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[Study on the possible presence of aflatoxin B 1 in liver and muscle tissue of slaughter animals].

Seventy-seven samples of liver (from pigs, bulls, cows, broiler chickens, layers), twenty-eight samples of white muscle (from pigs, broilers, layers), and twenty-four samples of red muscle (from pigs, broilers, layers) were examined by the modified Jacobson method (Jacobson et al. 1971) for the contingent presence of aflatoxin B1. The samples came from healthy animals, part of them from animals fed non-traditional feed containing pig excrements. Positive findings were only obtained in two samples of pork liver, out of the total number of 30 samples. One sample came from pigs fed a ration containing 5% of pig excrements, the other from a traditionally fed pig. The amounts of aflatoxin B1 found in these two samples can be treated as trace quantities, since the concentration did not exceed 0.1 microgram per kg. In the samples of muscle and liver of the other farm animals, the chromatogram did not show the presence of spots which might resemble, in colour and position, the spots of aflatoxin B1.