that feeding ractopamine-hydrochloride to 4.5%. In addition, visible fat content in pork finishing heifers generally improved the is a major determinant of purchase intent efficiency of carcass gain with minimal effect with consumers preferring leaner products on marbling score, yield grade, loin muscle (Brewer et al. 2001; Rincker et al. 2008). area, or percentages of carcasses grading Fernandez et al. (1999) reported that pork USDA Choice. Avendano-Reyes et al. texture and taste are enhanced at intramuscu- (2006) reported that feeding either zilpaterol- lar fat levels up to 3.25%, but inconsistent or ractopamine-hydrochloride considerably effects occurred with respect to tenderness/ improved gain-to-feed ratio, hot carcass toughness. weight, and carcass yield. Zilpaterol increased Ellis et al. (1996) reported that longissi- loin muscle area
annaabi.ee 
