Dean Katharine R, Grøntvedt Carl Andreas, Hopp Petter, Viljugrein Hildegunn, Wolff Cecilia
Norwegian Veterinary Institute, Elizabeth Stephansens vei 1, Ås, 1433, Norway.
BMC Vet Res. 2025 Apr 7;21(1):249. doi: 10.1186/s12917-025-04695-y.
Animal movements are an important pathway for the spread of pig diseases. Traceability systems provide data for the competent authorities to prevent and manage infectious disease outbreaks. In Norway, batch-level pig movements are documented in the Norwegian Livestock Register. The purpose of our study was to evaluate the quality of pig movement data in the Norwegian Livestock Register for 2022. We assessed the quality in terms of accuracy, completeness and timeliness for the purpose of outbreak preparedness. We used secondary governmental and industry registers for external validation.
The Norwegian Livestock Register contained all the variables needed for tracing pig movements between farms and to slaughterhouses. The register had high accuracy for individual records of between farm movements, however, it lacked completeness. By comparing movements between farms to the Register for Carcass Deliveries, we found that 41% of sending farms lacked registrations in the Norwegian Livestock Register. Similarly, a quarter of all finisher farms did not report receiving any pigs for 2022. Using indicator farms, we show that three slaughterhouses did not correctly report live animal movements between farms on behalf of owners. Lastly, we found that 41% of records were registered after the deadline of seven days.
The competent authorities need accurate, complete, and timely data on livestock movements to control rapidly spreading diseases. Based on our assessment, we found that pig movement data in the Norwegian Livestock Register lacked sufficient quality to serve this purpose. Instead, we recommend that movement data are additionally obtained through traditional epidemiological methods during outbreaks, such as from primary records on farms. Reporting from slaughterhouses and farms in sow pools should be targeted for improving the completeness and timeliness of the register data. Finally, the measures presented here should be used to develop real-time monitoring of the data quality.
动物移动是猪病传播的重要途径。可追溯系统为相关主管部门预防和管理传染病爆发提供数据。在挪威，批次级别的猪只移动记录在挪威牲畜登记簿中。我们研究的目的是评估2022年挪威牲畜登记簿中猪只移动数据的质量。为了疫情防范，我们从准确性、完整性和及时性方面评估了数据质量。我们使用政府和行业的二级登记簿进行外部验证。
挪威牲畜登记簿包含追踪农场间以及农场到屠宰场猪只移动所需的所有变量。该登记簿对于农场间移动的个体记录准确性较高，然而，它缺乏完整性。通过将农场间的移动与胴体交付登记簿进行比较，我们发现41%的发货农场在挪威牲畜登记簿中没有记录。同样，所有育肥场中有四分之一没有报告在2022年接收任何猪只。使用指标农场，我们发现三家屠宰场没有代表所有者正确报告农场间的活畜移动情况。最后，我们发现41%的记录在七天期限之后才登记。
相关主管部门需要准确、完整和及时的牲畜移动数据来控制快速传播的疾病。基于我们的评估，我们发现挪威牲畜登记簿中的猪只移动数据质量不足以满足这一目的。相反，我们建议在疫情爆发期间通过传统流行病学方法额外获取移动数据，例如从农场的原始记录中获取。应针对性地要求屠宰场和母猪养殖场进行报告，以提高登记簿数据的完整性和及时性。最后，此处提出的措施应被用于开发对数据质量的实时监测。
