@article{roll_briz_levrino_2009,  title={Floor versus cage rearing: effects on production, egg quality and physical condition of laying hens housed in furnished cages},  volume={39},  ISSN={0103-8478},  url={https://doi.org/10.1590/S0103-84782009000500034},  DOI={10.1590/S0103-84782009000500034},  number={5},  journal={Ciência Rural},  publisher={Universidade Federal de Santa Maria},  author={Roll, Victor Fernando Büttow and Briz, Ricardo Cepero and Levrino, Gustavo Adolfo Maria},  year={2009},  month={Aug},  pages={1527–1532} }