Research on Drug Resistance of Bacteria in Beijing Youchi Chicken Farms
Poultry farming is being identified as a significant factor in the development and dissemination of antibiotic resistance.This study utilized Beijing Youchi Chicken Farm as a case study.Samples were collected from chickens at 40 days,120 days,200 days,and 400 days of age,including anal swabs,feces swabs,drinking nipple swabs,and feed trough swabs.A total of 204 samples were collected,consisting of five different types of samples:anal swab,fecal swab,drinking nipple swab,chute swab and bedding swab.Bacteria were isolated and identified from the collected samples.A total of 167 strains of E.coli were isolated and identified,with no other pathogenic bacteria found.The isolated strains showed resistance to varying levels of antibiotics tested,with resistance rates ranging from 7.78%to 62.87%.The isolated test strains exhibited the highest resistance to tetracyclines(specifically tetracycline)at a rate of 62.87%,while showing the highest sensitivity to quinolone(specifically ofloxacin)at a mediation rate of 2.40%.Utilizing SPSS binary logistic regression analysis,the study examined the fluctuations in resistant bacteria levels throughout the growth cycle of Beijing Youchi Chickens.The findings revealed that the test strains displayed the highest resistance to the antibiotics tested at 40 days of age.
万方数据
维普
