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Mostrando ítems 475-494 de 570
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Rhipicephalus sanguineus (Latreille, 1806): Neotype designation, morphological re-description of all parasitic stages and molecular characterization
(2018-09)The aims of this work were to re-describe all parasitic stages of Rhipicephalus sanguineus sensu stricto, to select and deposit a neotype, and to characterize some of its diagnostic molecular traits. A male of R. sanguineus ... -
Rickettsia infection in Amblyomma tonelliae, a tick species from the Amblyomma cajennense complex
(2015-03)The present study was performed to evaluate the Rickettsia infection in Amblyomma tonelliae ticks from Argentina. All ticks were subjected to DNA extraction and tested by a battery of PCRs to amplify fragments of four ... -
Rickettsia spp., Ehrlichia sp. and Candidatus Midichloria sp. associated to ticks from a protected urban area in Buenos Aires City (Argentina)
(Springer, 2022-01)The aim of this study was to determine the infection with Rickettsiales in ticks and birds from the main protected urban area of Buenos Aires City (Argentina). One Amblyomma aureolatum (0.2%) and one Ixodes auritulus (0.1%) ... -
Riesgos ocupacionales en estudiantes de veterinaria en Argentina
(Facultad de Ciencias Veterinarias, Universidad Nacional del Nordeste, 2019)La práctica veterinaria expone a los individuos a una gran variedad de accidentes ocupacionales (AO) y enfermedades profesionales. Los objetivos de este trabajo fueron estimar: a) la frecuencia de AO y zoonosis, b) la ... -
Risk factors associated with failures of Varroa treatments in honey bee colonies without broodless period
(2015-09)The treatment against Varroa destructor has become a basic tool in beekeeping practices, mainly during autumn. The treatment effectiveness should be improved by identifying variables affecting the final outcome. The aim ... -
Risk factors associated with the presence of aflatoxin M1 in raw bulk milk from Argentina
(2016-06)The objectives of this study were to assess aflatoxin M1 (AFM1) contamination in bulk tank milk, and to further identify the risk factors associated with the presence of AFM1 in raw milk in Argentina. The presence of AFM1 ... -
Risk factors associated with the presence of Varroa destructor in honey bee colonies from east-central Argentina
(2014-08-01)Varroa destructor is considered one of the major threats for worldwide apiculture. Damage caused by varroa mite includes body weight loss, malformation and weakening of the bees. It was also suggested as the main cause ... -
Risk factors for the presence of Deformed wing virus and Acute bee paralysis virus under temperate and subtropical climate in Argentinian bee colonies
(2017-05)Beekeepers all across the world are suffering important losses of their colonies, and the parasitic mites Varroa destructor and Nosema sp, as well as several bee viruses, are being pointed out as the possible causes of ... -
Risk factors of S. aureus intramammary infection in pre partum dairy heifers under grazing conditions and molecular characterization of isolates from heifers and cows
(Cambridge University Press, 2020-02)The aims of the research reported here were to identify potential risk factors associated with the presence of Staphylococcus aureus intramammary infection (IMI) in pre partum dairy heifers on 17 dairy farms from three ... -
Risks of cattle babesiosis (Babesia bovis) outbreaks in a semi-arid region of Argentina
(Elsevier, 2019-10)The epidemiology of Babesia bovis was studied in terms of enzootic stability/instability and husbandry and abiotic factors influencing B. bovis transmission rate in northeastern Santiago del Estero province, Argentina. The ... -
Rol de las garrapatas Rhipicephalus (Boophilus) microplus y Amblyomma tonelliae en la transmisión de Anaplasma marginale en Argentina
(Facultad de Ciencias Veterinarias, Universidad Nacional del Litoral, 2022)Anaplasma marginale es el agente causal de la anaplasmosis bovina, enfermedad que provoca importantes pérdidas económicas en la ganadería argentina. Una de las vías de transmisión de A. marginale es por garrapatas. En ... -
Seasonal dynamics, geographical range size, hosts, genetic diversity and phylogeography of Amblyomma sculptum in Argentina
(2018-04)The aim of this work was to generate knowledge on ecological aspects of Amblyomma sculptum in Argentina, such as seasonal dynamics, geographical range size, hosts, genetic diversity and phylogeography. Adult and immature ... -
Seasonality of immature stages of Ixodes loricatus (Acari: Ixodidae) in the Paraná Delta, Argentina
(2014-10)In this study we analyzed seasonal trends of immature stages of Ixodes loricatus parasitizing Akodon azarae (Sigmodontinae) in a locality of the Paraná Delta, Buenos Aires, Argentina. The data encompassed two consecutive ... -
La seguridad en la cadena agroalimentaria de la carne: problemáticas, estrategias y posibles soluciones pre–faena
(2013)En la Cumbre Mundial sobre la Alimentación, celebrada en Roma en 1996, se estableció que existe Seguridad Alimentaria cuando todas las personas, en todo momento, tienen acceso físico y económico a suficientes alimentos ... -
Seguro índice para la gestión del riesgo de precios en el sector lechero argentino
(AAEA, 2016-10)En este trabajo se presenta una propuesta de aplicación de un instrumento de gestión del riesgo de precios para el sector lechero, que es una adaptación de lo que se conoce como "seguro de protección de márgenes" ("margin ... -
Seguro índice para la gestión del riesgo de precios en el sector lechero argentino
(Centro de Investigación en Ciencias Políticas, Económicas y Sociales. Instituto de Economía, 2016)En este trabajo se presenta una propuesta de aplicación de un instrumento de gestión del riesgo de precios para el sector lechero, que es una adaptación de lo que se conoce como “seguro de protección de márgenes” (“margin ... -
Seguros agropecuarios basados en índices. Situación actual y visión de mercado de compañías aseguradoras
(Facultad de Ciencias Económicas, Universidad de Buenos Aires, 2022-04)En el presente trabajo se aborda el estado de desarrollo de los seguros agropecuarios basados en índices en Argentina. Asimismo, se analizan la penetración de mercado y las perspectivas comerciales a cinco años a través ... -
Selection by seed weight improves traits related to seedling establishment in Panicum coloratum L. var. makarikariense
(Wiley, 2013-12)Selection for heavy seed was implemented to overcome establishment problems in Panicum coloratum var. makarikariense. A collection covering the genetic diversity of the species available in Argentina was used as a base ... -
Sensitivity of Anaplasma marginale genotypes to oxytetracycline assessed by analyzing the msp1α gene in experimentally infected cattle
(Elsevier, 2021-09)The aim of this study was to evaluate the influence of the long-acting oxytetracycline (OTC) treatment on A. marginale genotypes of the isolate S1P, by analyzing the msp1α genotype based on a microsatellite (ms) and tandem ... -
Sequía y deficiencia de fibra en dietas de vacas lecheras
(Estación Experimental Agropecuaria Balcarce, INTA, 2023-04)En el contexto actual de sequía extrema, donde la mayoría de los productores lecheros está atravesando o atravesará un déficit en la disponibilidad de forraje, resulta imperioso formular raciones que cubran los requerimientos ...