Abstract
The aim of this work was to evaluate the incidence of potential ochratoxigenic mycoflora and ochratoxin A (OA) in poultry, pig and rabbit feeds. Eighty poultry, pig and rabbit feed samples were taken at random from factories located from Córdoba province, Argentina, over a period of 8 months. Isolation and quantitative enumeration of fungal propagules were done on DRBC and DG18 media. The predominant species were A. candidus, A. flavus, A. terreus, A. parasiticus, P. implicatum, P. minioluteum, P. crustosum and P. citrionigrum. The distribution of section Nigri species varied according to the feedstuffs analysed. The frequency of A. niger var. niger was noticeably high in poultry feed samples on DRBC medium. The Nigri section species was present at moderate mean colony counts (CFU/g) from three feeds. Mycotoxin analysis of these samples showed that OA was detected in 15%, 10% and 12% of pig, poultry and rabbit feed samples, respectively. The mean levels detected ranged between 15 and 25 ng/g from three feeds. The presence of ochratoxigenic species of Nigri section and OA in feeds indicates the risk of potential exposure of poultry, pigs and rabbits through the ingestion of feeds.
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