In dairy goats, the reproductive and productive performances depend on rearing management, notably on strategies aiming at the optimization of the growth, body development, onset of puberty and mammary gland development, while ensuring future milk potential and longevity. In the recent years, early weaning has become more used for numerous reasons, including reduction of the costs and flexibility. A high plane of nutrition just after weaning is an interesting way to offset the low weight of early weaned goats. In any case, the impacts of the diet supplied during early life on the growth, reproduction and the development of the mammary parenchyma have not been determined in goat kids. Hence, the objectives of this study are to investigate the effects of different feeding levels applied until 8 mo of age on the growth, reproduction performances and mammary gland development in early weaned goats. Ninety Alpine goats were weaned at 9.7 ± 1.4 kg (30 d old) and subjected until 8 mo of age to 3 feeding levels: Low (L, 365 g DM/d, n = 30), Moderate (M, 730 g DM/d, n = 30) or High (H, 1090 g DM/d, n = 30) concentrate diet. Goats were weight twice a month and morphometric parameters (heart girth, height at withers and crown-rump length) were performed once a month. At 7 mo of age (before puberty), 5 goats of each group were slaughtered and mammary glands were analyzed. At 4 mo of age, the BW of the L group was 23% lower than in the 2 others groups (P < 0.001). Morphometric parameters were consistent with BW observations (P < 0.001). At slaughter, the mammary glands of the L group were twice lighter than those of M and H group (P < 0.001). Proportion of parenchyma, determined by histological analysis, suggested that the mammary glands are less developed in the L goats group. The CK19 expression, analyzed by Western blot as a marker of luminal cells, was consistent with histological results. Finally, the onset of puberty and reproduction performances were not impacted by feeding levels. To conclude, low feeding level from early weaning to 8 mo old negatively impacted the pre-pubertal growth and mammary gland development.