Litter SizeBreedingCulture MediaReproductionWeaningSwineOvulationPregnancyLactationFertilityBody WeightPregnancy, AnimalParityAnimals, SucklingHybrid VigorSelection, GeneticSheepBirth WeightAnimals, NewbornAnimal HusbandrySex RatioCrosses, GeneticFetal ViabilityLeast-Squares AnalysisFetal DeathUterusWeight GainEmbryonic and Fetal DevelopmentEstrusAnimal Nutritional Physiological PhenomenaOrgan SizeMilkAnimal Population GroupsModels, GeneticEatingSexual MaturationArvicolinaeSus scrofaInbreedingQuantitative Trait, HeritableFetal ResorptionInsemination, ArtificialRandom AllocationPhenotypeCarnivoryAnimal FeedMass MediaHousing, AnimalOtitis MediaScrotumOvernutritionDicambaTrenbolone AcetateFetusEmbryo ImplantationVaccines, ContraceptiveParturitionStillbirthTime FactorsViviparity, NonmammalianBody CompositionSeasonsEstrus DetectionCulture Media, ConditionedPlacentaOvaryAdipose TissueFetal DevelopmentQuadrupletsMaternal BehaviorOvulation InhibitionGenotype