Multi-residue analytical method for detecting pesticides, veterinary drugs, and mycotoxins in feed using liquid- and gas chromatography coupled with mass spectrometry

·Modified QuEChERS with LC- and GC- MS/MS for multiresidue analysis of feed samples.·Matrix effects in feed analysis decreased via dilution and matrix-matched calibration.·Maximum extraction of veterinary drugs with 15 mL distilled H2O and 0.25 M EDTA.·Simultaneous analysis of pesticides, veterinary drugs, and mycotoxins.·Multiresidue analysis can be standardized for regulating feed safety.