The objective of this study was to evaluate nutrient intake in goats’ milk-fed goats varying in fat concentration (24.2, 34.4, 44.3, 65.6 and 82.1 g.kg-1 MS) to study Its effect on feed performance and feed conversion, during lactation and post-suckling, in a completely randomized design in a factorial scheme with 12 replicates per liquid diet initially. The experimental period began on the seventh day of life, with 60 Saanen and Alpina goats confined in individual metabolism cages, receiving 1.5 L / Milk / day divided into two meals at 08:00 and 15:00 until 15 days of life; From day 16 to day 52 of life was offered 2L / Milk in two meals, from day 53 and until day 67 of life the animals began to receive 1L / Milk in the afternoon; And from day 37 to day 195 of life Tifton-85 (Cynodon dactylon) ad libitum grass and 10 g/kg PV of concentrated feed were supplied for each animal. A slaughter reference was made to the seven days of life and four slaughterings during the experiment: 37, 67, 142 and 195 days of life. All statistical procedures were programmed in the SAS (9.0) through PROC NLIN adopting 0.05% probability for the Type I error. There was a difference (P<0.001) in the consumption of dry matter, protein, fat and non-fibrous carbohydrates In the lactation phase. There was an effect (P<0.001) for the deposition of crude fat, crude protein and mineral matter in the animal body during the lactation phase. However, after the substitution by the solid diet, the reduction in this difference is verified in the medium term.