Selenium Content of Feed and of Commercially Grown Turkeys

As a contribution toward the efforts of the American Feed Manufacturers Association\u27s petition to the Food and Drug Administration to permit selenium additions to animal feeds, two flocks of Large Broad White turkeys in South Dakota were monitored. Each flock v/as observed three times during the growing season and at slaughter. Feed samples were taken periodically throughout the growing period and tissue samples were taken after coding and packaging. A portion of the distal end of the pectoralis minor (breast muscle) and the liver were obtained. Selenium analyses were conducted according to the method of Olson (1969)