Fetal WeightInfant, Low Birth WeightBirth WeightInfant, NewbornBody WeightPregnancyGestational AgeFetal DevelopmentWeight GainUltrasonography, PrenatalInfant, Very Low Birth WeightWeight LossFetal Growth RetardationFetusFetal MacrosomiaInfant, Extremely Low Birth WeightPregnancy Trimester, ThirdPlacentaPremature BirthMolecular WeightEmbryonic and Fetal DevelopmentPregnancy OutcomeBiometryLitter SizeInfant, PrematureInfant, Small for Gestational AgeOrgan SizePregnancy, AnimalAnthropometryPregnancy ComplicationsMaternal AgeParityMaternal-Fetal ExchangeMaternal ExposureBirth RateUmbilical ArteriesFetal Nutrition DisordersPrenatal Exposure Delayed EffectsBirth OrderPregnancy Trimester, SecondProspective StudiesCohort StudiesFetal DeathInfant MortalityInfant, Premature, DiseasesRisk FactorsAmniotic FluidBirth CertificatesAbnormalities, Drug-InducedFetal MonitoringRegression AnalysisChild DevelopmentMaternal Nutritional Physiological PhenomenaTwinsIntensive Care Units, NeonatalPregnancy in DiabeticsObesityUterusPregnancy, TwinReference ValuesSheepBody Mass IndexRetrospective StudiesFetal BloodFetal ResorptionPredictive Value of TestsReproducibility of ResultsCesarean SectionWeaningPlacental CirculationDystociaMothersCrown-Rump LengthOligohydramniosPregnancy, ProlongedGrowthFetal ViabilityPrenatal CareAbdomenApgar ScoreSwineBody HeightBreedingBirth IntervalsPlacental InsufficiencyTime FactorsTeratogensParietal BonePolyhydramniosBronchopulmonary DysplasiaReproductionSex FactorsCongenital AbnormalitiesSensitivity and SpecificityPregnancy, High-RiskThighDelivery, ObstetricBody CompositionObstetric Labor, PrematureBirth Injuries