Regular diagnosis of leptospirosis is carried out by the microscopic agglutination test (MAI) which is defined as positive when readings are ≥ 1:100. Since this test only detects antibodies classified as M, it is considered ineffective for acceptable diagnosis in both: individuals or populations. Consequently, the level of infection in swine farms has been underestimated. A methodology was developed to improve reliability ...

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 ...

The methods commonly used to predict animal behavior as a function of feeding management, are in a process of change. The systems currently used for estimating the animal requirements based on static algebraic equations have begun to be replaced by dynamic simulation models capable of characterizing animal response for a much wider range of conditions to that used in traditional systems. In this article models are ...

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 ...

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 effects of climate change on bovine feed availability in dry areas is a major constraint; as an innovation ten woody forages were selected in the dry zone of Rivas (Nicaragua), within which there are functional differences (nutritional, physical and phenological), that show the variability among the woody ones, such as leguminous without thorns (Albizia niopoides, Gliricidia sepium, Leucaena leucocephala, Samanea ...

The 90% of potential agricultural soils in Cesar (Colombia) are affected by varying degrees of impairment, negatively impacting livestock production, which is one of the most important economic activities in the region. The aim of the study was to contribute to the recovery of degraded grasslands, to progress in rescuing the productive capacity of the affected areas and to improve the sustainability and competitiveness ...

Livestock activities cause a significant impact on the environment due to the release of N into the soil, which in turn results in nitrification and the emissions of greenhouse gases (GHG). At Corpoica’s Turipaná Research Center (Cereté, Colombia), we evaluated three different genotypes of B. humidicola (CIAT 16888, CIAT 26159, and CIAT 679) with three levels of nitrogen fertilization application (0, 150, and 300 kg ...

Pennisetum clandestinum (kikuyo) is a common pasture in the altiplano cundiboyacense silvopastoral systems, which possesses high nutritional value. Therefore, studies to improve the production process in both economic and environmental terms are very important. The role of inoculation with plant growthpromoting bacteria was evaluated on the growth of kikuyu grass. The 4K and 5B strains were identified, through amplification ...

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); ...