Litter SizeBody WeightBreedingReproductionPregnancyWeaningSwineLactationOvulationWeight GainBirth WeightFertilityPregnancy, AnimalParityWeight LossAnimals, SucklingHybrid VigorSelection, GeneticSheepMolecular WeightOrgan SizeAnimal HusbandryAnimals, NewbornCrosses, GeneticLeast-Squares AnalysisSex RatioFetal DeathUterusFetal ViabilityAnimal Nutritional Physiological PhenomenaEatingMilkEstrusEmbryonic and Fetal DevelopmentFetal WeightAnimal Population GroupsModels, GeneticSexual MaturationRandom AllocationArvicolinaeBody CompositionQuantitative Trait, HeritableAnimal FeedInbreedingSus scrofaFetal ResorptionInsemination, ArtificialHousing, AnimalCarnivoryPhenotypeScrotumOvernutritionAdipose TissueFetusDicambaFetal DevelopmentTrenbolone AcetateParturitionStillbirthEnergy IntakeSeasonsDietVaccines, ContraceptivePlacentaEmbryo ImplantationTime FactorsViviparity, NonmammalianGestational AgeEstrus DetectionAnalysis of VarianceMaternal-Fetal ExchangeBody ConstitutionGenotypeMaternal BehaviorOvaryQuadrupletsOvulation InhibitionRegression AnalysisMice, Inbred StrainsPrenatal Exposure Delayed Effects