Mould and mycotoxin contamination of pig and poultry feed
2005
Markovic, R.V. | Jovanovic, N.D. | Sefer, D.S. | Sinovec, Z.J. (Faculty of Veterinary Medicine, Belgrade (Serbia and Montenegro))
During ten-year period (1995-2004) a total of 756 analyses of pig and poultry feed was performed. Standard methods were used for microbiological determination. Qualitative and quantitative analyze of mycotoxins was performed by TLC technique. Feed for yound categories contained from 100 to 3,400,000 CFU/g of feed. In 35.71% of all samples the detected amount was above acceptable levels. Feed for adult categories contained from 800 to 8,000,000 CFU/g of feed. In only 7.54% of samples this amount was over the tolerable level. Species determination revealed great heterogeneity, with the most common findings of Penicillium spp. (28.38%), Aspergillus spp. (26.37%), Mucor spp. (24.67%), Fusarium spp. (11.33%) and Rhizopus spp. (9.22%). The amount and type of mycotoxin varied depending on the feed category as well as on year of detection, implicating a strong influence of climatic factors and average humidity of the specified year. In a total of 320 analyzed feeds for pigs and poultry the characteristic finding was a combined contamination with two or three mycotoxins. In 161 samples of feed for young animals the presence of AFBl, F-2 and OTA was detected in 36, 161 and 161 samples, respectively, while in 33.83 and 71 samples the detected amounts were above tolerable levels. In 159 samples of feed for adult animals the presence of AFB1, F-2 and OTA was detected in 32, 159 and 159 samples, respectively, while in 31, 65 and 99 samples the detected amounts were above tolerable levels.
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