Litter SizeBody WeightBreedingReproductionPregnancyWeaningSwineLactationWeight GainOvulationBirth WeightFertilityPregnancy, AnimalParityWeight LossAnimals, SucklingHybrid VigorSelection, GeneticSheepMolecular WeightOrgan SizeAnimal HusbandryAnimals, NewbornLeast-Squares AnalysisCrosses, GeneticSex RatioFetal DeathUterusFetal ViabilityEatingAnimal Nutritional Physiological PhenomenaMilkEstrusEmbryonic and Fetal DevelopmentFetal WeightModels, GeneticAnimal Population GroupsRandom AllocationSexual MaturationBody CompositionArvicolinaeQuantitative Trait, HeritableAnimal FeedInbreedingSus scrofaReference StandardsTime FactorsFetal ResorptionInsemination, ArtificialHousing, AnimalPhenotypeAdipose TissueCarnivoryScrotumOvernutritionFetusFetal DevelopmentDietDicambaParturitionEnergy IntakeAnalysis of VarianceTrenbolone AcetateSeasonsStillbirthPlacentaGestational AgeVaccines, ContraceptiveEmbryo ImplantationGenotypeRegression AnalysisViviparity, NonmammalianEstrus DetectionBody ConstitutionMaternal-Fetal ExchangeOvaryMaternal BehaviorGenetic VariationEnergy MetabolismPrenatal Exposure Delayed EffectsQuadrupletsOvulation InhibitionMice, Inbred Strains