UPDATE 1-Tyson Foods to end use of human antibiotics in U.S. chickens by 2017
April 28, 2015 at 12:14 PM EDT
CHICAGO, April 28 (Reuters) - Tyson Foods Inc, the largest U.S. poultry producer, plans to eliminate use of human antibiotics in its chicken flocks by September 2017, one of the most aggressive timetables yet set by an American poultry company.