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More eggs but less social and more fearful? Differences in behavioral traits in relation to the phylogenetic background and productivity level in laying hens

BiologyProductivity LevelAnimal PerformanceBehavioral SciencesBreeding BehaviorBehavioral TraitsFitnessAnimal BehaviourNatural SciencesSocial BehaviorEvolutionary BiologyEducationAvian EvolutionPoultry FarmingAnimal BehaviorPhylogenetic BackgroundPoultry Science