Citas bibligráficas
Su, R., (2026). Presencia de cepas de Escherichia coli productoras de betalactamasas de espectro extendido (BLEE) y resistentes a colistina en granjas de gallinas ponedoras de la provincia de Chincha [Universidad Peruana Cayetano Heredia]. https://hdl.handle.net/20.500.12866/16052
Su, R., Presencia de cepas de Escherichia coli productoras de betalactamasas de espectro extendido (BLEE) y resistentes a colistina en granjas de gallinas ponedoras de la provincia de Chincha []. PE: Universidad Peruana Cayetano Heredia; 2026. https://hdl.handle.net/20.500.12866/16052
@misc{renati/911467,
title = "Presencia de cepas de Escherichia coli productoras de betalactamasas de espectro extendido (BLEE) y resistentes a colistina en granjas de gallinas ponedoras de la provincia de Chincha",
author = "Su Tello, Roberto Shen",
publisher = "Universidad Peruana Cayetano Heredia",
year = "2026"
}
Egg production is an important source of protein in the human diet. For this reason, health management is important, and within this the administration of drugs in adequate doses, in order to reduce the risk of increasing antimicrobial resistance (AMR), which is seen and combated from the approach of “One Health”, since treatments are increasingly less effective and scarcer, reflected in illnesses and economic losses. The objective of this work was to evaluate resistance to colistin and beta-lactam antibiotics in Escherichia coli strains isolated from fecal samples of laying hens. There were a total of 162 E. coli strains previously isolated, of which 74 (45.7%) came from Mac Conkey agar with colistin supplementation and 88 (54.3%) strains from Mac Conkey agar with cefotaxime supplementation. All strains were analyzed by the combined disk (CDT) method to determine extended-spectrum beta-lactamase (ESBL)-producing E. coli strains and colistin elution to determine colistin-resistant strains. A total of 109/162 (67.3%) ESBL-positive strains were determined and 55/162 (34%) were resistant to colistin. Likewise, it was determined that 20/162 (12.3%) strains had resistance to both antibiotics. These results were analyzed using descriptive statistics in Microsoft Excel, showing that there is a high resistance to these two groups of drugs. According to what has been shown, it would be recommended to carry out active surveillance, since there is a high percentage of positive ESBL and they also present resistance to colistin, although this was prohibited in 2019 in Peru, and bacteria with resistance to it continue to circulate, becoming a public health problem because colistin is used in treatments against ESBL-positive bacteria in humans.
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