In this study, the effects of different broiler parents' body weights on performance, slaughter and carcass traits were investigated in broilers. For this purpose. broiler parents were divided into three different live-weight groups at 26lh week. Broilers obtained from each group were raised along 49 days in different floor pens. Head, feet, viscera, wings, thighs, drumsticks and breast weights and some measurements of the breast were recorded at broilers slaughtered. Dressing percentages and rates of carcass parts were estimated. According to data, broilers obtained from dam of which body weight is below 3000 g and sire of which body weight is below 4000 g at sexual maturity had significantly less live-weight, carcass, thigh, drumstick, wing and breast weights than the others (P<0.05). There were no statistical differences for percentages of head, feet, wings and dressing percentages between groups.