Abstract
Brazil is the largest exporter of poultry meat and poultry litter, a major solid waste, is commonly used as agricultural fertilizer. This residue may contain significant amounts of antibiotics which may cause an environmental impact little investigated until now. Currently enrofloxacin (ENR) and norfloxacin (NOR) are the main antibiotics used by farms, but ciprofloxacin (CIP) is very dete…