Aspergillus NOR~1 gene expression & aflatoxigenecity in compound feeds

Aflatoxins (AFs) are naturally occurring secondary metabolites produced principally by Aspergillus flavus and Aspergillus parasiticus in food and feed commodities worldwide. Contaminations of compound feeds by AFs do not only affect animal health, but the economy as well. It is for this purpose that a study was carried out to establish the quality of South African feeds with respect to AF-producing fungi, establish a correlation between levels of AFs and determinant gene (nor-1) responsible for producing these toxins.