ColostrumAnimals, NewbornInfant, NewbornMilkMilk, HumanInfant, Newborn, DiseasesImmunity, Maternally-AcquiredPregnancyMilk SubstitutesCattleAnimals, SucklingLactationNeonatal ScreeningSwineImmunoglobulin A, SecretoryAnimal Nutritional Physiological PhenomenaLactoglobulinsImmunoglobulin GLactoferrinImmunoglobulin A