Author: Zhou, X.; Qiao, M.; Wang, F.-H.; Zhu, Y.-G.
Description: The application of manure-based commercial organic fertilizers (COFs) is becoming increasingly extensive because of the expanding market for organic food. The present study examined the effects of repeated applications of chicken or swine manure-based COFs on the fate of antibiotics and antibiotic resistance genes (ARGs) in soil by conducting a soil microcosm experiment. Application of COFs significantly increased antibiotics residues, as well as the relative abundance of ARGs and the integrase gene of class 1 integrons (intIota1) in soil. Two months after each application, antibiotics and ARGs dissipated in amended soils, but they still remained at an elevated level, compared with the control. And, the accumulation of antibiotics was found due to repeated COF applications. However, the relative abundance of ARGs in most COF-amended soils did not differ significantly between the first application and the repeated application. The results imply that 2 months are not sufficient for ARGs to approach background levels, and that animal manure must be treated more effectively prior to using it in agriculture ecosystems.
Subject headings: Animals; Anti-Bacterial Agents/analysis; Chickens; Drug Resistance, Microbial/genetics; Fertilizers; Genes, Bacterial; Integrons; Manure; Soil Microbiology; Soil Pollutants/analysis; Swine; Antibiotic resistance genes; Antibiotics; Commercial organic fertilizers; Repeated applications; Soil
Publication year: 2017
Journal or book title: Environmental Science and Pollution Research International
Volume: 24
Issue: 1
Pages: 701-710
Find the full text :Â https://link.springer.com/article/10.1007/s11356-016-7854-z
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Type: Journal Article
Serial number: 1803