El objetivo del presente estudio fue identificar las poblaciones y prevalencia de parásitos gastrointestinales en bovinos del departamento de Arauca, Colombia, categorizados por grupo etario Se procesaron 1351 muestras de materia fecal de bovinos doble propósito. Las prevalencias de parásitos gastrointestinales fueron de 54% para Neospora caninum, 51% para Haemonchus sp, 45% para Ostertagia ostertagi, 32% para Trichostrongylus sp, 22% para Cooperia sp, 7% para Eimeria sp, 6% para Oesophagostomumsp, 3% para Nematodirus sp, 2% para Strongyloides sp y 1% para Ascaris suum, Bunostomum sp y Moniezia benedeni (1%).

The present study was carried out in the rural area of the department of Arauca, in the Orinoquía region, Colombia. A total of 1351 faecal samples from dual purpose cattle were collected and processed using the Baerman coprological technique for the detection of Dictyocaulus viviparus. A prevalence of 1.7% of D. vivarus is reported in Arauca, whose environmental conditions are considered adverse for the development of the nematode and do not coincide with those traditionally reported in the country and in the world.