MYCOBIOTA AND MYCOTOXINS CONTAMINATION IN RAW MATERIALS AND FINISHED FEED INTENDED FOR FATTENING PIGS PRODUCTION IN EASTERN ARGENTINA.

PEREYRA C. ; CAVAGLIERI L.; CHIACCHIERA S. ; DALCERO A.

VETERINARY RESEARCH COMMUNICATIONS

SPRINGER

Lugar: Amsterdam; Año: 2011 vol. 35 p. 367 - 379

0165-7380

The aim of this work was to determine mycobiota and zearalenone, fumonisin B1, aflatoxin B1 and ochratoxin A contamination present in raw materials and finished feed intended for fattening pigs. Samples were examined for total fungi and genera distribution. Zearalenone, fumonisin B1, aflatoxin B1 and ochratoxin A contamination were determined using high pressure liquid chromatography and thin layer chromatography. Milled maize and finished feed samples showed high fungal contamination. All samples contained at least one of the main mycotoxigenic genera Aspergillus, Fusarium and Penicillium spp. Aspergillus flavus and F. verticillioides were the most prevalent species. All samples were positive for FB1. All sucking pig, piglet, growing and boar feed samples showed natural contamination with zearalenone. Aflatoxin B1 and ochratoxin A contamination were not detected. There was a 100% correlation between fumonisin B1 and zearalenone contamination in sucking pig, piglet, growing and boar feed samples. Fifty percent of piglet samples and 67% of suckling pig samples showed zearalenone levels over the recommended limits. The presence of mycotoxins indicates the existence of contamination. This fact requires periodic monitoring to prevent the occurrence of mycotoxicosis in fattening pigs’ production.