MOPAC, a plant at Sourderton, Pa., that sometimes buys cull cows from Ontario, has been warned about pentobarbital residues in tallow it markets from its rendering plant.
Pentobarbital is commonly used as a livestock anaesthetic or for euthanasia.
MOPAC was warned twice by state officials – in February and mid-April last year – that the chemical had been identified in tallow.
Now it’s the United States Food and Drug Administration that has issued a warning letter.
The plant is owned by JBS USA, the largest beef-packing company in the world which is controlled from Brazil.