Listar Artículos científicos por fecha de publicación
Mostrando ítems 301-320 de 653
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Detección de serovares de Salmonella en terneros de crianza artificial de la región lechera Mar y Sierras, Argentina
(Elsevier, 2019-01-09)La salmonelosis es una de las enfermedades bacterianas que afectan el tracto digestivo de los terneros y provocan en ellos diarrea. Con el objetivo de estudiar la prevalencia de los distintos serovares de Salmonella en ... -
Evaluation of different live Salmonella enteritidis vaccine schedules administered during layer hen rearing to reduce excretion, organ colonization, and egg contamination
(Oxford University Press, 2019-01-25)Salmonellosis caused by Salmonella Enteritidis is a widespread zoonosis and poultry products are an important source of infection. This study was carried out to evaluate the protection of different vaccination schedules ... -
Adequate vegetative cover decreases nitrous oxide emissions from cattle urine deposited in grazed pastures under rainy season conditions
(Nature Publishing, 2019-01-29)A decline in pasture productivity is often associated with a reduction in vegetative cover. We hypothesize that nitrogen (N) in urine deposited by grazing cattle on degraded pastures, with low vegetative cover, is highly ... -
Production of fodder in a treeless system and in silvopastoral system in central Argentina
(Instituto de Florestas da Universidade Federal Rural do Rio de Janeiro, 2019-01-31)This paper aims to identify the spatial and temporal distribution of net aerial primary production (NAPP) of oats and sorghum in silvopastoral systems (SPS) and in a treeless situation (TLS), in Southern Cordoba, Argentina. ... -
Productive response to two concentrate allocation strategies in dairy cows grazing with restricted pasture allowance
(2019-02)The objective of this study was to compare the effects of two concentrate allotment strategies on the performance of dairy cows grazing on restricted pasture and supplemented with conserved forage. Dairy cows fed equal ... -
Ecosystem services approach in Latin America: from theoretical promises to real applications
(Elsevier, 2019-02)In the Latin American context, knowledge generation alone will not solve socio-environmental problems. Consensus is as important for ESA mainstreaming, and there is not a direct link between knowledge and consensus. That ... -
Frost damage on grain number in wheat at different spike developmental stages and its modeling
(Elsevier, 2019-02)Frosts may damage wheat (Triticum aestivum L.) spikes and severely reduce their yield. The objective of this study was (i) to quantify the level of susceptibility to frost at different spike developmental stages, and (ii) ... -
Estimating the risk of groundwater contamination and environmental impact of pesticides in an agricultural basin in Argentina
(Springer Verlag, 2019-02)Due to the increase in pesticide detection in groundwater and other environmental components, some indicators, such as the attenuation factor (AF) and the environmental impact quotient (EIQ), have been proposed to determine ... -
Modelación productiva, económica y de gases de efecto invernadero de sistemas típicos de cría bovina de la pampa deprimida
(Universidad de Concepción. Facultad de Agronomía, Facultad de Ingeniería Agrícola y Facultad de Ciencias Veterinarias, Chile, 2019-03)El objetivo de este estudio de simulación fue evaluar la respuesta productiva, económica y de emisión de gases de efecto invernadero (GEI) en establecimientos típicos de la Pampa Deprimida de Argentina. Se utilizó ... -
Caracterización del uso del silo bolsa en la provincia de Buenos Aires
(Facultad de Ciencias Agrarias, Universidad Nacional de Rosario, 2019-03-03)En Argentina existen numerosos estudios aconsejando cómo utilizar el silo bolsa, sin embargo, no se ha analizado la manera en que los productores usan realmente esta tecnología. El objetivo de este trabajo es caracterizar ... -
Effect of combined stress (salinity + hypoxia) and auxin rooting hormone addition on morphology and growth traits in six Salix spp. Clones
(Springer Nature, 2019-04-15)Willows plantations development could be an alternative for hydro-halomorphic soils but it is limited by combined stress salinity + hypoxia (main stressor under waterlogging conditions). We studied the effects of saline ... -
Prognosis and diagnosis of sulfur status in maize by plant analysis
(Elsevier, 2019-05)The analysis of sulfur concentration (SC) and nitrogen to S ratio (N/S) in plant tissue are some of the suggested tools to evaluate S deficiency in maize (Zea mays L.). However, the convenience of one over the other and ... -
Systemic granulomatous disease in dairy cattle from Argentina
(Brazilian Association of Veterinary Pathology, 2019-05-30)An outbreak of systemic granulomatous disease of unknown etiology was diagnosed in a dairy herd from Argentina. Eleven out of 211 cows manifested hyperthermia, depression, alopecia, pruritus, decreased milk production and ... -
Comparative analysis of replicative properties of phylogenetically divergent, Argentinean BoHV-4 strains in cell lines from different origins
(Elsevier, 2019-06)Bovine gammaherpesvirus 4 (BoHV4) is a member of the family Herpesviridae. In Argentina, BoHV4 was isolated and characterized in 2007 from samples of aborted cows. Argentinean isolates are highly divergent and are classified ... -
Predicting soybean losses using carbon dioxide monitoring during storage in silo bags
(Elsevier, 2019-06)The rapid increase of the overall grain production of Argentina resulted with a storage capacity deficit in permanent structures of 40–50 million tons, and this context favored the rapid adoption of the silo bag technology. ... -
Glyphosate runoff and its occurrence in rainwater and subsurface soil in the nearby area of agricultural fields in Argentina
(Elsevier, 2019-06)Glyphosate-based products are among the most important herbicides applied to enhance the production of food commodities, leading to the worldwide spread of this herbicide. The main goal of this work was to evaluate the ... -
Uso del índice de verdor para determinar la dosis optima económica de nitrógeno en maíz
(Asociación Argentina de la Ciencia del Suelo, 2019-06)En regiones con excesos hídricos al comienzo de la estación de crecimiento, la aplicación de nitrógeno (N) en estadíos tempranos del maíz no es la mejor estrategia para maximizar la eficiencia de uso de dicho nutriente. ... -
Modulation of cathelicidins, IFNβ and TNFα by bovine alpha-herpesviruses is dependent on the stage of the infectious cycle
(Elsevier, 2019-07)Production of antimicrobial peptides cathelicidins, interferons and cytokines is an important feature in airway epithelial host defense. The innate immune response to alpha-herpesvirus infection at the sites of primary ... -
Evaluating the impacts and benefits of sheldgeese on crop yields in the Pampas region of Argentina: a contribution for mitigating the conflicts with agriculture
(Elsevier, 2019-07-01)Conflicts between waterfowl and agriculture are common in many nations around the world. However, these birds can also provide a variety of benefits that humanity can obtain from nature. There are three migratory and endemic ... -
A dose-dependent response to MEK inhibition determines hypoblast fate in bovine embryos
(BioMed Central, 2019-07-04)Background: The segregation of the hypoblast and the emergence of the pluripotent epiblast mark the final stages of blastocyst formation in mammalian embryos. In bovine embryos the formation of the hypoblast has been ...