A study by the University of Illinois tracked the movement of the
antibiotic tetracycline resistant genes from wastewater lagoons to groundwater
at two pig farms.
Antibiotic resistant genes sometimes leak from waste lagoons into groundwater
as a result of routine use of antibiotics at swine
The US research team discovered
some genes found in pig waste lagoons are transferred from one bacterial species
to another, with such cross-species migration sometimes diluting and at other
times amplifying genes that result in antibiotic resistance.
researchers said their study is the first to take a broad sample of tetracycline
resistance genes in a landscape dominated by pig farming, as well as the first
to survey the genes directly, rather than focusing on the organisms that host
The findings are reported in the August issue of the journal
Applied and Environmental Microbiology.
â€¢ University of Illinois
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