Abstract

BENAVIDES BENAVIDES, Bibiana; ARTEAGA CADENA, Ángela Viviana  and  MONTEZUMA MISNAZA, Carlos Alberto. Epidemiological Study of Bovine Paratuberculosis in Dairy Herds in Southern Narino, Colombia. Rev. Med. Vet. [online]. 2016, n.31, pp.57-66. ISSN 0122-9354.

Introduction: Paratuberculosis (PTB), or Johne's disease, is a chronic gastrointestinal disorder in domestic and wild ruminants caused by Mycobacterium avium subspecies paratuberculosis (MAP). It is distributed worldwide and generates a high impact on livestock, due to a decrease in production, loss of genetic potential by early replacement of infected animals, and increase in mortality. Objectives: To evaluate the presence of anti-MAP antibodies in dairy farms in southern Narino and to describe their distribution according to population characteristics. Methods: A descriptive cross-sectional study was performed on 958 cows over 2 years of age in 16 dairy farms. To determine the presence of antibodies, the indirect Elisa diagnostic test was used (Svanova® commercial kit). Seropositivity was associated with variables of race, age, location, body condition, lactation number, and clinical state by using the chi-square test statistic. Results: There were found 15 farms (94%) with at least one positive animal and 77 cows (8%) with anti-MAP antibodies. A significant association (p < 0.05) with the animal's body condition was established. Conclusions: Cows with anti-MAP antibodies were found in major dairy municipalities; it was found that MAP-seroprevalence is not connected to age, race, location and clinical status, but it is linked to body condition.

Keywords : indirect Elisa; dairy farms; Mycobacterium avium subsp.paratuberculosis (MAP); paratuberculosis.

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