An oligosaccharide mixture based on oligosaccharides from one or several animal milks composed of two or more monosaccharide units. The oligosaccharide mixture comprises at least two oligosaccharide fractions which are each composed of at least two different oligosaccharides. Lactose does not pertain thereto and the total spectrum of the oligosaccharides in the oligosaccharide mixture differs from those present in animal milk or animal milks, wherefrom the oligosaccharide fractions are extracted and that a) if the oligosaccharides are extracted from only one animal milk, the proportion of neutral oligosaccharides to acidic oligosaccharides is 90-60:10-40 weight %, or b) if the oligosaccharides are extracted from at least two animal milks, the oligosaccharides extracted from two different animal milks each make up 10 weight % of the total amount of oligosaccharides present in the oligosaccharide mixture. The oligosaccharide mixture approximates human milk with respect to its positive properties.