SPRINGDALE, Ark. (AP)--Arkansas-based Tyson Foods (TSN), the world's largest meat producer, plans to offer two new lines of so-called natural beef worldwide. Distribution is to start next month.

The products will be in addition to other Tyson beef. The company says the new lines will come from Angus cattle that have never received antibiotics or hormones and have been fed only grass and grain. The cattle will be traced from birth and fed in natural-designated feed yards.

The company has a 26% share of the U.S. beef market.

Tyson says there is heightened demand for the new products. Some consumers are turning to organic and natural foods amid concerns over mad cow disease and the use of antibiotics and hormones.

More than 60 countries banned U.S. beef after a Washington state cow tested positive for mad cow in 2003.

Tyson operates five processing facilities in north Alabama.

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