Search
Now showing items 1-10 of 69
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, 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 ...
Efecto de la fuente de carbono y el tipo de inóculo sobre la producción de enzimas hidrolíticas del hongo anaeróbico ruminal Neocallimaxtis frontalis NFT 101.
(Corporación Colombiana de Investigación Agropecuaria, 2005)
El crecimiento y producción de enzimas del hongo anaeróbico Neocallimastix frontalis NFT 101, aislado del rumen de un ovino de un ecosistema tropical fue evaluado en un rango de fuentes de carbono y variando la forma de inoculación (estados mótil y vegetativo). Cuando se usó una suspensión de zoosporas (estado mótil) como inóculo, el hongo creció sobre xilosa, carboximetilcelulosa, celulosa en polvo, algodón, papel de ...
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 ...
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 ...
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 ...
The effect of grain sorghum silage mixed with urea-molasses-sulfur, cotton seed cake and fish meal supplemented during the dry season to dual purpose cattle for milk yield in the Sinu Valley (Colombia)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)
In the Sinu Valley region (Cordoba, Colombia), 12 dual purpose Holstein × Cebú cows in the first third of lactation were used to evaluate the response of supplementation sorghum (Sorghum vulgare) silage mixed with urea-molasses-sulfur, whole cottonseed and fish meal on milk yield over 60 days period. Treatments were: T1 = silage-0.100 kg of urea-0.250 kg of molasses and 0.004 kg of sulfur. T2 = silage-1.5 kg of ...
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 ...
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, ...