Meat inspection records of one large cattle slaughterhouse were analysed to evaluate the added value of slaughterhouse data for cattle health surveillance in the Netherlands. Data were available from January 2015 to September 2018, consisting of 467,361 meat inspection records. Analyses included 1) an assessment of the representativeness of the cattle herds in the slaughterhouse data in relation to the cattle herd population in the Netherlands, and 2) multivariable analyses to quantify associations between meat inspection findings and farm of origin characteristics, and the trends in time of the findings in slaughtered cattle. Ninety percent of the meat inspection records originated from dairy cattle therefore this paper only presents the results of dairy herds (N=422,194 cattle). The dairy herds in the slaughterhouse data seemed representative for the Dutch dairy population although their regional coverage differed from the distribution of dairy herds in the Netherlands. Non-dairy herds were underrepresented in the slaughterhouse data which stresses the importance of the inclusion of data from other slaughterhouses that may be more specialized in slaughtering beef cattle. Inspection records were categorized into 15 indicators related to ante-mortem and post-mortem findings. Following multivariable analyses, seven indicators were deemed of added value to existing cattle health surveillance components, as they provided either new information or information regarding specific health problems.

中文翻译：

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荷兰肉品检验数据对奶牛健康监测的附加价值

分析了一家大型牛屠宰场的肉类检验记录，以评估屠宰场数据对荷兰牛健康监测的附加值。数据可从 2015 年 1 月至 2018 年 9 月获得，包括 467,361 份肉类检验记录。分析包括 1) 评估屠宰场数据中牛群相对于荷兰牛群数量的代表性，以及 2) 多变量分析以量化肉类检验结果与原产地农场特征之间的关联，以及屠宰牛的发现时间。90% 的肉类检验记录来自奶牛，因此本文仅呈现奶牛群（N=422,194 头牛）的结果。屠宰场数据中的奶牛群似乎代表了荷兰奶牛种群，尽管它们的区域覆盖范围与荷兰奶牛群的分布不同。屠宰场数据中非奶牛群的代表性不足，这强调了纳入其他屠宰场数据的重要性，这些屠宰场可能更擅长屠宰肉牛。检验记录分为 15 个与验尸前和验尸结果相关的指标。经过多变量分析，七个指标被认为对现有的牛健康监测组成部分具有附加价值，因为它们提供了新信息或有关特定健康问题的信息。屠宰场数据中非奶牛群的代表性不足，这强调了纳入其他屠宰场数据的重要性，这些屠宰场可能更擅长屠宰肉牛。检验记录分为 15 个与验尸前和验尸结果相关的指标。经过多变量分析，七个指标被认为对现有的牛健康监测组成部分具有附加价值，因为它们提供了新信息或有关特定健康问题的信息。屠宰场数据中非奶牛群的代表性不足，这强调了纳入其他屠宰场数据的重要性，这些屠宰场可能更擅长屠宰肉牛。检验记录分为 15 个与验尸前和验尸结果相关的指标。经过多变量分析，七个指标被认为对现有的牛健康监测组成部分具有附加价值，因为它们提供了关于特定健康问题的新信息或信息。