Litter SizeBreedingReproductionWeaningOvulationSwineLactationPregnancyFertilityBody WeightPregnancy, AnimalParityAnimals, SucklingHybrid VigorSelection, GeneticSheepBirth WeightAnimal HusbandryAnimals, NewbornSex RatioCrosses, GeneticLeast-Squares AnalysisFetal DeathFetal ViabilityUterusWeight GainAnimal Nutritional Physiological PhenomenaEstrusOrgan SizeMilkModels, GeneticEmbryonic and Fetal DevelopmentAnimal Population GroupsEatingSexual MaturationArvicolinaeInbreedingQuantitative Trait, HeritableSus scrofaRandom AllocationFetal ResorptionInsemination, ArtificialCarnivoryAnimal FeedHousing, AnimalScrotumOvernutritionPhenotypeDicambaTrenbolone AcetateVaccines, ContraceptiveSeasonsParturitionFetusStillbirthEmbryo ImplantationBody CompositionViviparity, NonmammalianEstrus DetectionTime FactorsPlacentaQuadrupletsFetal DevelopmentGenotypeOvulation InhibitionMaternal BehaviorAdipose Tissue