Open AccessDetección de anticuerpos anti-Mycobacterium avium subsp. paratuberculosis en bovinos de hatos lecheros de trópico bajo en Colombia
Author(s) -
Nathalia María Correa-Valencia,
Ferney Arango-Lezcano,
Jorge Arturo Fernández-Silva
Publication year - 2020
Publication title -
revista mvz córdoba/revista mvz cordoba
Language(s) - English
Resource type - Journals
eISSN - 1909-0544
pISSN - 0122-0268
DOI - 10.21897/rmvz.1782
Subject(s) - paratuberculosis , mycobacterium avium subsp. paratuberculosis , biology , brucella abortus , geography , veterinary medicine , mycobacterium , medicine , virology , genetics , bacteria , brucellosis
Objective. To report the frequency of seropositivity against Mycobacterium avium subsp. paratuberculosis (MAP) and to explore the factors associated with the positive outcome, both at herd and animal level. Materials and methods. A cross-sectional study was carried out on 204 dairy cows, result of the crossing of different breeds, from five low-tropic dairy herds, located in three municipalities of the Provinces of Sucre and Córdoba (Colombia) in 2018. The animals were randomly selected, and blood samples were collected from each one. A commercial ELISA kit was used to analyze the sera, and the association between these variables and the result to ELISA (p<0.05) was explored. Results. The 17.2% (35/204; 95% CI: 12.0-22.3%) of the cows were positive for MAP by the ELISA test, and the five herds had seropositive animals. The herd-level variable presence of other ruminants in co-grazing with cattle in the last 2 years and the animal-level variables age and parity were associated with the positive ELISA results. Conclusions. The present study found that 17.2% of the cows and 100% of the herds were MAP positive by the ELISA test. Additionally, associated variables were identified that may be of interest to both producers and veterinarians and guide their approach to disease management.