Transfer of flubendazole and tylosin from feed at cross-contamination levels to various poultry matrices

V Vandenberge, E Delezie, P Delahaut, G Pierret, P De Backer, E Daeseleire, S Croubels

    Onderzoeksoutput: Bijdrage aan tijdschriftA1: Web of Science-artikel

    Uittreksel

    Residues of veterinary drugs and feed additives used extensively in animal husbandry are sometimes found in edible matrices. In this study, broilers received experimental feed, containing either flubendazole or tylosin, at cross-contamination levels of 2.5%, 5%, and 10% of the therapeutic dose to determine the transfer ratio of these molecules from feed to poultry matrices. Breast and thigh muscle and liver samples were collected during treatment and depletion periods and then analyzed using liquid chromatography-tandem mass spectrometry. The parent molecule flubendazole and its 2 major metabolites were quantified. After 3 to 5 d, a plateau phase was reached, and a few days after withdrawal of the experimental feed, a depletion of residues was noted. Significant difference between both muscle types was noted for flubendazole. Strong metabolization of flubendazole in the liver was seen. For tylosin, no residue concentrations above the limit of quantification could be detected in muscle. None of the residue concentrations for either molecule exceeded the corresponding maximum residue limits.
    TaalEngels
    TijdschriftPoultry science
    Volume91
    Exemplaarnummer9
    Pagina's (van-tot)2351-60
    Aantal pagina's10
    ISSN0032-5791
    DOI's
    StatusGepubliceerd - 2012

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