When practical, heifers within several weeks of parturition should be grouped separately and adapted to their early postpartum environment as reviewed by Grant and Albright (1995). Cows that experience abrupt environmental and social changes during the periparturient period often exhibit aberrant feeding behavior and are more susceptible to metabolic disorders (Bazeley and Pinsent, 1984). First-lactation heifers being introduced to new herdmates and milking facilities require careful management. A successful transition program, from 2 to 3 wk prepartum to 3 to 4 wk postpartum, may involve bringing heifers into the low-milk producing group approximately 3 wk before parturition. For 1 wk, heifers pass through the milking parlor to become accustomed to the parlor environment, free stalls, and concrete lots (Grant and Albright, 1995).