Chlortetracycline-resistant intestinal bacteria in organically raised and feral Swine |
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| Authors: | Stanton Thad B Humphrey Samuel B Stoffregen William C |
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| Affiliation: | Food Safety and Enteric Pathogens Research Unit, National Animal Disease Center, Agricultural Research Service, United States Department of Agriculture, Ames, IA 50010, USA. Thad.Stanton@ars.usda.gov |
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| Abstract: | Organically raised swine had high fecal populations of chlortetracycline (CTC)-resistant (growing at 64 μg CTC/ml) Escherichia coli, Megasphaera elsdenii, and anaerobic bacteria. By comparison, CTC-resistant bacteria in feral swine feces were over 1,000-fold fewer and exhibited lower taxonomic diversity. |
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