Abstract
Effects of high and low dose of ochratoxin A (OTA) as pure toxin supplemented to feed were investigated on the performance of growing chicken. Two groups were fed with different doses of chemical pure OTA 0.5 ppm and 5 ppm in feed and the effects of toxin on body and organ weights were studied and compared with control group. No effects were observed by feeding 0.5 ppm OTA, whereas 5 ppm had a negative effect on the daily body mass gain. OTA in feed had a negative effect on the daily body mass gain. In contrary nephrotoxic effects could be observed by feeding the naturally OTA contaminated feed with only 0.2 ppm of OTA produced byPenicillium verrucosum.
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