The present invention relates to compositions to be administered to infants delivered via caesarian section and in particular to the use of a) at least two different microorganisms; or b) at least one microorganism and at least one indigestible oligosaccharide; or c) at least two, preferably three, different Bifidobacteria species, subspecies or strains for the manufacture of a composition for enteral administration to an infant delivered via caesarean section. Thereby it is possible to stimulate the healthy development of the intestinal flora of said infants.

First, prepared is a whey degradation medium to which a protease, yeast extract, and the like are added. Further, polyoxyethylene sorbitan monooleate or propylene glycol monooleate is added to the whey degradation medium. The whey degradation medium is inoculated with bacteriocin-producing lactic acid bacterium and the lactic acid bacterium is cultured while the whey degradation medium is maintained at pH of 4 to 5. After the completion of the culture, the whey degradation medium (culture solution) is centrifuged to thereby separate therefrom a concentrated cell suspension containing the lactic acid bacterium in a concentrated form. The concentrated cell suspension has very low antibacterial activity (several tens AU or less). Then, by adding the concentrated cell suspension to a yogurt mix and fermenting the same, it is possible to produce yogurt containing the bacteriocin-producing lactic acid bacterium without any delay in the fermentation.

The present invention relates to methods for feeding and to compositions to be administered to infants delivered via caesarian section and in particular to the use of a) at least two different microorganisms; or b) at least one microorganism and at least one indigestible oligosaccharide; or c)at least two different Bifidobacteria species, subspecies or strains for the manufacture of a composition for enteral administration to an infant delivered via caesarean section. Thereby it is possible to stimulate the healthy development of the intestinal flora of said infants.