FetusPregnancyGestational AgeUltrasonography, PrenatalFetal DiseasesCampylobacter fetusPregnancy, AnimalTritrichomonas foetusPregnancy Trimester, SecondPlacentaMaternal-Fetal ExchangePregnancy Trimester, FirstFetal HeartFetal DevelopmentInfant, NewbornEmbryonic and Fetal DevelopmentPregnancy Trimester, ThirdFetal DeathFetal Growth RetardationFetal WeightPrenatal DiagnosisAmniotic FluidHeart Rate, FetalPregnancy ComplicationsLitter SizeAbortion, VeterinaryCrown-Rump LengthUterusPrenatal Exposure Delayed EffectsInfant, PrematureFetal BloodPregnancy OutcomePregnancy, MultipleBirth WeightLactationUmbilical ArteriesFetal HypoxiaPremature BirthAmniocentesisLabor, ObstetricPlacental CirculationAnimals, NewbornObstetric Labor, PrematureHydrops FetalisTwinsMaternal Nutritional Physiological PhenomenaFetal MonitoringDown SyndromeFetal MovementSwineFetal Organ MaturitySheepMaternal ExposureAbnormalities, Drug-InducedFetal ViabilityCesarean SectionFetal ResorptionOrgan SizeNuchal Translucency MeasurementUmbilical CordChorionic Villi SamplingPregnancy, High-RiskUltrasonography, DopplerTrisomyOligohydramniosBody WeightAbortion, SpontaneousTrophoblastsPrenatal Nutritional Physiological PhenomenaParityPre-EclampsiaPregnancy in DiabeticsChromosome DisordersPregnancy Complications, CardiovascularCongenital AbnormalitiesAbortion, InducedPregnancy TrimestersInfant, Small for Gestational AgePlacenta DiseasesHeart Defects, CongenitalProspective StudiesNeckAbortion, TherapeuticExtraembryonic MembranesBlood Flow VelocityUltrasonography, Doppler, PulsedNasal BoneSheep, DomesticHydrocortisoneDuctus ArteriosusChorionTritrichomonasCordocentesisFetoscopyTripletsReproductionFetal TherapiesCardiotocographyAmnionPlacentation