Resumen de Relación entre agua de bebida, manejo del estiércol y riesgo de infección por fasciola hepatica en vacuno lechero del centro de colombia

R. Bonilla Vilela, S. Miguélez Fernández, J. Sanchís Rodríguez, F.L. Arroyo, M. Ramirez, J.A. Hernández, R. Francisco, A. Paz Silva, R. Sanchez Andrade, M.S. Arias

• The possible relationship between the source of drinking water, manure management and the risk of exposure to the liver trematode Fasciola hepatica has been assessed among dairy cows from Central Colombia. Individual samples of faeces and blood were obtained from 374 cattle, which were analyzed with the sedimentation test and the FhrAPS-ELISA, respectively. The percentage of cow passingF.hepatica eggs in the feces was 3% (95% CI 2-5), and 10% (0-21) of the farms had cattle positive to the sedimentation test. F. hepatica egg-output was only observed in cattle from 2 out of 17 (12%; 0-27) municipalities (Albán and Zipaquirá), where the cattle-prevalence was 25% (8-42). By using the FhrAPS-ELISA, the individual seroprevalence was 40% (35-45), and 93% (84-100) of the farms had cattle positive to the immunoenzymatic probe. Cattle of all the municipalities were positive to the ELISA, and the values ranged from 15% (1-28) in Soacha to 86% (60-100) in Cajicá. Eggs of F. hepatica were only detected in cows that graze on grasslands where the faeces are not collected or stored. Cows drinking water from streams were the unique positive to the sedimentation test. The highest values of seroprevalence were observed in those which did it from wells.