The aim if this study was to determine the prevalence of Fasciola hepatica in cattle at the slaughterhouse of the municipality of Une, Cundinamarca, Colombia. Sample size was calculated based on the slaughter rate of 2013 plus 6% increase (n=142). Adult parasites were collected from the biliary duct. Bile and faecal material were also collected. The modified Ritchie-Frick technique was used to analyse faecal samples. The prevalence of F. hepatica was 39.4% based on eggs in the bile, 32.4% based on the presence of adult parasites in biliary ducts and 15.5% based on the presence of eggs in faecal samples. Positive animals for presence of adult parasites plus eggs in bile and faecal samples was 15.5%.

El objetivo del presente estudio fue determinar la prevalencia de Fasciola hepatica en bovinos sacrificados en la planta de beneficio del municipio de Une, Cundinamarca, Colombia. El tamaño muestral fue calculado con base a la tasa de sacrificio de 2013 con 6% de incremento (n=142). Durante el eviscerado se recolectaron distomas adultos del ducto biliar, así como muestras del contenido biliar y materia fecal. En el examen coproparasitológico se empleó la técnica de Ritchie-Frick modificada. La prevalencia de F. hepatica fue 39.4% por presencia de huevos en el contenido biliar, 32.4% por presencia de parásitos adultos en los ductos biliares y 15.5% por presencia de huevos en materia fecal. El valor porcentual de animales positivos por presencia de estadio adulto, así como huevos en bilis y materia fecal fue de 15.5%.

            The aim of this study was to determine the relationship between the rickettsemia of A. marginale and environmental and genetic interactions in dual-purpose cattle in Arauca, Colombia. Blood samples were taken from 269 females from 14 farms, both in the dry and rainy seasons, and were analysed with the Wright and Hemacolor® techniques. The interaction between the presence of A. marginale with the variables breed type, season, age and parity was evaluated by analysis of variance. Resulted showed that 66.6% of positive animals to A. marginale were found in the dry season and 100% in the rainy season (p<0.001), presenting rickettsemia values between 0 and 0.14% (average: 0.04%). The rickettsia A. marginale showed interaction with the breed type (p<0.05), the creole animals and crosses of Brown Swiss x zebu and Simmenta...

            El objetivo del estudio fue determinar la relación existente entre la rickettsemia de A. marginale y las interacciones agroambientales y genéticas en bovinos de doble propósito en Arauca, Colombia. Se tomaron muestra de sangre a 269 hembras de 14 fincas, tanto en la época seca como de lluvias y fueron analizadas con las técnicas de Wright y Hemacolor®. Se evaluó la interacción entre la presencia de A. marginale con las variables grupo racial, época del año, edad y número de partos, mediante el análisis de varianza. Se encontró 66.6% de animales positivos en la época seca y 100% en la época lluviosa para A. marginale (p<0.001), presentando valores de rickettsemia entre 0 y 0.14% (promedio: 0.04%). La rickettsia A. marginale presentó interacción con el grupo racial (p<0.05), siendo más resistentes lo...

The aim of this study was to determine the prevalence of hepatic dystomatosis in cattle slaughtered in the Sogamoso slaughterhouse (Boyacá, Colombia), and to define the most effective diagnostic technique to establish the presence of the parasite. A sample size of 343 individuals was established considering the monthly slaughter rate of the plant. Stool, blood and bile samples were taken, and adult parasites were collected from the bile duct. The modified Ritchie technique was used in the coproparasitological examination, the bile content was analyzed by sedimentation and a standardized in-house ELISA was implemented for serological diagnosis from adult Fasciola hepatica parasites. The results showed that 29.7% (102/343) of the individuals sampled were positive for the presence of F. hepatica in at least one of the techniques used. The post mortem evaluation presented the highest value ...