The idea of sustainability is loosely applied to all livestock production systems subject to a variety of factors.The potential for sustainability tends to vary considerably according to animal species and the cumulative managerial pressure applied to each farm towards circular economy and use of local resources. However, this potential is influenced by many factors including nutrition, reproduction, and animal health. In this study, well-established methodologies using a designated questionnaire for farm surveys, milk recordings protocols and artificial insemination techniques were applied into sheep farms that were selected based on their characteristics and performance. Individual milk recording was performed monthly (n=5), after weaning of lambs in intensive Lacaune sheep farms in central Greece. Following each milk recording and based on the average total milk production, ewes were allocated into a high or a low milk production group. Both groups were fed according to INRA recommendations to meet nutritional requirements. Feeding costs of two scenarios were calculated; ewes allocated to high or low groups compared to ewes kept in a single group. Using individual milk records in relation to flock average, about 30% of ewes with the highest yields were selected for Artificial Insemination (AI). Feeding cost was reduced by 0.037€/L of produced milk when ewes were allocated to high and low groups; the highest reduction was observed after the 4th (0.046 €/L) and 5th (0.047 €/L) milk recording. Moreover, 9.5% of ewes in the flock were culled due to low productivity. Milk production of ewes that were subjected to AI was higher by 27% (65L) compared to the flock’s average. In conclusion, the analysis of recording data enabled decision-making for planning effective nutritional and reproductive management practices in intensive dairy sheep farms ensuring sustainable economic growth and use of farm resources.