La bacteria Salmonella spp. es un importante agente etiológico de enfermedades transmitidas por alimentos (ETA) al hombre por contaminación de huevos, carne, leche y derivados cárnicos y lácticos. Así mismo, causa altas tasas de morbilidad y mortalidad en la crianza de la especie Cavia porcellus (cuyes). Su detección en alimentos y en centros de crianza de cuyes, previene brotes y permite implementar controles de vigilancia epidemiológica de la enfermedad. Los métodos fenotípicos de identificación son laboriosos, requieren tiempo y no todas las cepas aisladas pueden ser identificadas a nivel de serovariedades; contrariamente, la técnica de Reacción en Cadena de la polimerasa (PCR) es una metodología rápida, específica y muy sensible para detectar, identificar y caracterizar a las especies del género Salmonella. El propósito del presente estudio fue caracterizar al agente...

The study was conducted in the district of Tamburco (Abancay, Apurimac, Peru) with the aim of comparing interpretation criteria of California Mastitis Test (CMT) in the diagnosis of subclinical mastitis in cattle. Two hundred and nine cows from a population of 459 hand-milked cows belonging to 95 breeders were used. A total of 828 functional mammary quarters were evaluated and the main criteria for CMT interpretation were estimated. The prevalence of subclinical mastitis in cows was 72.3 and 65.6%, and in total mammary quarters was 48.7 and 42.3% with and without considering traces as positives respectively, and without statistical difference. The estimated prevalence in individual mammary quarters varied between 48.3 to 49.3% and depending of the mammary quarter between 40.0 to 45.5% with and without considering traces as positives respectively (p<0.05). More intense positive reactio...

The study was conducted in the district of Tamburco (Abancay, Apurimac, Peru) with the aim of comparing interpretation criteria of California Mastitis Test (CMT) in the diagnosis of subclinical mastitis in cattle. Two hundred and nine cows from a population of 459 hand-milked cows belonging to 95 breeders were used. A total of 828 functional mammary quarters were evaluated and the main criteria for CMT interpretation were estimated. The prevalence of subclinical mastitis in cows was 72.3 and 65.6%, and in total mammary quarters was 48.7 and 42.3% with and without considering traces as positives respectively, and without statistical difference. The estimated prevalence in individual mammary quarters varied between 48.3 to 49.3% and depending of the mammary quarter between 40.0 to 45.5% with and without considering traces as positives respectively (p<0.05). More intense positive reactio...