Litter SizeBreedingReproductionWeaningOvulationPregnancyLactationSwineFertilityBody WeightPregnancy, AnimalBiological MarkersParityAnimals, SucklingHybrid VigorSelection, GeneticBirth WeightSheepAnimals, NewbornAnimal HusbandryLeast-Squares AnalysisSex RatioCrosses, GeneticFetal DeathFetal ViabilityUterusWeight GainOrgan SizeAnimal Nutritional Physiological PhenomenaEstrusMilkEmbryonic and Fetal DevelopmentModels, GeneticAnimal Population GroupsEatingSexual MaturationArvicolinaeTumor Markers, BiologicalInbreedingQuantitative Trait, HeritableSus scrofaRandom AllocationFetal ResorptionInsemination, ArtificialPhenotypeCarnivoryAnimal FeedHousing, AnimalScrotumOvernutritionDicambaTrenbolone AcetateFetusVaccines, ContraceptiveParturitionEmbryo ImplantationStillbirthBody CompositionViviparity, NonmammalianSeasonsGenotypeEstrus DetectionBiomarkers, PharmacologicalTime FactorsPlacentaMaternal-Fetal ExchangeAdipose TissueFetal DevelopmentDietAnalysis of VarianceQuadrupletsProteomicsOvulation InhibitionMaternal BehaviorOvary