Fachbereich Veterinärmedizin



    Exposure of livestock to GM feeds: Detectability and measurement (2017)

    Zeitschriftenartikel / wissenschaftlicher Beitrag
    Nadal, Anna
    De Giacomo, Marzia
    Einspanier, Ralf (WE 3)
    Kleter, Gijs
    Kok, Esther
    McFarland, Sarah
    Onori, Roberta
    Paris, Alain
    Toldorà, Mònica
    van Dijk, Jeroen
    Wal, Jean-Michel
    Pla, Maria
    Food and chemical toxicology — S. 1–23
    ISSN: 0278-6915
    DOI: 10.1016/j.fct.2017.08.032
    Pubmed: 28847764
    Institut für Veterinär-Biochemie

    Oertzenweg 19 b
    14163 Berlin
    Tel.+49 30 838 62225 Fax.+49 30 838-62584

    Abstract / Zusammenfassung

    This review explores the possibilities to determine livestock consumption of genetically modified (GM) feeds/ingredients including detection of genetically modified organism (GMO)-related DNA or proteins in animal samples, and the documentary system that is in place for GM feeds under EU legislation. The presence and level of GMO-related DNA and proteins can generally be readily measured in feeds, using established analytical methods such as polymerase chain reaction and immuno-assays, respectively. Various technical challenges remain, such as the simultaneous detection of multiple GMOs and the identification of unauthorized GMOs for which incomplete data on the inserted DNA may exist. Given that transfer of specific GMO-related DNA or protein from consumed feed to the animal had seldom been observed, this cannot serve as an indicator of the individual animal's prior exposure to GM feeds. To explore whether common practices, information exchange and the specific GM feed traceability system in the EU would allow to record GM feed consumption, the dairy chain in Catalonia, where GM maize is widely grown, was taken as an example. It was thus found that this system would neither enable determination of an animal's consumption of specific GM crops, nor would it allow for quantitation of the exposure.