The objective of this study was to investigate the effects of elevating feed amounts during late gestation on the performance of sows and their pigs during lactation. A total of 419 individually-housed sows were used. Sows were balanced by parity (P2 –P10) and body condition score (BCS, 1-5) on d 90 of gestation to 2 treatments [Control or bump-feeding (BP)]. Within each treatment, sows were fed a common gestation diet according to their body condition: (thin, BCS < 3 = 2.7 kg/day; ideal BCS 3 = 2 kg/day; fat, BCS > 3 = 1.6 kg/day). For sows allotted to BP, feed intake was increased by 0.91 kg/d on d 90. Data were analyzed for main effects of treatment and within body condition category. Bump-feeding decreased lactation ADFI of ideal sows (P = 0.015; 6.53 and 5.99 kg, for control and BP, respectively), but not of thin (P = 0.122, 6.05 and 6.80 kg) or fat sows (P = 0.136, 5.79 and 6.78 kg). The number of still-born pigs decreased when thin (P = 0.005, 1.63 and 0.93 pigs for control and bump-feeding) and fat sows (P = 0.133, 1.74 and 1.13 pigs) were BP. However, this was not observed for ideal sows (P = 0.779, 1.28 and 1.27 pigs). Moreover, piglet birth weight (measured in a subsample of 55 litters) improved with BP (P = 0.048; 1.36 vs 1.55 kg, for control and BP, respectively). The impact of BP on birth weight was more evident for fat sows (P = 0.08, 1.25 and 1.61 kg). This resulted in a greater proportion of small pigs (< 3.63 kg) at weaning in litters from fat sows that were not BP (P = 0.019; 7.41 vs 0%, for control and BP, respectively).