Written Paper


Andrés Timaran-Rivera Bayron R. León-Muñoz Universidad de Nariño [Corporate Author]

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The present case study, reported an acute outbreak of bovine anaplasmosis that took place in the farm “San Miguel”, located in Nariño municipality, department of Nariño in Colombia. This town has had a livestock trajectory of more than fifty years, during which no outbreaks or individual cases of bovine anaplasmosis were stated. Its higher prevalence has been reported in tropical and subtropical climates but due to the current climate changes the planet and the region are facing, this disease has expanded along with its vectors, to areas where it was previously unknown. Thirty seven clinical cases and six mortalities occurred during the disease critical period when the affected animals, mostly in a productive state, were not older than four years old. Fever, decrease and loss of milk production, anorexia, depression, emaciation as well as abortion were the main symptoms and, in hyperacute cases, the death of animals. The diagnosis was made through blood counts and Giemsa-stained blood smears analysis. The results confirmed anemia and the presence of rickettsia within the bovine blood erythrocytes. At the necropsy, splenomegaly, ruminal impaction, protruding hemorrhagic areas at endocardium level, very compact excrement, and other incidental outcomes were mainly found. The established treatment was aimed at stabilizing patients, fighting infections and general prevention on the farm. Although most animals responded to the established treatment, the highest
cases of abortions and ceasing milk production were present in acute cases of anaplasmosis, destabilizing and threatening the future of the company.

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Investigación Pecuaria

ISSN : 2248-4558