Diagnostic interaction between bovine tuberculosis (bTB) and Johne's disease in bTB highly prevalent dairy farms of Uruguay

C. Picasso-Risso; A. Gil; A. Nunez; A. Suanes; V. Macchi; X. Salaberry; J. Alvarez; A. Perez

doi:10.1016/j.vas.2019.100052

Diagnostic interaction between bovine tuberculosis (bTB) and Johne's disease in bTB highly prevalent dairy farms of Uruguay

C. Picasso-Risso, A. Gil, A. Nunez, A. Suanes, V. Macchi, X. Salaberry, J. Alvarez, A. Perez

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Abstract

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.

Original language	English (US)
Article number	100052
Journal	Veterinary and Animal Science
Volume	7
DOIs	https://doi.org/10.1016/j.vas.2019.100052
State	Published - Jun 2019

Bibliographical note

Funding Information:
The authors thank the veterinarians from the participant company for their willingness and time. This research was partially supported by Uruguayan Agency for Research and Innovation (ANII in the Spanish language), Plan Nacional de Investigación en Salud Animal & Comité de Investigación Científica de la Universidad de la República ( PLANISA – CSIC ). JA is the recipient of a Ramón y Cajal postdoctoral contract from the Spanish Ministry of Economy, Industry, and Competitiveness (MINECO) (RYC-2016-20422).

Publisher Copyright:
© 2019 The Authors

Keywords

Caudal fold tuberculin
Comparative cervical tuberculin
Dairy cattle
ELISA
Mycobacterium avium subsp. paratuberculosis (MAP)

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abstract = "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.",

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Diagnostic interaction between bovine tuberculosis (bTB) and Johne's disease in bTB highly prevalent dairy farms of Uruguay

Abstract

Bibliographical note

Keywords

PubMed: MeSH publication types

UN SDGs

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