1. A composition comprising at least one long chain polyunsaturated fatty acid (LC-PUFA), at least one probiotic and an oligosaccharide mixture, said mixture comprising at least one N-acetylated oligosaccharide, at least one sialylated oligosaccharide and at least one sialylated oligosaccharide at least one neutral oligosaccharide for brain growth and / or cognitive and / or psychomotor development. 2. The composition of the preceding claim, wherein the neutral oligosaccharide is preferably selected from fructooligosaccharides (FOS) and / or galactooligosaccharides (GOS), preferably GOS. 3. The composition of claim 1, wherein said oligosaccharide mixture contains at least one N-acetylated oligosaccharide selected from the group consisting of GalNAcα1,3Galβ1,4Glc (= 3′GalNAc-Lac = N-acetyl-galactosaminyl-lactose), Galβ1 , 4GlcNAcβ1,3Galβ1,4Glc, Galβ1,3GlcNAcβ1,3Galβ1,4Glc and Galβ1, 6GalNAcα1,3Galβ1,4Glc (= 6′Gal-3GalNAc-lac = galactosyl-N-acetyl-galactosaminyl-lactosylGlaclGl-βlc1Glβ1lGl-βlc1,1Gl-ll-lactose, 1, (lacto-N-neotetraose or LNnT) and Galβ1,3GlcNAcβ1,3Galβ1,4Glc (lacto-N-tetraose or LNT), at least one sialylated oligosaccharide selected from the group consisting of NeuAcα2,3Galβ1,4Glc (= 3 ′ -sialyllactoses) and NeuAcα2.6Galβ1.4Glc (= 6′-siali lactose), and at least one neutral oligosaccharide selected from the group consisting of Galβ1,6Gal (= β1,6-digalaktozida)； Galβ1.6Galβ1.4Glc (= 6′Gal-lac)； Galβ1.6Galβ1.6Glc； Galβ1,3Galβ1,3Glc； Galβ1,3Galβ1,4Glc (= 3′Gal-lac)； Galβ1.6Galβ1.6Galβ1.4Glc (= 6 ′, 6-diGal-lac)； Galβ1.6Galβ1.3Galβ1.4Glc (= 6 ′, 3-diGal-lac)； Galβ1,3Galβ1,6Galβ1,4Glc (= 3 ′, 6-diGal-lac)； Galβ1,3Galβ1,3Galβ1,4Glc (= 3 ′, 3-diGal-lac)； Galβ1,4Galβ1,4Glc (= 4′Gal-lac) and Galβ1,4Galβ1,4Galβ1,4Glc (= 4 ′, 4-diGal-lac) and Fucα1,2Galβ1,4Glc (= 2 ′ fucosyllactose or FL). 4. The composition according to claim 1 or claim 3, in which the mixture of oligosaccharides contains: 0.25-20%, preferably 0.3-10%, more preferably1. Композиция, содержащая по
