Cattle

• Bird Flu Viruses Raise Mounting Concerns Among Scientists - Researchers are not just worried about the virus popping up on American farms. Other types are causing trouble around the world.
• Brazil surpassing US as top beef producer, easing global supply squeeze - By Ana Mano and Peter Hobson BARRETOS, Brazil, Jan 7 (Reuters) - Brazil surpassed the U.S. as the world's top beef producer last year, according to market estimates, after the South American country