Tyson Foods to suspend buying cattle fed Zilmax additive

CHICAGO (Reuters) - Tyson Foods Inc, the largest U.S. meat processor, said it would suspend purchases of cattle fed the growth enhancer Zilmax, saying it was worried about cases of cattle with difficulty walking although it did not know the specific cause of problem.

Source: http://feeds.reuters.com/~r/reuters/healthNews/~3/OeEp7N4ZeZo/story01.htm

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