ارزيابي سطح آفلاتوكسين B1 د ر خوراك د ام مزارع گاو شيري استان چهار محال و بختياري

Assessment of aflatoxin B1 levels in animal feed of dairy farms in Chaharmahal & Bakhtiari

The presence of aflatoxin B1 in 108 samples of animal feed contain alfalfa meal, corn, corn silage, cottonseed meal, barley and wheat bran obtained from dairy farms of Chaharmahal & Bakhtiari analysed. Aflatoxin B1 levels were investigated by enzyme linked immunosorbent assay (ELISA) which is a rapid and sensitive method. In 73 (67.6%) of the 108 samples the presence of aflatoxin B1 was detected in concentration ranging between 0.80 Mg/kg and 155.18 Mg/kg. Aflatoxin level in 19 (17.6%) of these samples were higher than the maximum tolerance limit (30). Results showed that there were statistical difference between aflatoxin B1 contents in cottonseed meal with wheat bran (p=0.014), barley (p=0.032) and alfalfa meal (p=0.027). Statistical evaluation showed that mean contamination level of aflatocxin B1 in Winter samples were significantly higher than those of Summer (p=0.008).