Dr. Dean Richardson, chief of surgery at the New Bolton Center, reported Tuesday that Barbaro is resting comfortably after receiving his sixth cast yesterday since his accident at the Preakness Stakes (gr. I) on May 20."Barbaro is eating well and resting in his stall," said Richardson, who also treated the colt for an abscess in his left hind foot. "He's tolerating the new cast well," said Richardson. "We have changed his left hind foot bandage and that looks improved. His vital signs remain stable and his attitude and appetite remain excellent." Barbaro, winner of the Kentucky Derby Presented by Yum! Brands (gr. I), continues to be monitored closely in the Intensive Care Unit of the George D. Widener Hospital at the University of Pennsylvania's New Bolton Center.