Litter SizeBreedingReproductionWeaningOvulationSwineLactationPregnancyFertilityBody WeightPregnancy, AnimalParityAnimals, SucklingHybrid VigorSelection, GeneticBirth WeightSheepAnimal HusbandryAnimals, NewbornSex RatioCrosses, GeneticLeast-Squares AnalysisFetal DeathFetal ViabilityUterusWeight GainAnimal Nutritional Physiological PhenomenaOrgan SizeEstrusMilkModels, GeneticEmbryonic and Fetal DevelopmentAnimal Population GroupsEatingSexual MaturationArvicolinaeInbreedingQuantitative Trait, HeritableRandom AllocationSus scrofaInsemination, ArtificialFetal ResorptionAnimal FeedHousing, AnimalCarnivoryScrotumPhenotypeOvernutritionDicambaTrenbolone AcetateSeasonsParturitionVaccines, ContraceptiveBody CompositionFetusStillbirthTime FactorsEmbryo ImplantationViviparity, NonmammalianEstrus DetectionGenotypeGenetic VariationAdipose TissuePlacentaFetal DevelopmentQuadrupletsMaternal BehaviorOvulation InhibitionOvary