Chen, Siyu Rearing system causes changes of behavior, microbiome, and gene expression of chickens. [electronic resource] - Poultry science Sep 2019 - 3365-3376 p. digital Publication Type: Journal Article ISSN: 1525-3171 Standard No.: 10.3382/ps/pez140 doi Subjects--Topical Terms: Animal Husbandry--methodsAnimalsBacteria--classificationBehavior, AnimalChickens--geneticsFemaleGastrointestinal MicrobiomeGene ExpressionHousing, Animal