College of Life Sciences, Southwest Forestry University, Kunming 650224, China
| Abstract: | Objective: The aim of this study is to detect various drug resistance elements from chicken feces by PCR technology, so as to lay a foundation for the application of PCR technology in the survey of drug resistance of intestinal microbiota. Methods: Genomic DNA was extracted from chicken feces, and different drug resistance elements were amplified by conventional PCR. Results: In this study, different classes of the drug-resistant genes tetA, tetB, blaSHV, blaTEM, blaCTX-M1, qnrA, aadA1, dfrA1 and sul1 were observed from collected chicken feces, and the detection rates of different drug-resistant genes varied based on time point at which the genes were amplified. Wherein, tetB progressively increased with the prolongation of feeding time, while blaTEM and aadA1 decreased with the prolongation of feeding time. In addition, integrase genes intI1 and intI2 were also detected in this study. Among the types of plasmid replicons, IncB/O, IncFIC, IncFIA, IncFIB, IncI1, IncN and IncFrep were detected in this study, and the number of replicon types carried by different samples ranged from 1 to 6, and the detection rate of plasmid replicons also had a time point difference, while, obvious regularity was not observed. In terms of the correlations between plasmids, the detected plasmids presented varying degrees of correlations. Conclusion: PCR technology could detect different drug resistance elements in intestinal microbiota. |
| Keywords: | PCR Technology; Broiler; Fece Samples; Detection; Drug Resistant Elements |
| DOI: | 10.57237/j.jaf.2023.01.002 |
| 1. | 云南省教育厅科学研究基金项目 (2022J0505). |
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