Picasso-Risso C, Gil A, Nunez A, Suanes A, Macchi V, Salaberry X, Alvarez J, Perez A
Department of Veterinary Population Medicine, University of Minnesota, Saint Paul, MN, United States.
Facultad de Veterinaria, Universidad de la Republica, Montevideo, Uruguay.
Vet Anim Sci. 2019 Feb 21;7:100052. doi: 10.1016/j.vas.2019.100052. eCollection 2019 Jun.
The consolidation of the dairy industry, with increase in sizes, density and productivity of the herds, was associated to unprecedented bovine tuberculosis (bTB) prevalence levels in dairy herds in Uruguay, where Johne's disease (JD), another mycobacterial disease, is also prevalent. Here, we aimed to characterize the association between bTB- and JD-diagnostic results in two heavily bTB- and JD-coinfected dairy herds. Results from bTB-intradermal tests and JD-ELISA in 686 cows indicated a significantly ( < 0.001) higher frequency of bTB-positive animals in the JD-positive population, in which a significantly lower agreement between the caudal and cervical comparative intradermal tests was observed, compared to the JD-negative population. These findings suggest a significant association between the detection of these mycobacterial diseases, that may affect the performance of the routine bTB diagnostic tests performed in dairy herds in Uruguay.
随着奶牛养殖规模扩大、密度增加以及牛群生产力提高，乌拉圭奶牛养殖业的整合与奶牛群中前所未有的牛结核病（bTB）流行水平相关，在该国，另一种分枝杆菌病——副结核（JD）也很普遍。在此，我们旨在描述两个重度bTB和JD合并感染的奶牛群中bTB和JD诊断结果之间的关联。对686头奶牛进行bTB皮内试验和JD酶联免疫吸附测定（ELISA）的结果表明，与JD阴性群体相比，JD阳性群体中bTB阳性动物的频率显著更高（<0.001），且在该群体中，尾侧和颈部比较皮内试验之间的一致性显著更低。这些发现表明，这些分枝杆菌病的检测之间存在显著关联，这可能会影响乌拉圭奶牛群中常规bTB诊断检测的性能。
