Litter SizeBreedingReproductionPregnancyOvulationWeaningLactationSwineFertilityBody WeightPregnancy, AnimalParityAnimals, SucklingHybrid VigorSelection, GeneticBirth WeightSheepSex RatioAnimals, NewbornAnimal HusbandryCrosses, GeneticUterusFetal DeathLeast-Squares AnalysisFetal ViabilityOrgan SizeEstrusWeight GainAnimal Nutritional Physiological PhenomenaSexual MaturationEmbryonic and Fetal DevelopmentMilkModels, GeneticAnimal Population GroupsArvicolinaeSexual Behavior, AnimalEatingInbreedingQuantitative Trait, HeritableRandom AllocationSex CharacteristicsSus scrofaInsemination, ArtificialFetal ResorptionPhenotypeHousing, AnimalCarnivoryAnimal FeedGenitalia, FemaleOvaryScrotumCopulationOvernutritionDicambaTrenbolone AcetateSeasonsFetusParturitionEmbryo ImplantationVaccines, ContraceptiveBody CompositionViviparity, NonmammalianStillbirthMaternal BehaviorEstrus DetectionTime FactorsAnalysis of VarianceGenotypeSex FactorsMaternal-Fetal ExchangeFetal DevelopmentPlacentaAdipose TissueMice, Inbred StrainsGonadotropins, EquineOvulation InhibitionGenetic VariationQuadrupletsProgesteronePrenatal Exposure Delayed Effects