Biodegradability of Metronidazole, Olaquindox, and Tylosin and Formation of Tylosin Degradation Products in Aeroboc Soil-Manure Slurries

摘要

The use of veterinary drugs(primarily antibiotics)in animal husbandry harbors the risk that these compounds end up in the farmland when manure is used as fertilizer. The biodegradability of three compounds, olaquindox(OLA), metronidazole(MET), and tylosin(TYL), was simulated in soil-manure slurries with 50 g of soil per liter. Supplemental batch sorption tests revealed that insignificant amounts of OLA and MET were located in the soil phase, whereas in the liquid phase.