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Anaerobic soil bacteria causing sudden death in cattle feeding on tropical savannahs: research in ColombiaBacterias anaerobias del suelo responsables de la muerte súbita bovina en sabanas tropicales: investigaciones realizadas en Colombia
(Corporación colombiana de investigación agropecuaria - AGROSAVIA, 2008)
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 ...
Application of the Cornell Net Carbohydrate and Protein System for tropical conditionsAplicación del sistema de carbohidratos y proteína neta de Cornell para condiciones tropicales
(Corporación colombiana de investigación agropecuaria - AGROSAVIA, 2001)
Cattle are used to convert forages, feed grains, and food byproducts into human food under production conditions that vary in soil, climate, feed composition and types of cattle. An analysis of our data base and our piblished data with lactating dairy cows indicate cattle performance is restricted to the level allowed by the most limiting nutrient, and that energetic efficiency is influenced by amino acid balance. The ...
Efecto de la suplementación con ensilaje de millo adicionado con urea-melaza-azufre, semilla de algodón y harina de pescado sobre la producción de leche en vacas doble propósito durante la época seca en el Valle del Sinú
(Corporación colombiana de investigación agropecuaria - AGROSAVIA, 2008)
Este trabajo tuvo como objetivo evaluar la respuesta productiva y económica de la suplementación de vacas doble propósito en pastoreo de Angleton (Dichanthium aristatum) con ensilaje de millo (Sorghum vulgare) más urea-melaza-azufre, semilla de algodón y harina de pescado en la estación seca en el Valle del Sinú (Colombia). A tal fin se utilizaron 12 vacas Holstein × Cebú en el primer tercio de lactancia, distribuidas ...
Lineaje-exclusion, a strategy for breeding rice with durable resistance to Pyricularia grisea Sacc. in ColombiaExclusión de linajes como estrategia para la obtención de resistencia durable en el arroz a Pyricularia grisea Sacc. en Colombia
(Corporación colombiana de investigación agropecuaria - AGROSAVIA, 2003)
Rice blast has challenged plant breeders when they were searching for durable resistance in Colombia. Rapid resistance breakdowns were commonly observed in newly bred cultivars and they are attributed to frequent appearance of new pathotypes. Recent population studies of the rice blast pathosystem have shown that Pyricularia grisea in a given region, typically expresses a phylogenetic organization of distinct lineages ...
Some studies on allelopathy of Rumex crispus L. and Polygonum segetum HBK., in ColombiaAlgunos estudios de alelopatía de Rumex crispus L. y Polygonum segetum HBK., en Colombia.
(Corporación colombiana de investigación agropecuaria - AGROSAVIA, 2003)
Curly dock (Rumex crispus, ‘lengua de vaca’) and smartweed (Polygonum segetum, ‘gualola’), are two common weed species that grow in subtropical areas of the world, where cause great losses in crops and grasslands due to their aggressiveness. In Colombia they are found on lands over 2000 m.o.s.l., and as they propagate by both, sexual and vegetative ways, it is very difficult to manage them. Several experiments were ...
Comparative leaf anatomy of lulo (Solanum quitoense Lam.) materials with and without thornsAnatomía foliar comparativa de materiales de lulo (Solanum quitoense Lam.) con y sin espinas
(Corporación colombiana de investigación agropecuaria - AGROSAVIA, 2008)
A study was carried out to describe the lulo (Solanum quitoense Lam.) leaf anatomy of materials with thorns (CE, accession ‘NM’) and thorn less (SE, accession ’SV80’) under full sun exposure, in the upper, middle and lower plant strata, during the vegetative and productive phases. No significant morphological differences between the leaf structures of both genotypes were found during the ontogenic studied periods. Both ...
Variability and additive, non additive and total genetic predictions in the multibreed, Sanmartinero-Cebu beef cattle herd in La Libertad Research CenterVariabilidad y predicciones genéticas aditivas, no aditivas y totales para Ia producción de ganado de carne en el rebaño multirracial Sanmartinero-Cebú de La Libertad.
(Corporación colombiana de investigación agropecuaria - AGROSAVIA, 2001)
Calf growth data from the Sanmartinero-Zebu multibreed herd located at the La Libertad Research Center were used to obtain estimations of additive genetic ratios (heritabilities), non additive genetic atios (interactibilities), and additive, non additive, direct and maternal genetic correlations for birth weight, weaning weight (240 d), and postweaning gain (240 to 480 d). Additive and non additive genetic values were ...
Cell wall degradation of Bouteloua repens in vitro by pure cultures of R. flavefaciens and F. succinogenes isolate from cattle grazing tropical lowland pastures in ColombiaDegradación in vitro de Bouteloua repens por cultivos de R. flavefaciens y F. succinogenes aislados de ganado alimentado con pastos tropicales en Colombia
(Corporación colombiana de investigación agropecuaria - AGROSAVIA, 2003)
The capacity to degrade the cellular wall of Bouteloua repens of 12 isolates of Ruminococcus flavefaciens and 17 isolates of Fibrobacter succinogenes was determined. A procedure was developed to standardize both, the inoculum and the substrate concentration for in vitro incubations of pure culture isolates.The ruminal bacteria were isolated from either Bos indicus cattle from the Alto Magdalena region of Colombia, ...
Chemical residues in food from animal origin: problems and challenges for innocuous food in ColombiaResiduos químicos en alimentos de origen animal: problemas y desafíos para la inocuidad alimentaria en Colombia
(Corporación colombiana de investigación agropecuaria - AGROSAVIA, 2008)
Innocuity from foods of animal origin can be affected by chemical residues, a potential hazard for public health.. Chemical substances are inevitable linked to cattle farming due to medications to treat infections, parasite infestation and clearing and disinfection processes of utensils, as well as weed controls. Chemical residues of animal origin are undesirable because the can be harmful to the consumer. At present, ...
Early identification of papaya sex type from seed physical characters and seedlings isozyme patternsIdentificação antecipada do sexo do mamoeiro pelos caracteres físicos das sementes e padrões isoenzimáticos das mudas
(Corporación colombiana de investigación agropecuaria - AGROSAVIA, 2008)
Identification of papaya sex can only be done four months after transplanting. The possibility of earlier sex identification either with isoenzymatic patterns or physical seed traits were evaluated in two commercial seeds: the hybrid Tainung 1 and Improved Sunrise Solo 72/12 four experiments were carried out in the Lavras municipality, Minas Gerais (Brazil). The first two experiments evaluated the relationship of seed ...