Animals, SucklingGuinea PigsLactationSucking BehaviorAnimal Population GroupsWeaningMilk EjectionSwineMilkAnimals, NewbornSwine DiseasesPregnancyColostrumPostpartum PeriodOxytocinIntestine, SmallAnimal FeedBody WeightRandom AllocationAnimal Nutritional Physiological PhenomenaAnimal HusbandryImmunity, Maternally-AcquiredIntestinesIleumWeight GainProlactinSus scrofaLactaseCattleLitter SizeLiverAgingEnterotoxinsDietRats, Inbred StrainsDisaccharidasesJejunumKetone BodiesSwine, MiniatureDiarrheaReoviridae InfectionsMammary Glands, AnimalOrgan SizeTime FactorsEstrusAnovulationLuteinizing HormoneTrichinellaIntestinal MucosaPneumonia of Swine, MycoplasmalMaternal BehaviorRotavirusLactoseEatingFecesRotavirus InfectionsRNA, MessengerSucraseMolecular Sequence DataBrainIntestinal AbsorptionMaternal-Fetal ExchangeAnestrusBiological AssaySheepParturitionDigestionVirulenceGerm-Free LifeMicrovilliRats, Sprague-DawleyOvulationRats, WistarRelaxinBreast FeedingProgesteroneTissue DistributionDietary SupplementsDairyingBody CompositionMycoplasma hyopneumoniaeAge FactorsDigestive SystemPregnancy, AnimalFood, FormulatedHousing, AnimalSpecies SpecificityNutrition DisordersVibrio choleraeDisease Models, AnimalCholeraEscherichia coliBehavior, Animal