Browsing by Author "Panchi Rocha, Karolin Liseh"

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    Determinación de la prevalencia de escherichia coli en carne aviar de mercados de la provincia de Cotopaxi Ecuador
    (Universidad Técncica de Cotopaxi (UTC). Ciencias Agropecuarias y Recursos Naturales. Medicina Veterinaria, 2026-10-20) Panchi Rocha, Karolin Liseh; Silva Déley, Lucia Monserrath
    Poultry meat plays an important role in the daily diet due to its nutritional value, availability, and affordability. However, it can become contaminated during slaughter, transport, handling, or sale when proper hygiene and storage conditions are not maintained. Due to the limited information available in Cotopaxi regarding the microbiological quality of this food, the objective of this study was to determine the prevalence of Escherichia coli in samples of poultry meat sold in establishments throughout the province. A quantitative, observational, descriptive, and cross-sectional study was conducted. Using convenience sampling, 305 samples were collected from establishments located in 37 parishes across the seven cantons of Cotopaxi. These samples were analyzed using a microbiological procedure based on ISO Standard 16649-2 and adapted to the laboratory’s protocol, which enabled the identification of colonies consistent with Escherichia coli. The results were organized by type of establishment, parish, and canton of origin. Statistical tests of association were also applied, and a map of the sampling sites was created. Of the 305 samples analyzed, 212 were positive and 93 were negative, with an overall apparent prevalence of 69.51% (95% CI: 64.13–74.41%). Markets had the highest positivity rate, at 74.2%; however, no significant association was found between the type of establishment and the microbiological result (χ² = 0.461; p = 0.9274). In contrast, significant differences were observed among the cantons (χ² = 31.262; p < 0.001). Saquisilí recorded a 100% positivity rate (9/9), La Maná 96.8% (30/31), and Sigchos the lowest rate, at 30.0% (6/20). The findings show a high presence of colonies consistent with Escherichia coli in the poultry meat examined and differences in their distribution among the cantons. This information may help strengthen microbiological surveillance and improve hygiene, handling, and storage practices during marketing.