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Mostrando ítems 61-80 de 93
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Inseminación a tiempo fijo: factores que afectan la tasa de concepción en rodeos lecheros
(Ediciones INTA, 2019-04)Los artículos que se presentan a continuación fueron recopilados en capítulos de manera tal que, permitan al lector seguir un hilo conductor que se inicia al momento de la inserción de los dispositivos y finaliza varios ... -
Intramammary infusion of Panax ginseng extract in bovine mammary gland at cessation of milking induces changes in the expression of toll-like receptors, MyD88 and NF-kB during early involution
(2015-06)The purposes of this study were to explore TLR2 and TLR4 participation and MyD88 and NF-κB activation in bovine mammary glands (BMG) treated with Panax ginseng (PG) at involution and verify the effect of PG in the cytokine ... -
Intramammary infusion of Panax ginseng extract in the bovine mammary gland at cessation of milking modifies components of the insulin-like growth factor system during involution
(2013-06)The objective of this study was to evaluate the effects of a single intramammary infusion of Panax ginseng extract (GS) on insulin-like growth factors (IGF) in bovine mammary gland during early involution. Eight mammary ... -
Involvement of matrix metalloproteinases and their inhibitors in Staphylococcus aureus chronically infected bovine mammary glands during active involution
(Elsevier, 2021-04)The aim of this study was to characterize the protein expression of matrix metalloproteinase-2 (MMP-2) and ‐− 9 and their inhibitors (TIMP-1 and -2) in mammary tissue of dairy cows with naturally occurring chronic S. aureus ... -
Liposomal and CpG-ODN formulation elicits strong humoral immune responses to recombinant Staphylococcus aureus antigens in heifer calves
(Elsevier, 2019-05-01)Bovine mastitis caused by Staphylococcus aureus is a serious problem in dairy production and effective immunoprophylaxis is an unmet goal so far. The objective of this work was to assess the humoral immune response of ... -
Low Genetic Diversity of the Only Clade of the Tick Rhipicephalus microplus in the Neotropics
(MDPI, 2023-11)This study addresses the variability of the mitochondrial cytochrome oxidase subunit I (COI) and 16S rDNA (16S), and nuclear internal transcriber spacer ITS2 (ITS2) genes in a set of field-collected samples of the cattle ... -
Management strategies to minimize the use of synthetic chemical acaricides in the control of the cattle tick Rhipicephalus (Boophilus) microplus (Canestrini, 1888) in an area highly favourable for its development in Argentina
(Wiley, 2020-02)The aim of this work was to test the efficacy of winter-spring control strategies against Rhipicephalus (Boophilus) microplus (Canestrini, 1888) (Ixodida: Ixodidae) in an area highly favourable for its development in ... -
Migration of Rhipicephalus microplus ticks among cattle
(Royal Entomology Society, 2022-11)The aim of this work was to quantitatively analyse the magnitude of the migration of Rhipicephalus microplus ticks among cattle under field conditions, in groups of bovines with different stocking rates. The role of this ... -
Nellore cattle (Bos indicus) and ticks within the Brazilian Pantanal: ecological relationships
(2016-02)Pantanal is a huge floodplain mostly in Brazil, and its main economic activity is extensive cattle raising, in farms characterized by an extremely wildlife-rich environment. We herein describe tick infestations of cattle ... -
Neospora caninum truncated recombinant proteins formulated with liposomes and CpG-ODNs triggered a humoral immune response in cattle after immunisation and challenge
(Elsevier, 2021-06)Abortions caused by Neospora caninum are a serious problem in cattle production and require effective immunoprophylaxis. The objective of this work was to assess the humoral immune response to four recombinant (r) N. caninum ... -
Neosporosis bovina en Argentina: a 25 años del primer reporte en el país
(Facultad de Ciencias Veterinarias, Universidad Nacional de La Plata, 2021)La neosporosis es una enfermedad de gran impacto en el ganado vacuno debido a que causa abortos en el segundo y último trimestre de la gestación. En esta revisión se resume y discute la información sobre la misma, recopilada ... -
Non-parasitic life cycle of the cattle tick Rhipicephalus (Boophilus) microplus in Panicum maximum pastures in northern Argentina
(2017)The aim of this work was to study the non-parasitic phase of the Rhipicephalus microplus life cycle in Panicum maximum grasses from northern Argentina, in order to provide ecological information for designing methods of ... -
Nuevas estrategias para mejorar la eficiencia del semen sexado en producción in vitro de embriones bovinos
(Facultad de Ciencias Veterinarias, Universidad Nacional del Litoral, 2017)El objetivo de esta tesis fue el de optimizar el uso de semen sexado en embriones bovinos producidos in vitro (PIVE). Para ello se realizaron tres estudios con el fin de evaluar: diferentes medios de fecundación in vitro ... -
Pérdidas de preñez en un rodeo de cría del norte de la provincia de Santa Fe = Pregnancy losses in a beef cattle herd in northern Santa Fe
(Asociación Argentina de Producción Animal, 2013-12)Se evaluó durante tres años consecutivos las pérdidas por abortos en un rodeo de cría bovino, libre de brucelosis y tuberculosis, con control de enfermedades venéreas y aplicación de vacunas contra enfermedades reproductivas. ... -
Preparation and characterization of a Staphylococcus aureus capsular polysaccharide-protein conjugate prepared by a low cost technique: a proof-of-concept study
(2015-01)Staphylococcus aureus is a worldwide distributed pathogen that produces several diseases in many species and is the major cause of mastitis in dairy cows. S. aureus capsular polysaccharide 5 (CP5) has been widely proposed ... -
Prevalencia de bacterias patógenas de mastitis bovina en leche de tanque de frío y evaluación de medios de cultivos para el recuento y la identificación de Staphylococcus aureus
(2014)El objetivo del presente estudio fue estimar la prevalencia de bacterias patógenas de mastitis en muestras de leche de tanque en tambos ubicados en la cuenca lechera central Argentina. Además, se evaluó el desempeño de ... -
Producción y evaluación de antígenos recombinantes para el diagnóstico serológico y la generación de vacunas para el control de la anaplasmosis bovina
(Facultad de Ciencias Veterinarias, Universidad Nacional del Litoral, 2020)La anaplasmosis bovina, causada por Anaplasma marginale (rickettsia intraeritrocítica transmitida por artrópodos hematófagos), es una enfermedad infecciosa de gran interés por las severas pérdidas económicas que ocasiona. ... -
Producción y evaluación de antígenos recombinantes para el diagnóstico serológico y la generación de vacunas para el control de la anaplasmosis bovina
(Facultad de Ciencias Veterinarias, Universidad Nacional del Litoral, 2020)En este trabajo se abordó la anaplasmosis de forma integral, desde el diagnóstico y la prevención. La evaluación serológica de la enfermedad se realiza por ELISA de competición (ELISAc), utilizando como antígeno a la ... -
Proliferation-apoptosis balance in Staphylococcus aureus chronically infected bovine mammary glands during involution
(2017-05)The objective of this study was to determine whether Staphylococcus aureus chronic intramammary infection (IMI) influences expression of proteins related to regulation of proliferation and apoptosis processes and ... -
Quantitative risk assessment of FMDV introduction in a FMD free country through bone-in beef and offal importation from a FMD free with vaccination country/zone
(Elsevier, 2023-09)Quantitative risk assessment was used to estimate the risk of introducing foot-and-mouth disease (FMD) through bone-in beef from Argentina (FMD-free with vaccination status) into other FMD-free countries. A stochastic model ...