Donat Karsten, Einax Esra, Klassen Anne
Thüringer Tierseuchenkasse, Anstalt des öffentlichen Rechts, 07745 Jena, Germany.
Klinikum Veterinärmedizin, Klinik für Geburtshilfe, Gynäkologie und Andrologie der Groß- und Kleintiere mit Tierärztlicher Ambulanz, Justus-Liebig-Universität Gießen, 35390 Giessen, Germany.
Animals (Basel). 2022 Feb 17;12(4):493. doi: 10.3390/ani12040493.
The Thuringian Johne's Disease (JD) Control Program provides a voluntary approach to JD control in Thuringia, a federal state of Germany. The program has three objectives: reduce the level of infection when present; reduce the spread of JD to uninfected herds; and facilitate the certification and protection of herds that are non-suspect with respect to JD. The program offers pathways for the management of affected herds and for certification of herds with continuing negative tests. After the control stage (CS), a certification stage of at least 3 consecutive years with continuing negative results in the annual whole-herd test has to be passed until a herd can be certified as 'non-suspect' with respect to JD. This study focused on calf mortality in relation to JD herd status. In a longitudinal study, the association of annual calf mortality rate of a total of 93 dairy herds (13 'non-suspect'; 26 in control stage; 54 not enrolled) over 10 consecutive years with JD herd status was investigated using a generalized mixed linear model with repeated measures. Non-suspect herds had a lower calf mortality rate compared with other farms. We conclude that establishing JD control measures lowers the calf mortality rate.
图林根州牛副结核病（JD）控制计划为德国联邦州图林根州的JD控制提供了一种自愿方法。该计划有三个目标：在存在感染时降低感染水平；减少JD向未感染畜群的传播；促进对JD无嫌疑畜群的认证和保护。该计划为受影响畜群的管理以及持续检测呈阴性的畜群的认证提供了途径。在控制阶段（CS）之后，必须经过至少连续3年的认证阶段，且每年全群检测结果持续为阴性，畜群才能被认证为JD“无嫌疑”。本研究聚焦于与JD畜群状况相关的犊牛死亡率。在一项纵向研究中，使用具有重复测量的广义混合线性模型，调查了连续10年共93个奶牛场（13个“无嫌疑”；26个处于控制阶段；54个未登记）的年度犊牛死亡率与JD畜群状况之间的关联。与其他农场相比，无嫌疑畜群的犊牛死亡率较低。我们得出结论，建立JD控制措施可降低犊牛死亡率。
