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Mostrando ítems 379-398 de 439
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Spray-drying process preserves the protective capacity of a breast milk-derived Bifidobacterium lactis strain on acute and chronic colitis in mice
(2017-02)Gut microbiota dysbiosis plays a central role in the development and perpetuation of chronic inflammation in inflammatory bowel disease (IBD) and therefore is key target for interventions with high quality and functional ... -
Staphylococcus aureus chronic intramammary infection modifies protein expression of transforming growth factor beta (TGF-β) subfamily components during active involution
(2014-02)The objectives of this study were to determine whether Staphylococcus aureus chronic intramammary infection (IMI) influences protein expression of TGF-β subfamily components and collagen I and to examine the histomorphometric ... -
Stochastic modelling to predict a priori the potential outcomes of different control schemes against the cattle tick Rhipicephalus microplus
(Elsevier, 2024-02)Stochastic models are valuable tools to describe and analyze tick population dynamic in a given area, and to evaluate different control schemes. The objective of this study was to provide a tool to predict a priori how a ... -
Strategic applications of long-acting acaricides against Rhipicephalus (Boophilus) microplus in northwestern Argentina, with an analysis of tick distribution among cattle
(2015-03)Strategic applications of long-acting acaricides for the control of Rhipicephalus (Boophilus) microplus in northwestern Argentina were evaluated for one year. In addition, tick distribution among cattle was analyzed to ... -
Strategic treatments with systemic biocides to control Rhipicephalus (Boophilus) microplus (Acari: Ixodidae) in northwestern Argentina = Tratamientos estratégicos con biocidas sistémicos para el control de Rhipicephalus (Boophilus) microplus (Acari: Ixodidae) en el noroeste de Argentina
(Facultad de Ciencias Veterinarias, Universidad de Buenos Aires, 2014)This work was performed to evaluate two different schemes of treatment with systemic biocides to control Rhipicephalus microplus in northwestern Argentina. Treatments were applied from late winter to late spring to act on ... -
Strategies to double milk production per farm in Argentina: Investment, economics and risk analysis
(Elsevier, 2022-03)Context: Demand for dairy products is expected to continue driving intensification in dairy systems. Little is known about the productive and economic performance and risk of intensification strategies either within grazing ... -
Study of the effects of spray drying in whey‐starch on the probiotic capacity of Lactobacillus rhamnosus 64 in the gut of mice
(2017-10)Aims: To evaluate the effects of spray drying of Lactobacillus rhamnosus 64 on its capacity to modulate the gut immune response and on the attenuation of TNBS‐induced colitis in mice. Methods and Results: Lactobacillus ... -
Study of the effects of spray‐drying on the functionality of probiotic lactobacilli
(2013-05)Three probiotic lactobacilli strains were spray‐dried in 20% (w/v) skim milk and submitted to a simulated gastrointestinal digestion. Fresh or spray‐dried cultures were administered to mice for 5 and 10 days, and Immunoglobulin ... -
Study of the life cycle of Amblyomma dubitatum (Acari: Ixodidae) based on field and laboratory data
(2014-05)The life cycle of Amblyomma dubitatum was described based on the seasonal distribution of all parasitic stages and the development periods of engorged ticks under different conditions of photoperiod and temperature. All ... -
Sublethal exposure to imidacloprid in commercial Apis mellifera colonies in early spring: performance of honey bees and insecticide transference between in-hive products
(Springer, 2023-04)Honey bees have an important role in ecosystems as pollinators. However, in recent years, bee populations have declined, with habitat destruction, pesticide use, and climate change contributing to the decline. One of the ... -
Successive treatments with ivermectin (3.15%) to control the tick Rhipicephalus (Boophilus) microplus in cattle: Pharmacokinetic and efficacy assessment
(Elsevier, 2022-01)This study aimed to evaluate the pharmacokinetics, the potential accumulation in the body of treated animals and the efficacy of ivermectin long-acting formulation (3.15%) against the cattle tick Rhipicephalus (Boophilus) ... -
Survey of potential factors involved in the low frequency of CP5 and CP8 expression in Staphylococcus aureus isolates from mastitis of dairy cattle from Argentina, Chile, and Uruguay
(2018-08)Staphylococcus aureus produces capsular polysaccharides (CPs) both in vivo and under defined culture conditions being serotypes 5 and 8 the most prevalent. S. aureus isolates that fail to produce CP5 or CP8 are defined as ... -
Susceptibilidad a antibióticos de Staphylococcus aureus aislados de mastitis bovina en lecherías de la cuenca central de Argentina
(2016-09)La mastitis bovina causa cuantiosas pérdidas económicas al productor lechero y la industria láctea a nivel mundial. Staphylococcus aureus es uno de los principales patógenos mayores causantes de infecciones intramamarias, ... -
Synonymy of Ixodes aragaoi with Ixodes fuscipes, and reinstatement of Ixodes spinosus (Acari: Ixodidae)
(Elsevier, 2020-03)Ixodes fuscipes Koch, 1844, described from Brazil, has been considered a valid species with records from Brazil and Peru. Ixodes spinosus Neumann, 1899, also described from Brazil, has been considered a synonym of I. ... -
Tamberos de la cuenca lechera santafesina. ¿Producir asociado o mano de obra?
(2017)El proceso de modernización del agro de las dos últimas décadas, incide directamente en un sujeto social de la cuenca lechera santafesina. 1990 genera nueva legislación que enmarca el trabajo y la vida del tambero y su ... -
Taxonomic key to nymphs of the genus Amblyomma (Acari: Ixodidae) in Argentina, with description and redescription of the nymphal stage of four Amblyomma species
(2014-10)In the present study, we provide morphological descriptions of the nymph of Amblyomma parvitarsum, A. tonelliae, and redescriptions of A. argentinae and A. sculptum. A taxonomic key, with relevant morphological characters ... -
The taxonomic status of Rhipicephalus sanguineus (Latreille, 1806)
(2015-02)The brown dog tick, Rhipicephalus sanguineus sensu stricto, is a species with considerable public health and economic importance. However, the taxonomic status of this species is far from resolved. After more than 110 years ... -
Technological variables influencing the growth and stability of a silage inoculant based on spray‐dried lactic acid bacteria
(Wiley, 2020-06)Aims: To investigate the influence of different culture media and fermentation conditions on growth performance and viability of three lactic acid bacteria (LAB) strains with potential as silage inoculants, and to optimize ... -
The allocation of assimilated carbon to shoot growth: in situ assessment in natural grasslands reveals nitrogen effects and interspecific differences
(2014-04)In grasslands, sustained nitrogen loading would increase the proportion of assimilated carbon allocated to shoot growth (A shoot), because it would decrease allocation to roots and also encourage the contribution of species ... -
The Amblyomma maculatum Koch, 1844 (Acari: Ixodidae) group of ticks: phenotypic plasticity or incipient speciation?
(BMC, 2018-12)Background; The goal of this study was to reassess the taxonomic status of A. maculatum, A. triste and A. tigrinum by phylogenetic analysis of five molecular markers [four mitochondrial: 12S rDNA, 16S rDNA, the control ...