Diagnostic interaction between bovine tuberculosis (bTB) and Johne`sdisease in bTB highly prevalent dairy farms of Uruguay
Veterinary and Animal Science publish this investigation article
June 1st, 2019
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 (P < 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
Picasso-Risso C., Gil A., Nunez A., Suanes A., Macchi V., Salaberry X., Alvarez J. and Perez AM.
 | Department of Veterinary Population Medicine. College of Veterinary Medicine. University of Minnesota (UMM). |
 | Facultad de Veterinaria. Universidad de la República de Uruguay. |
 | División Laboratorios Veterinarios Miguel C. Rubino. Ministerio de Ganadería, Agricultura y Pesca. |
 | Centro de Vigilancia Sanitaria Veterinaria (VISAVET). Universidad Complutense (UCM). |
| Departamento de Sanidad Animal. Facultad de Veterinaria. Universidad Complutense (UCM). |
