Title: | Factores que afectan la susceptibilidad antibiótica de staphylococcus aureus aislado de mastitis bovina |
Authors: | Argudo Suin, Diego Efraín |
metadata.dc.contributor.advisor: | Serpa García, Victor Guillermo |
Keywords: | Mastitis Bovina Antibioticos Antibiograma Staphylococcus Aureus |
Issue Date: | 2017 |
metadata.dc.ucuenca.paginacion: | 83 páginas |
metadata.dc.description.city: | Cuenca |
Series/Report no.: | tv;300 |
metadata.dc.type: | bachelorThesis |
Abstract: | The main goal of this research project is to establish the relationship between different factors of the milking cow (lactation number and time) and the therapeutic and preventive management of Bovine Mastitis (use of mastitis and laboratory records in therapeutic decisions) on the antibiotic susceptibility of Staphylococcus aureus. For this purpose, 218 raw milk samples were analyzed from which 122 were isolated of S. aureus from 19 cattle herds in the provinces of Azuay and Cañar. In order to determine mastitis and antimicrobial susceptibility we conducted the California mastitis Test (CMT), microbiological culture, and antibiogram with plaque sensitivity discs. The antibiotics for which sensitivity was higher were streptomycin 90.98%, amoxicillin and clavulanic acid 87.70%, penicillin 76.23%, cloxacillin 75.41%, and kanamycin 71.31%. Conversely, the antibiotics with transcendental resistance were erythromycin 36.07%, tetracycline 34.43%, penicillin 23.77% and cephalexin 22.95%. An increased risk of bacterial resistance was observed when lactation time is prolonged. On the other hand, there is no relation of preventive and therapeutic management with the formation of antibiotic-resistant strains. |
Description: | El objetivo de la investigación es establecer: la relación entre diferentes factores de la vaca lechera (número y tiempo de lactancia); el manejo preventivo y terapéutico de la mastitis bovina (uso de registros de mastitis y laboratorio en decisiones terapéuticas); sobre la susceptibilidad antibiótica de Staphylococcus aureus. Se analizaron 218 muestras de leche de las cuales 122 fueron aislados de S. aureus en 19 hatos ganaderos de las provincias de Azuay y Cañar. Para determinar la mastitis y la susceptibilidad antimicrobiana se realizó: test de mastitis California (CMT), cultivo microbiológico, y antibiograma con discos de sensibilidad en placa. Los antibióticos para los cuales la sensibilidad fue mayor: estreptomicina 90,98%, amoxicilina más ácido clavulánico 87,70%, penicilina 76,23%, cloxacilina 75,41% y kanamicina 71,31%; mientras que los antibióticos con resistencia trascendental fueron: eritromicina 36,07%, tetraciclina 34,43%, penicilina 23,77% y cefalexina 22,95%. Se observó un mayor riesgo de resistencia bacteriana cuando el tiempo de lactancia es prolongada; por otro lado, no existe relación del manejo preventivo y terapéutico con la formación de cepas resistentes a antibióticos. |
metadata.dc.description.degree: | Médico Veterinario Zootecnista |
URI: | http://dspace.ucuenca.edu.ec/handle/123456789/28471 |
Appears in Collections: | Tesis de Pregrado
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