Born on Nov. 21, 1944 in Belleville, Ill. and raised on a livestock and grain farm in St. Clair County, Ill. He graduated with a BS and MS from Southern Illinois University in Carbondale in 1968. He was then hired as an Associate Extension Adviser for McDonough County from Aug. 1968 to Aug. 1971. He managed the University of Illinois Swine Nutrition Research Farm in Urbana from 1971 until 1974 when he accepted the responsibilities of Area Livestock Adviser and Animal Systems Educator for the U of I Extension Service. In 1974 Seibert began serving as an Extension Service agent, a position he has held for 34 years. His primary focus during this tenure has been beef cattle production.
From the description of An interview with David Seibert / David Seibert ; Richard Hull, interviewer. 2008. (Abraham Lincoln Presidential Library). WorldCat record id: 434090657
