Antimicrobial resistant gene prevalence in soils due to animal manure deposition and long-term pasture management

  04 November 2020

The persistence of antimicrobial resistant (AMR) genes in the soil-environment is a concern, yet practices that mitigate AMR are poorly understood, especially in grasslands. Animal manures are widely deposited on grasslands, which are the largest agricultural land-use in the United States. These nutrient-rich manures may contain AMR genes. The aim of this study was to enumerate AMR genes in grassland soils following 14-years of poultry litter and cattle manure deposition and evaluate if best
management practices (rotationally grazed with a riparian (RBR) area and a fenced riparian buffer strip (RBS), which excluded cattle grazing and poultry litter applications) relative to standard pasture management (continuously grazed (CG) and hayed (H)) minimize the presence and amount of AMR genes.

Further reading: PeerJ
Author(s): Yichao Yang, Amanda J. Ashworth, Jennifer M. DeBruyn, Lisa M. Durso, Mary Savin, Kim Cook, Philip A. Moore and Phillip R. Owens
Clean Environment  
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