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Mostrando ítems 41-60 de 90
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Guía para el diagnóstico de pérdidas reproductivas en bovinos
(Ediciones INTA, 2023-12)Las pérdidas reproductivas son una de las principales limitantes que demuestran la ineficiencia de un sistema productivo. Generan un elevado costo al sistema con las consiguientes pérdidas económicas, ya sea porque es ... -
High rate of transplacental infection and transmission of Neospora caninum following experimental challenge of cattle at day 210 of gestation
(BMC, 2012-12)In order to investigate the pathogenesis of neosporosis following a primary infection in late pregnancy, cattle were subcutaneously challenged with 5 × 108 Neospora caninum (NC1 isolate) tachyzoites at day 210 of gestation ... -
Hipomagnesemia en vacas de cría en un campo de la zona del caldenal
(Facultad de Ciencias Veterinarias, Universidad Nacional de la Pampa, 2011)El objetivo de este trabajo fue estudiar los niveles de magnesio (Mg) sérico en un rodeo de cría de un establecimiento de la zona del caldenal pampeano, y las concentraciones en forrajes y agua de bebida de minerales ... -
Histopathological, Immunohistochemical, Lectinhistochemical and Molecular Findings in Spontaneous Bovine Abortions by Campylobacter fetus
(Wiley, 2011-04)Bovine campylobacteriosis (BC) is a venereal disease caused by Campylobacter fetus characterized by temporary infertility with mild endometritis, early embryonic death and occasional abortions. The objectives of this study ... -
Hypomagnesemia in beef cattle from the central region of Argentina: retrospective study
(Centro de Ciências Rurais, Universidade Federal de Santa Maria, 2021-08)Hypomagnesaemia (grass tetany) is a metabolic disorder of ruminants due to a reduced dietary intake of magnesium (primary deficiency), incorrect digestibility or associated metabolic factors reducing Mg intake (secondary ... -
Infectious sporadic bovine abortions: retrospective analysis
(Springer Nature, 2024-03-01)Infectious sporadic abortions in cattle are mainly caused by opportunistic bacteria and fungi usually present in environmental or gastrointestinal and reproductive microbiota of healthy animals. A retrospective analysis ... -
Inflammatory infiltration into placentas of Neospora caninum challenged cattle correlates with clinical outcome of pregnancy
(BMC, 2014-01)Infection with Neospora caninum stimulates host cell-mediated immune responses, which may be responsible for placental damage leading to bovine abortion. The aim of this study was to compare immune responses in the bovine ... -
Influence of corn silage supplementation before alfalfa grazing on ruminal environment in relation to the occurrence of frothy bloat in cattle
(Elsevier, 2007-07)Changes in the ruminal environment of cattle supplemented with corn silage (CS) before alfalfa grazing, in relation to the occurrence of frothy bloat, were evaluated. Six ruminally fistulated heifers were used in a crossover ... -
Interaction of bovine viral diarrhea virus with bovine cumulus–oocyte complex during IVM: Detection in permissive cells
(Elsevier, 2016-11)Structural changes in the zona pellucida (ZP) of bovine oocytes seem to modulate their interaction with various viral agents, facilitating the viral infection in in vitro production systems. To evaluate the susceptibility ... -
Involvement of toll-like receptors 3 and 7/8 in the neuropathogenesis of bovine herpesvirus types 1 and 5
(Elsevier, 2016-08)Bovine herpesvirus types 1 (BoHV-1) and 5 (BoHV-5) are closely related alpha-herpesviruses. BoHV-5 is the causal agent of non-suppurative meningoencephalitis in calves. BoHV-1 causes respiratory disease, abortions, genital ... -
Isolation of Neospora caninum from a beef cattle fetus from Argentina: Immunopathological and molecular studies.
(Elsevier, 2020-07)Neospora caninum is an important abortifacient agent affecting mainly cattle worldwide. The aim of the present work was to describe the histopathological findings in a naturally infected beef cow and its midterm fetus ... -
Ivermectin antiviral activity against Varicellovirus bovinealpha 1: assessment of intracellular drug accumulation in virus‑infected cells
(Springer, 2024-01)Varicellovirus bovinealpha 1 (formerly bovine alphaherpesvirus type 1, BoAHV-1) is associated with several syndromes in cattle, including respiratory disease and is one of the main agents involved in the bovine respiratory ... -
Lectin binding patterns and immunohistochemical antigen detection in placenta and lungs of Brucella abortus-bovine infected fetuses
(2018)Lectin binding relies on the affinity of these substances for specific terminal sugars. The method facilitates the identification of complex structures to which the terminal sugar attaches and may reveal physiological or ... -
Linoleic acid stimulates neutral lipid accumulation in lipid droplets of maturing bovine oocytes
(Elsevier, 2013-03-01)Linoleic acid (LA) is a polyunsaturated fatty acid present in high concentrations in bovine follicular fluid; when added to maturation culture media, it affects oocyte competence (depending on the type and concentration ... -
Methodological performance of selenium determination in ruminal fluid by hydride generation atomic absorption spectroscopy
(Ediciones INTA, 2021-04)Selenium (Se) is a trace element used by multiple enzymes. In ruminants, Se present in food is released to ruminal fluid allowing its absorption in the small intestine. Se release may be analysed by hydride generation ... -
Modelación productiva, económica y de gases de efecto invernadero de sistemas de cría bovina de la Pampa Deprimida
(Facultad de Ciencias Veterinarias, Universidad Nacional del Centro de la Provincia de Buenos Aires, 2019)El objetivo del presente trabajo fue evaluar indicadores productivos, económicos y de gases de efecto invernadero (GEI) en sistemas típicos de cría vacuna de la Pampa Deprimida (integrada por dos zonas, Cuenca del Salado ... -
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 ... -
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 ... -
Modulation of granzymes mRNA expression in neural tissue of BoAHV-1 and BoAHV-5-infected cattle
(Elsevier, 2023-06)Bovine alphaherpesviruses (BoAHV)-1 and 5 are neurotropic viruses of cattle which differ in their neuropathogenic potential. BoAHV-5 is responsible for non-suppurative meningoencephalitis in calves while BoAHV-1 can ... -
Molecular Characterization of the First Bovine Herpesvirus 4 (BoHV-4) Strains Isolated from In Vitro Bovine Embryos production in Argentina
(Plos One, 2015-07-15)Bovine herpesvirus 4 (BoHV-4) is increasingly considered as responsible for various problems of the reproductive tract. The virus infects mainly blood mononuclear cells and displays specific tropism for vascular endothelia, ...