Fetal WeightBirth WeightPregnancyFetal DevelopmentUltrasonography, PrenatalBody WeightGestational AgeFetusFetal Growth RetardationPlacentaPregnancy Trimester, ThirdFetal MacrosomiaWeight GainInfant, NewbornBiometryEmbryonic and Fetal DevelopmentPremature BirthWeight LossInfant, Low Birth WeightLitter SizePregnancy, AnimalOrgan SizeBirth RatePregnancy OutcomeMolecular WeightMaternal-Fetal ExchangeAnthropometryUmbilical ArteriesFetal Nutrition DisordersAmniotic FluidFetal MonitoringPregnancy Trimester, SecondAbnormalities, Drug-InducedFetal ResorptionInfant, Small for Gestational AgeParityUterusPregnancy, TwinPregnancy ComplicationsBirth OrderBirth CertificatesFetal DeathPlacental CirculationReproducibility of ResultsProspective StudiesFetal ViabilityOligohydramniosMaternal AgeCrown-Rump LengthSheepPredictive Value of TestsAbdomenPregnancy in DiabeticsParietal BoneTeratogensPregnancy, ProlongedPolyhydramniosFetal BloodMaternal ExposureReference ValuesPrenatal Exposure Delayed EffectsPlacental InsufficiencyMaternal Nutritional Physiological PhenomenaThighUltrasonographyPregnancy, High-RiskFetal HeartRegression AnalysisCesarean SectionSensitivity and SpecificitySwineTwinsCohort StudiesFemurBirth IntervalsRetrospective StudiesRisk FactorsReproductionNutrition Disorders