The new contamination came to light on Wednesday after workers at feed producer Bauduin-Cambier in Feluy, Wallonia, found PCB in a random sample of feed preparations. Subsequent tests showed other batches of feed were also contaminated. The Belgian government said all feed produced by the plant since 20 April - the last date on which a random test showed no contamination - was potentially tainted with the PCBs.
The government said around 200 livestock farms had received feed from the plant since then and pledged to destroy all milk produced by them over that period. Most of the farms are in Belgium; several horse studs in northern France were also affected. The government said it would investigate whether any produce intended for human consumption - including any since exported out of the country - had been contaminated by the chemical.
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