@article{liu_niu_min_wang_zhang_he_li_sun_liu_2015,  title={Effects of dietary crude protein on the growth performance, carcass characteristics and serum biochemical indexes of Lueyang black-boned chickens from seven to twelve weeks of age},  volume={17},  ISSN={1516-635X},  url={https://doi.org/10.1590/1516-635x1701103-108},  DOI={10.1590/1516-635x1701103-108},  number={1},  journal={Brazilian Journal of Poultry Science},  publisher={Fundação de Apoio à Ciência e Tecnologia Animal},  author={Liu, SK and Niu, ZY and Min, YN and Wang, ZP and Zhang, J and He, ZF and Li, HL and Sun, TT and Liu, FZ},  year={2015},  month={Jan},  pages={103–108} }