Co-occurrence of mycotoxins in swine feed produced in Portugal
Inês Almeida1, Hermínia Marina Martins, Sara Santos
1Direcção Geral de Veterinária, Largo da Academia Nacional de Bela Artes, no. 2, Lisbon, Portugal.
Abstract:
A total of 404 samples of commercial swine feed from Portugal feed mills were analysed by HPLC methods for the presence of mycotoxins: 277 samples of feed for fattening pigs were analysed for ochratoxin A (OTA), zearalenone (ZEA), and deoxynivalenol (DON), and 127 samples of feed for sows were analysed for ZEA and fumonisins (FB1 + FB2). Concerning feed for fattening pigs, 21 (7.6%) samples were positive for OTA, (2-6.8 μg/kg), 69 (24.9%) were positive for ZEA (5-73 μg/kg), and 47 (16.9%) were positive for DON (100-864 μg/kg). In feed for sows, the results showed 29.9% of positive samples for ZEA (5-57.7 μg/kg) and 8.7% positive samples for FB1 and FB2 (50-391.4 μg/kg). Co-occurrence of DON/ZEA was found most frequently, but simultaneous contamination with OTA/ZEA and OTA/DON was also found.
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