Browsing Artículos Científicos by Title
Now showing items 572-591 of 598
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Ticks infesting humans in Central America: A review of their relevance in public health
(Elsevier, 2022)Ticks are blood-sucking arthropods that parasitize most groups of terrestrial or semiaquatic vertebrates. Humans are accidental hosts to the ticks; however, in humans the ticks can cause damages varying from simple ... -
Transient exposure to sublethal concentrations of a pesticide mixture (chlorpyrifos–difenoconazole) caused different responses in fish species from different trophic levels of the same community
(Elsevier, 2021)The assessment of early effects caused in biota by sublethal exposure to pesticide mixtures should enhance the realism in the ecological risk assessment for agricultural landscapes. This study aimed to evaluate ... -
Tratamiento de sarcoide equino: reporte de cuatro casos clínicos
(Universidad Nacional, Costa Rica, 2015-05-08)El sarcoide equino es el tumor cutáneo más frecuente en caballos, con presentaciones y localizaciones variables en la piel. Este artículo tiene como objetivo describir la presentación, el abordaje y la evolución de cuatro ... -
Trypanosoma cruzi Infection in Rhodnius pallescens (Heteroptera: Reduviidae) Infesting Coyol Palms in the Dry Arch of Panamá
(Oxford University Press on behalf of Entomological Society of America, 2018-02-07)Ecoepidemiological scenarios for Trypanosoma cruzi Chagas transmission are partially shaped by kissing bug vector ecology. The presence of Attalea butyracea Kunth, the ‘royal palm’, is a major risk factor for Chagas ... -
Two groups of cocirculating, epidemic clostridiodes difficile strains microdiversify through different mechanisms
(Oxford University Press, 2018-03-14)Clostridiodes difficile strains from the NAPCR1/ST54 and NAP1/ST01 types have caused outbreaks despite of their notable differences in genome diversity. By comparing whole genome sequences of 32 NAPCR1/ST54 isolates and ... -
Ultrasonographic measurement of the equine fetal vitreous body length for predicting days to parturition in Pura Raza Española horses
(Universidad Nacional, Costa Rica, 2019)Ultrasonographic measurement of the fetal vitreous body length to predict parturition date in horses has shown substantial differences between breeds. PRE (Pura Raza Española or Purebred Spanish ... -
Ultrasonographic screening of embryo development in cattle (Bos indicus) between days 20 and 40 of pregnancy
(Elsevier, 2005-03-09)Through a transrectal ultrasonography (Aloka SSD 500 microplus equipment, linear transducer of 7.5 MHz) a total of 267 observations were performed in a group of 50 females mainly Bos indicus, raised under humid tropical ... -
Ultrasonography as Aid for Early Pregnancy Diagnosis in Zebu Cattle in a Natural Mating Programme
(Taylor and Francis Group, 2006)To utilise ultrasonography in Zebu cattle to test early pregnancy, multiparous Bos indicus COWS (n=74) were allocated with 2 mature Brahman bulls, which were replaced with new ones every four weeks. COWS were bled for ... -
Understanding Ehrlichia canis infections in dogs of Costa Rica: hematological findings and indicative clinical signs
(Universidad Nacional, Costa Rica, 2016-11-30)Background: A cross-sectional study combining different serological and molecular techniques for the detection of Ehrlichia canis in dogs was carried out to determine hemopathological findings and suggestive clinical ... -
Underwater diseases... A silent threat: fungal infections in octocorals
(WDA Latin America, 2017-07)Research on wildlife diseases is a challenge that goes from determining a significant sample size to choosing the sampling site and then confronting the particularities of field work and the studied species. The challenge ... -
Utilidad de la palpación rectal y la ecografía transrectal en el diagnóstico de gestación del ganado cebú en el trópico húmedo de Costa Rica
(Revista Cientifica de la Facultad de Ciencias Veterinarias de la Universidad del Zulia, 2011-10-13)The diagnostic efficacy of rectal palpation (RP) was compared to ecography (EG) in a natural mating program of Zebu cattle under Costa Rican tropical conditions. Grazing and lactating Bos indicus females, 98 each year (2005 ... -
Utilización de residuos de piña para alimentación de cabras: Efecto sobre la producción y composición láctea
(Universidad de Costa Rica, 2019)El objetivo del presente estudio fue evaluar el efecto de la suplementación con subproductos frescos del proceso de la piña (SDP), en la dieta de cabras lactantes, sobre el consumo, la producción y composición de la ... -
Utilização do ultrassom modo-B no estudo do sistema reprodutivo de fêmeas suínas
(Revista Brasileira de Reprodução Animal, 2009)The introduction of real time ultrasound on swine industry has had a strong impact in the development of the reproductive performance evaluation of swine herds. With this technology, it is possible to diagnose gestation ... -
UV-C LED irradiation reduces Salmonella on chicken and food contact surfaces
(MDPI, 2021-06-24)Ultraviolet (UV-C) light-emitting diode (LED) light at a wavelength of 250–280 nm was used to disinfect skinless chicken breast (CB), stainless steel (SS) and high-density polyethylene (HD) inoculated with Salmonella ... -
Valores de la relación grasa/proteína y nitrógeno ureico en leche de vacas lecheras de la zona norte de Alajuela y Heredia, Costa Rica
(Universidad Nacional, Costa Rica, 2016)Los componentes de la leche brindan una herramienta económica, menos invasiva al monitorear el balance metabólico y la ración suministrada a ganado lechero. Con el fin de determinar valores de grasa, proteína, la ... -
Variations in the temperature-humidity index and dorsal fat thickness during the last trimester of gestation and early postpartum period affect fertility of Bos indicus cows in the tropics
(Hindawi, 2018-07-24)In order to measure the infuence of the temperature-humidity index (THI) and the variation of fat thickness on reproductive performance, ninety-two Bos indicus cows kept under grazing conditions were used in two farms in ... -
Vector-borne pathogens in dogs from Costa Rica: first molecular description of Babesia vogeli and Hepatozoon canis infections with a high prevalence of monocytic ehrlichiosis and the manifestations of co-infection
(Veterinary Parasitology, 2014-01-31)Infection with canine vector-borne pathogens was evaluated in dogs from four different regions of Costa Rica by PCR. Demographic data, clinical signs, packed cell volume values, and the presence of tick infestation were ... -
Vesicular stomatitis virus glycoprotein is a determinant of pathogenesis in swine, a natural host
(American Society for Microbiology., 2003-07)There are two major serotypes of vesicular stomatitis virus (VSV), Indiana (VSIV) and New Jersey (VSNJV).We recovered recombinant VSIVs from engineered cDNAs that contained either (i) one copy of the VSIV G gene(VSIV-GI); ... -
Virulent Brucella nosferati infecting Desmodus rotundus has emerging potential due to the broad foraging range of its bat host for humans and wild and domestic animals
(American Society for Microbiology, 2023-07-05)Desmodus rotundus, vampire bats, transmit dangerous infections, and brucellosis is a hazardous zoonotic disease, two adversities that coexist in the subtropical and tropical areas of the American continent. Here, we ... -
What have we learned from brucellosis in the mouse model?
(Veterinary Research, 2012)Brucellosis is a zoonosis caused by Brucella species. Brucellosis research in natural hosts is often precluded by practical, economical and ethical reasons and mice are widely used. However, mice are not natural Brucella ...