SAO PAULO (Reuters) -JBS, the world's largest meat company, reported a net profit fall in the third quarter in spite of a rise in global net sales amid a still-challenging beef market environment in the U.S., according to an earnings statement on Thursday.

The company said its third-quarter profit dropped to $581 million from $693 million in the same year-ago quarter, citing negative beef margins in the U.S. amid multi-year low cattle supplies.