animals varying in genetic potential for birth weight ( bwa ) , yearling weight ( yw ) , mature weight ( wma ) and milk production ( pma ) were simulated under both a weanling system of management ( weaned calves custom-fed in the feedlot ) and a yearling system ( calves wintered on the ranch , then custom-fed after their second summer ) .
C0005612
birth weight
C0005910
weight