A study was conducted in 36 farms of the Bogotá Savannah, Ubaté and Chiquinquirá Valleys and Tequendama Region (Cundinamarca), to determine via in vivo egg reduction count test (ERCT) antihelmintics resistance to bovine gastrointestinal nematodes. Resistance was determined in. 40 calves, three to 12 months of age, allotted to four groups of ten animals each one: 1) control (untreated); 2) albendazol 25% (5 mg/kg); ...

The study of the clostridiosis in Colombia must be a priority for sanitary authorities due to the sanitary and economic impact caused by these bacteria. Disease clinical signs and symptoms, and effect on animals in good meat condition suppose a high financial impact. This article reviews major research in clostridiosis in recent years, published in scientific and gray literature. Emphasis is made on bovine sudden ...

Colombia is going through a dynamic research and technology transfer effort in order to improve its livestock enterprise.Animal production systems of twenty-two ecoregions in the lowland tropics are being characterized for ex-ante analysis to define technological alternatives.The Valley of Cesar in northern Colombia is a micro-region where agriculture has been its traditional production system, but now, 80% of the land ...

The induced humoral immune response against structural proteins of Indiana and New Jersey serotypes of the vesicular stomatitis virus was compared using serum obtained from vaccinated bovine, natural and experimentally infected ones. It was used Western blot technique to observe the recognition of protein G by serum of vaccinated animals, and the response to proteins G and N by serum of infected animals. Serum of ...