Litter SizeBreedingReproductionWeaningOvulationLactationSwinePregnancyFertilityBody WeightPregnancy, AnimalParityAnimals, SucklingHybrid VigorSelection, GeneticBirth WeightGamma RaysSheepAnimal HusbandryAnimals, NewbornSex RatioCrosses, GeneticLeast-Squares AnalysisFetal DeathFetal ViabilityUterusWeight GainAnimal Nutritional Physiological PhenomenaEstrusOrgan SizeMilkEmbryonic and Fetal DevelopmentModels, GeneticAnimal Population GroupsEatingSexual MaturationArvicolinaeInbreedingQuantitative Trait, HeritableSus scrofaFetal ResorptionInsemination, ArtificialElasmobranchiiRandom AllocationSkates (Fish)CarnivoryHousing, AnimalAnimal FeedPhenotypeScrotumOvernutritionDicambaTrenbolone AcetateVaccines, ContraceptiveParturitionStillbirthFetusEmbryo ImplantationBody CompositionSeasonsViviparity, NonmammalianEstrus DetectionQuadrupletsFetal DevelopmentPlacentaOvulation InhibitionMaternal Behavior