Litter SizeBreedingReproductionWeaningOvulationLactationPregnancySwineFertilityBody WeightPregnancy, AnimalParityAnimals, SucklingHybrid VigorSelection, GeneticSheepBirth WeightAnimals, NewbornAnimal HusbandryRodent DiseasesSex RatioCrosses, GeneticRodentiaUterusLeast-Squares AnalysisFetal DeathFetal ViabilityArvicolinaeOrgan SizeWeight GainAnimal Nutritional Physiological PhenomenaEstrusMilkEmbryonic and Fetal DevelopmentAnimal Population GroupsModels, GeneticEatingSexual MaturationInbreedingSus scrofaQuantitative Trait, HeritableRandom AllocationHousing, AnimalFetal ResorptionInsemination, ArtificialCarnivoryAnimal FeedOvernutritionScrotumPhenotypeDicambaTrenbolone AcetateFetusVaccines, ContraceptiveEmbryo ImplantationParturitionStillbirthSeasonsBody CompositionViviparity, NonmammalianEstrus DetectionPlacentaFetal DevelopmentAdipose TissueMaternal BehaviorQuadrupletsOvaryMaternal-Fetal ExchangeOvulation InhibitionMice, Inbred Strains