Browsing Artículos Científicos by Title
Now showing items 341-360 of 598
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Infectious agents associated with diarrhoea of calves in the canton of Tilarán, Costa Rica
(Elsevier Science B.V, 1997-01)A case-control study of calves under 3 months of age was carried out by weekly visits to 15 farms in the canton of Tilarán, Costa Rica. Most farms were dedicated to beef or dual-purpose (DP) production. Faecal samples were ... -
Interactions between optimal replacement policies and feeding strategies in dairy herds
(Elsevier, 2001)A dynamic performance model was integrated with a model that optimised culling and insemination policies in dairy herds using dynamic programming. The performance model estimated daily feed intake, milk yield and body ... -
Intervalo parto-concepción en ganado lechero especializado de Costa Rica
(Universidad Nacional, Costa Rica, 2019-03-25)Resumen: Un hato lechero eficiente debe producir una cría viva y sana por vaca, por año, y esto se debe de conseguir con un Intervalo Parto Concepción (IPC) no superior a 100 días. Objetivo: describir aspectos epidemiológicos ... -
Intoxicación por Senna cobanensis en terneros cebuinos: Primer reporte de caso
(Universidad Nacional, Costa Rica, 2023)Las plantas del género Senna pertenecen a la familia Fabaceae, distribuidas, mundialmente, en zonas tropicales y subtropicales. Algunas especies del género contienen productos del metabolismo secundario, los cuales se ... -
Intracellular adaptation of Brucella abortus
(Universidad Nacional, Costa Rica, 2009-03)Macrophages were infected with virulent B. abortus strain 2308 or attenuated strain 19. Intracellular bacteria were recovered at different times after infection and their proteomes compared. The virulent strain initially ... -
Is the production of embryos in small-cale farming an economically feasible enterprise?
(Reproduction in Domestic Animals, 2015-04)The present assay attempts to evaluate the feasibility of using embryo transfer in small community farmers by in vivo study and by modelling the results obtained. From the total of 59 donor cows, 62.7% responded to treatment, ... -
Isolation and genetic characterization of Toxoplasma gondii from striped dolphin (Stenella coeruleoalba) from Costa Rica
(American Society of Parasitologists, 2007)Toxoplasma gondii infection in marine mammals is of interest because of mortality and mode of transmission. It has been suggested that marine mammals become infected with T. gondii oocysts washed from land to the sea. We ... -
Isolation and identification of Arcobacter species from Costa Rican poultry production and retail sources
(Journal of food protection, 2017-04-03)Arcobacter is a gram-negative rod recognized as a potential food- and waterborne pathogen; nevertheless, little is known about the effects of this pathogen on human and animal health. Although Arcobacter species are commonly ... -
Isolation of toxoplasma gondii from the keel-billed toucan (Ramphastos sulfuratus) from Costa Rica
(American Society of Parasitologists, 2009-04-01)Pectoral muscles from a captive keel-billed toucan (Ramphastos sulfuratus) from Costa Rica were fed to a Toxoplasma gondii– free cat, and the cat shed oocysts. Laboratory mice fed these oocysts developed antibodies to T. ... -
Isolation, detection and characterization of swine hepatitis E virus from herds in Costa Rica
(Taylor & Francis, 2008-06)Although swine HEV isolates from North America, Europe, and Asia have been genetically characterized, little is known about the strains presumed to be circulating in Latin America. In this study, seven commercial swine ... -
Isolation, detection and characterization of swine hepatitis E virus from herds in Costa Rica
(Taylor & Francis, 2008)Although swine HEV isolates from North America, Europe, and Asia have been genetically characterized, little is known about the strains presumed to be circulating in Latin America. In this study, seven commercial swine ... -
Isolierung von Coronaviren in der Zellkultur aus Nasentupferproben atemwegskranker Kalber in der Bundesrepublik Deutschland
(Paul Parey Scientific Publishers, 1989)Isolation in tissue culture of coronavirus from respiratory diseased calves in the FRG Coronavirus was isolated in HRT-IS tissue culture from nasal swabs of 4 from 15 calves showing respiratory symptoms. The strains ... -
Índices bibliométricos y revistas de ‘corriente central’: implicaciones para el desarrollo de las ciencias naturales en Costa Rica
(Universidad de Costa Rica, 2015-05)Una característica asociada con el surgimiento de la ciencia moderna, en los siglos XVI y XVII, fue el establecimiento de una rica dinámica ‘socializadora’ del conocimiento mediante reuniones periódicas entre científicos, ... -
Leishmania spp. infection rate and feeding patterns of sand flies (Diptera: Psychodidae) from a hyperendemic cutaneous leishmaniasis community in Panamá
(American Society of Tropical Medicine and Hygiene, 2019)Abstract. American cutaneous leishmaniasis (ACL) is a common and important vector-borne parasitic zoonosis in Panam ´a. Here, we study Leishmania spp. infection rates and blood-feeding patterns among common sand flies in ... -
Leishmaniasis sand fly vector density reduction is less marked in destitute housing after insecticide thermal fogging
(BioMed Central, 2013)Background: Insecticide thermal fogging (ITF) is a tool to control vector borne diseases. Insecticide application success for vector control has been associated with housing materials and architecture. Vector abundance ... -
Leopardus wiedii Papillomavirus type 1, a novel papillomavirus species in the tree ocelot, suggests Felidae Lambdapapillomavirus polyphyletic origin and host-independent evolution
(University of Sassari, 2020-07-01)The limited knowledge on Papillomavirus diversity (particularly in wild animal species) influences the accuracy of PVs phylogeny and their evolutionary history, and hinders the comprehension of PVs pathogenicity, especially ... -
Leptospira seroprevalence detection and rabies virus absence in an urban raccoon (procyon lotor) population in a highly populated area, Costa Rica
(Mary Ann Liebert, Inc., 2019-11-27)Leptospirosis and rabies are zoonotic diseases of public health importance and endemic diseases in tropical countries such as Costa Rica. Peridomestic wild animals such as raccoons (Procyon lotor) have been implicated as ... -
Lesions in octocorals of the Costa Rican Caribbean during the 2015–2016 El Niño
(Springer Science and Business Media Deutschland GmbH, 2021-06-01)Emerging infectious diseases affecting marine ecosystems are increasing worldwide. Nevertheless, there are very few histopathological analyses describing the tissue damage associated with a specific disease. This makes it ... -
Leukoencephalitis and Vasculitis with Perivascular Demyelination in a Weimaraner Dog
(American College of Veterinary Pathologists, 2000)Aseptic and noninfectious diseases of the central nervous system are being recognized with increasing frequency. After multiple episodes of neurologic illness, this 7-year-old Weimaraner dog was eu- thanatized and ... -
Life cycle of Triatoma ryckmani (Hemiptera: Reduviidae) in the laboratory, feeding patterns in nature and experimental infection with Trypanosoma cruzi
(Instituto Oswaldo Cruz, 2010-02)A cohort initiated with 121 eggs, yielding 105 first instar nymphs (eclosion rate: 86.78%), allowed us to observe the entire life cycle of Triatoma ryckmani under laboratory conditions (24ºC and 62% relative humidity), ...