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ARS Home » Midwest Area » Ames, Iowa » National Laboratory for Agriculture and The Environment » Agroecosystems Management Research » Research » Publications at this Location » Publication #270412
Title: Transport of tylosin and tylosin-resistance genes in subsurface drainage water from manured fields

Author
item Moorman, Thomas
item SOUPIR, MICHELLE - Iowa State University
item GARDER, JASON - Iowa State University

Submitted to: ASA-CSSA-SSSA Annual Meeting Abstracts
Publication Type: Abstract Only
Publication Acceptance Date: 10/16/2011
Publication Date: 10/16/2011
Citation: Moorman, T.B., Soupir, M., Garder, J. 2011. Transport of tylosin and tylosin-resistance genes in subsurface drainage water from manured fields. American Society of Agronomy Annual Meetings [abstracts]. ASA-CSSA-SSSA Annual Meeting, Oct. 16-19, 2011, San Antonio, TX. CD-ROM.

Interpretive Summary:

Technical Abstract: Animal agriculture appears to contribute to the spread of antibiotic resistance genes, but few studies have quantified gene transport in agricultural fields. The transport of tylosin, tylosin-resistance genes (erm B, F, A) and tylosin-resistant Enterococcus were measured in tile drainage water from plots treated with manure from tylosin-treated swine. Enterococcus measured after fall manure application reached 700 cells/g soil, but tylosin-resistant Enterococcus accounted for less than 10% of the total soil population. Enterococcus soil populations declined over the winter. Tylosin-resistant bacteria were detected in tile drainage water only in the early spring and tylosin was sporadically detected in drainage water at concentrations below 1 ng/L. The abundance of erm genes was measured by qPCR and those results will be discussed.