Cattle fed In bedded confinement facilities had improved feedlot performance compared to cattle fed in open lots, according to records analyzed by Iowa State University and Land O'Lakes Purina animal scientists. Feedlot closeout records from 997 lotsof cattle fed in the upper Midwest from January 2007 to December 2009 were compared by housing type - open pen (OP) or bedded confinement barn (BC). OP consisted primarily of an earthen surface with concrete aprons at the feedbunk, dirt mounds and windbreaks, but no access to shelter.
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