The aim of this study was to conduct a phenotypic and genetic characterization of 35 Salmonella Typhimurium isolates from guinea pig production systems in the Lima, Peru in relation to antimicrobial resistance. The profile of 11 antibiotics (florfenicol, sulfamethoxazole, doxycycline, oxytetracycline, amoxicillin, enrofloxacin, norfloxacin, levofloxacin, ciprofloxacin, colistin and fosfomycin), genotyping by ERIC-PCR techniques and quinolone resistance gene profile (qnrB, qnRD, qnRD, qnrD, qnrD , aa6), tetracyclines (tetA, tetB, tetC, tetD), phenols (cat1, cat2, cmlA, cmlB) and sulfamethoxazole (sul1, sul2). The results indicate the presence of multidrug resistance in 80% (n=28) of the strains, being the most common resistance to the antibiotic colistin (91.4%), followed by sulfamethoxazole (68.6%) and enrofloxacin (62.9%), and with a moderate resistance to amoxicillin (20%), ciprofloxac...

The aim of this study was to conduct a phenotypic and genetic characterization of 35 Salmonella Typhimurium isolates from guinea pig production systems in the Lima, Peru in relation to antimicrobial resistance. The profile of 11 antibiotics (florfenicol, sulfamethoxazole, doxycycline, oxytetracycline, amoxicillin, enrofloxacin, norfloxacin, levofloxacin, ciprofloxacin, colistin and fosfomycin), genotyping by ERIC-PCR techniques and quinolone resistance gene profile (qnrB, qnRD, qnRD, qnrD, qnrD , aa6), tetracyclines (tetA, tetB, tetC, tetD), phenols (cat1, cat2, cmlA, cmlB) and sulfamethoxazole (sul1, sul2). The results indicate the presence of multidrug resistance in 80% (n=28) of the strains, being the most common resistance to the antibiotic colistin (91.4%), followed by sulfamethoxazole (68.6%) and enrofloxacin (62.9%), and with a moderate resistance to amoxicillin (20%), ciprofloxac...

El objetivo del estudio fue evaluar la efectividad del fipronil al 1% y de la ivermectina al 1% en el tratamiento de sarna causada por Trixacarus caviae en cuyes infestados naturalmente, durante un periodo de 42 días. Para ello se seleccionaron 21 hembras reproductoras, dividiéndose al azar en tres grupos: (a) tratado con fipronil (vía epicutánea) 1,5 ml/kg. p.v., (b) tratado con ivermectina (vía subcutánea) 0,05 ml/kg. p.v. ambos con cuatro tratamientos a intervalos de 8 días, y (c) sin tratamiento. Cada 8 días se colectó escarificaciones cutáneas de cada animal para determinar el porcentaje de ácaros vivos y se tomaron biopsias de piel de un animal por grupo para la evaluación histopatológica. Al inicio del estudio los cuyes de los tres grupos presentaron 100% de ácaros vivos, observándose al día 42 post tratamiento, una disminución de ácaros vivos hasta 11,1% en el g...

El objetivo del estudio fue determinar la frecuencia de parásitos gastrointestinales presentes en cuyes reproductoras de crianza intensiva, así como el grado de infección parasitaria. Se recolectó 250 muestras de intestino delgado, intestino grueso y ciego, los cuales se colocaron en frascos de boca ancha, identificados y transportados a 4°C. Las muestras fueron procesadas por las siguientes técnicas parasitológicas: directo, flotación y sedimentación. La identificación específica de parásitos en muestras positivas se realizó mediante un examen microscópico a través de características morfológicas de los huevos. Además, se determinó el grado de parasitismo de las infecciones. Del total de muestras analizadas el 37,2 ± 6,0% (93/250) resultaron positivos a parásitos gastrointestinales en reproductoras. Los parásitos identificados fueron Paraspidodera uncinata (20,4%),...

Scholarly work that examines the production of ethnoracial categories has more closely examined the role of nation-states, social movements, and transnational trends. This focus has shifted attention away from the internal institutional processes that influence the production of ethnoracial categories. In particular, the role of the census-takers as key actors in these institutional processes has been underexamined. In this study, we draw from fifty-four semi-structured interviews with census-takers who participated in the 2017 Peruvian National Census to argue that census-takers can be considered street-level bureaucrats because of the influence they exercise in the production of ethnoracial categories. In a context where ethnoracial categories are contested, participants in our study drew from their own understandings of the ethnoracial question which ultimately –albeit inadvertently...

Scholarly work that examines the production of ethnoracial categories has more closely examined the role of nation-states, social movements, and transnational trends. This focus has shifted attention away from the internal institutional processes that influence the production of ethnoracial categories. In particular, the role of the census-takers as key actors in these institutional processes has been underexamined. In this study, we draw from fifty-four semi-structured interviews with census-takers who participated in the 2017 Peruvian National Census to argue that census-takers can be considered street-level bureaucrats because of the influence they exercise in the production of ethnoracial categories. In a context where ethnoracial categories are contested, participants in our study drew from their own understandings of the ethnoracial question which ultimately –albeit inadvertently...

Scholarly work that examines the production of ethnoracial categories has more closely examined the role of nation-states, social movements, and transnational trends. This focus has shifted attention away from the internal institutional processes that influence the production of ethnoracial categories. In particular, the role of the census-takers as key actors in these institutional processes has been underexamined. In this study, we draw from fifty-four semi-structured interviews with census-takers who participated in the 2017 Peruvian National Census to argue that census-takers can be considered street-level bureaucrats because of the influence they exercise in the production of ethnoracial categories. In a context where ethnoracial categories are contested, participants in our study drew from their own understandings of the ethnoracial question which ultimately –albeit inadvertently...

Los altos índices de mortalidad y problemas sanitarios por infecciones en cuyes son algunos de los principales obstáculos para una crianza eficiente y rentable. Por esta razón, el objetivo del presente estudio fue identificar los principales agentes bacterianos relacionados con mortalidad en cuyes y evaluar factores que puedan afectar su frecuencia. Mediante necropsias de cuyes hembras reproductoras muertas naturalmente en una granja de crianza intensiva, se tomaron muestras de órganos para el aislamiento e identificación de bacterias. Las muestras se dispusieron en cultivos microbiológicos en agares TSA y MacConkey, y su posterior resiembra en agares para bioquímica como Citrato, Kligler, LIA, SIM y Urea. Se analizaron un total de 171 cuyes reproductoras, de las cuales el 86.0% fueron positivas a la presencia de bacterias en órganos parenquimatosos. Entre las bacterias identific...