysis, Veterinary Laboratories Agency-Weybridge, Woodham Lane, New Haw, Addlestone, Surrey KT15 3NB.
Vet Rec. 2011 Mar 5;168(9):240. doi: 10.1136/vr.c6823. Epub 2011 Feb 21.
Abattoir data collected from three British pig health monitoring schemes were combined to investigate the associations between Salmonella infection and the presence of gross lesions detected in slaughtered pigs. Each set of results was linked back to the farm from which the pigs were submitted, and the Salmonella results and lesions reports were connected at farm level. Salmonella infection was determined through meat juice ELISA (MJE), and the health conditions were assessed by postmortem inspection. The final dataset contained 873 slapmarks, with an average of 215 samples tested by MJE, and 355 pigs that were assessed for health conditions, per slapmark. Each of the health assessment conditions was individually analysed by regression models to investigate associations with the MJE results, accounting for clustering at the slapmark level and also for seasonality. A multivariable model was also used to estimate the strength of association with MJE results when all the health conditions were entered into the model. The results showed positive associations between Salmonella and enzootic pneumonia-like lesions, milk spots, peritonitis and pericarditis.
将三个英国猪健康监测计划的屠宰场数据进行合并，以调查屠宰猪中沙门氏菌感染与肉眼可见病变之间的关系。每一组结果都与提交猪的农场相关联，并且沙门氏菌结果和病变报告在农场层面上进行了连接。沙门氏菌感染通过肉汁 ELISA（MJE）进行确定，健康状况通过尸检评估。最终数据集包含 873 个拍打标记，每个拍打标记平均有 215 个 MJE 测试样本，每个拍打标记有 355 头猪进行健康状况评估。每个健康评估条件都通过回归模型进行单独分析，以调查与 MJE 结果的关联，同时考虑到拍打标记水平的聚类和季节性。当所有健康状况都纳入模型时，还使用多变量模型来估计与 MJE 结果的关联强度。结果表明，沙门氏菌与地方性肺炎样病变、奶斑、腹膜炎和心包炎之间存在正相关关系。
