Influence of Duration of Dietary Vitamin E Supplementation on Swine Growth Performance and Carcass Quality

Kansas State University Swine Research. Supplementing medium-lean genotype pigs with supranutritional concentrations of dietary vitamin E (91 IU d-“-tocopheryl acetate/lb of feed) for as long as 70 d during the finishing phase was not effective in improving swine performance, feeding characteristics, and 24 h loin muscle quality. However, lower carcass temperatures obtained by spray chilling pork sides at 0C versus 4.4C had a beneficial effect on 24 h carcass quality by improving marbling and lean firmness scores and reducing loin muscle moisture exudate. Overall, 24 h pork carcass quality was impacted more by chill rate than dietary vitamin E supplementation.