Broilers and their parent stock have the potential for rapid early growth and eat at or near the capacity of their gastrointestinal tract when fed ad libitum. Thus, unless the feed intake of broiler breeders is limited, the resulting obesity will have negative effects on reproduction, vigor, and viability. Under current commercial feed restriction programs, breeders are fed an amount of feed either daily or on alternate days that is calculated to achieve and maintain preferred body weights. Feed restriction of this type has been shown to be a stressor in broiler breeders, resulting in increases in activity, aggression, stress hormone levels, and the performance of stereotyped behaviors (1). Although the health benefits of commercial feed restriction programs to the bird outweigh these negative aspects, alternative methods for controlling body weight in breeders require investigation.