The objective of this experiment was to evaluate the effects of cow BCS during gestation on productive parameters of the offspring. Ninety-seven Angus × Hereford cows pregnant to AI and to the same sire were assigned to the study based on their BCS during gestation: (1) ADQ = cows with adequate BCS throughout gestation (n = 20), (2) INDQ = cows with inadequate BCS throughout gestation (n = 20), (3) EARLY = cows that gained BCS during the first trimester of gestation and maintained BCS until calving (n = 19), (4) MID = cows that gained BCS during the second trimester of gestation and maintained BCS until calving (n = 19), and (5) LATE = cows that gained BCS during the third trimester of gestation and maintained BCS until calving (n = 19). Upon calving, calf BW was recorded. Approximately 60 d after calving, cow milk production was assessed using the weigh-suckle-weigh technique (12 h calf removal following by 30 min of nursing). Calves were weaned at 7 mo of age. All data were analyzed with the MIXED procedure of SAS. Cow BCS did not change (P ≥ 0.30) for ADQ and INDQ cows during gestation (average 4.6 and 6.0, respectively) and increased (P ≤ 0.01; based on BCS collected at AI, beginning of the second and third trimesters of gestation, and calving) for EARLY (4.4, 5.4, 6.0, and 6.1; SEM = 0.2), MID (4.4, 4.5, 6.1, and 6.1; SEM = 0.2), and LATE (4.5, 4.6, 4.7, and 5.9; SEM = 0.2). No treatment effects were detected (P ≥ 0.42) for calving rate (93, 100, 93, 100, and 100%, respectively; SEM = 5), calf BW at birth (45.2, 42.8, 43.2, 44.3, and 42.2 kg, respectively; SEM = 2.1), and estimated cow milk production (14.8, 13.7, 13.4, 14.2, and 15.7 kg/d, respectively; SEM = 1.6). However, calves from cows that gained BCS during gestation (EARLY, MID, and LATE) were heavier at weaning compared with calves from cows that maintained BCS during gestation (ADQ and INDQ; 253, 251, 260, 268, and 264 kg, respectively; SEM = 3.5). Therefore, these results indicate that increasing BCS during gestation in beef cows benefits weaning BW of the offspring,