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Mostrando ítems 61-80 de 144
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Estudio de modelación de manejos alternativos en sistemas de cría vacuna de la Depresión de Laprida
(Facultad de Ciencias Veterinarias, Universidad Nacional del Centro de la Provincia de Buenos Aires, 2018)El objetivo del presente trabajo fue explorar alternativas específicas de intensificación (aumento de la carga animal y fertilización nitrogenada de pasturas) de sistemas de cría de la zona de la Depresión de Laprida, ... -
Estudio retrospectivo de multirresistencia antimicrobiana en aislamientos de Escherichia coli de terneros con diarrea neonatal = Retrospective study of multiple antimicrobial resistance in Escherichia coli isolates from neonatal calves with diarrhea
(2015)Escherichia coli es una de las principales etiologías de la diarrea neonatal de los terneros y el tratamiento de esta enfermedad incluye el uso de antimicrobianos. Se realizó un estudio retrospectivo durante un período de ... -
Evaluación de parámetros energéticos-proteicos y productivos del Panicum maximum y P. coloratum, en diferentes estados de madurez y por efectos de defoliaciones periódicas. Su impacto sobre los sistemas de producción de carne bovina
(2015)La producción ganadera se desarrolla en Argentina y en el resto de América Latina y el Caribe, especialmente, en regiones adversas (clima y suelo) para producir forrajes de alta calidad, desplazada por la agricultura. ... -
Evaluation and comparison of serological methods for the detection of bovine neosporosis in Argentina = Evaluación y comparación de pruebas serológicas para la detección de la neosporosis bovina en Argentina
(Asociación Argentina de Microbiología, 2015-12)Neospora caninum is a protozoan parasite that causes abortion and important economic losses in cattle worldwide. The accurate diagnosis of neosporosis is essential for management and control measures. The aims of this study ... -
Expression of apoptosis-related genes at different stages of BoHV-1 and 5 infection of bovine neural tissue
(Elsevier, 2022-11)Bovine alphaherpesviruses (BoHV) 1 and 5 share many genetic and structural characteristics; however, they differ in their ability to cause encephalitis. Previous research suggests that this difference might be caused by a ... -
Expression profile of genes as indicators of developmental competence and quality of in vitro fertilization and somatic cell nuclear transfer bovine embryos
(Plos One, 2014-09)Reproductive biotechnologies such as in vitro fertilization (IVF) and somatic cell nuclear transfer (SCNT) enable improved reproductive efficiency of animals. However, the birth rate of in vitro-derived embryos still lags ... -
Fate of Neospora-seropositive animals: an opinion
(Sociedad Chilena de Parasitología, 2005-12)Neospora caninum is an abortive protozoon in cattle, which causes severe economic losses worldwide. Chronically infected cattle however develop immune responses protecting against further Neospora induced abortions. ... -
Feed bunk management effects steer performance and behaviour
(CSIRO, 2020-03-19)Animal performance and behaviour in fattening steers using ad libitum or restricted feed-bunk management were evaluated. High store-capacity self-feeders with weekly recharge were used in ad libitum management (ADLIB), ... -
Feeding value of whole raw soya beans as a protein supplement for beef cattle consuming low‐quality forages
(2018-02)Experiments (Exp) I and II were conducted to compare raw whole soya beans (WSB), roasted (rWSB) or other protein sources as supplements of low‐quality forages fed ad libitum to beef cattle, upon DM intake (DMI), ruminal ... -
Finalización de novillos Abeerden Angus con cereales forrajeros de invierno y con grano de cereal en bajas proporciones
(Instituto de Ciencia Animal, Cuba, 2011)La finalización de novillos pesados (> 450 kg cabeza-1) se realiza normalmente en corral, debido a las altas exigencias energéticas. Sin embargo, por los costos elevados de producción (CP) los ranchos o fincas medianos y ... -
Frequency of bovine viral diarrhea virus (BVDV) in Argentinean bovine herds and comparison of diagnostic tests for BVDV detection in bovine serum samples: a preliminary study
(Elsevier, 2020-11)Bovine viral diarrhea (BVD) is a major worldwide disease with negative economic impact on cattle production. Successful control programs of BVD require the identification and culling of persistently infected (PI) animals ... -
Frequency of Neospora caninum-specific antibodies in bulk milk from dairy farms from Mar y Sierras Dairy Basin, Argentina
(Elsevier, 2021-12)The aim of this study was to describe the prevalence of Neospora caninum based on the detection of specific antibodies in bulk tank milk (BTM) from dairy cattle farms in the Mar y Sierras Basin by using an enzyme-linked ... -
Genetic and management factors affecting beef quality in grazing Hereford steers
(Elsevier, 2012-12)Attributes contributing to differences in beef quality of 206 Hereford steers finished on pasture were assessed. Beef quality traits evaluated were: Warner–Bratzler meat tenderness and muscle and fat color at one and seven ... -
Genetic characterization of bovine herpesvirus 4 (BoHV-4) isolates from Argentine cattle suggests a complex evolutionary scenario
(Springer Nature, 2020-04)Bovine herpevsirus 4 (BoHV-4) is a gammaherpesvirus that has been associated with different clinical conditions in cattle. In Argentina, BoHV-4 was detected in diverse bovine samples. The aim of this study was to analyze ... -
Growth, carcass and meat quality traits in beef from Angus, Hereford and cross-breed grazing steers, and their association with SNPs in genes related to fat deposition metabolism
(2016)Grazing steers from Angus and Hereford breeds, their cross-breeds and a three-way cross-breed (Limousin × Angus–Hereford) were measured for growth, carcass andmeat quality traits. Breed effectswere studied, and the association ... -
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 ...