Inclusion Criteria:  1. Newborn with a pediatric age of less than 37 weeks categorized very preterm (28 to 32 weeks) and late preterm (32 to 36weeks) by the World Health Organization weighing not more than 1500.  2. Preterm infants admitted at the Neonatal Intensive care unit of Ilocos Training Regional and Medical Center not more than 24 hours of age.  3. Preterm infants with orogastric tube in place. 4. Preterm infants with no other condition other than prematurity and respiratory distress syndrome.  5. Preterm infant with an Apgar score of more than 6 in the first minute of life.  Exclusion Criteria:  Preterm infants more than 1 day of life. Preterm infants diagnosed with NEC Preterm infants who is born to a mother of who considered as a minor (<18 years old) and is not married to the father of the unborn child. Preterm infants that could not be fed through oral gastric tube due to a secondary problem. Preterm infants with other comorbidities such as asphyxia, congenital anomalies, and other inherited disorders.  Meconium Stained Preterm infants  -