@article{sanches_kiefer_carrijo_moura_silva_santos_2010,  title={Ractopamine levels for finishing barrows maintained in heat stress},  volume={39},  ISSN={1516-3598},  url={https://doi.org/10.1590/S1516-35982010000700019},  DOI={10.1590/S1516-35982010000700019},  number={7},  journal={Revista Brasileira de Zootecnia},  publisher={Sociedade Brasileira de Zootecnia},  author={Sanches, Josilene Figueiredo and Kiefer, Charles and Carrijo, Alfredo Sampaio and Moura, Mariana Souza de and Silva, Elizangela Alves da and Santos, Alexandre Pereira dos},  year={2010},  month={Jul},  pages={1523–1529} }