Preterm infants are susceptible to postnatal growth restriction. Breast milk is the recommended source of nutrition for preterm infants. Many positive short-term health effects like prevention necrotizing enterocolitis , effects on gut development and immunological issues are associated with breast milk feedings.~The composition of breast milk usually meets the nutritional demands of term infants. As preterm infants have enhanced nutritional requirements, multicomponent fortifiers are added to breast milk in order to establish adequate growth and proper neurodevelopmental outcome.~Due to the various benefits of human milk feds to preterm infants, a human milk fortifier based on donor milk (Prolact+6 H2MF® Prolacta, City of Industry, California) has been developed. This human milk fortifier contains more energy and protein than bovine milk fortifiers. So far, accurate data on growth and weight gain under an exclusive diet with human milk and the human milk fortifier Prolact+6H2MF®are missing. With this study, the investigators want to evaluate the impact of a human milk based fortifier on weight gain in extremely low birth weight infants (ELBW, <1000g birth weight) in comparison to bovine milk based fortifier.
Preterm infants are susceptible to postnatal growth restriction. Breast milk is the recommended source of nutrition for preterm infants. As preterm infants have enhanced nutritional requirements, multicomponent fortifiers are added to breast milk in order to establish adequate growth.~Due to the various benefits of human milk feds to preterm infants, a human milk fortifier based on donor milk (Prolact+6 H2MF® Prolacta, City of Industry, California) has been developed. With this study, the investigators want to evaluate the effect of human milk fortification on weight gain in extremely low birth weight infants (ELBW, <1000g birth weight) in comparison to bovine fortification.