@article{rocha_paulino_fernandes_barros_lopes_galon_silva_almeida_2012,  title={Net requirements of energy, protein and macrominerals for weight gain of grazing beef cattle castrated at different ages, with and without supplementation},  volume={41},  ISSN={1516-3598},  url={https://doi.org/10.1590/S1516-35982012000200025},  DOI={10.1590/S1516-35982012000200025},  number={2},  journal={Revista Brasileira de Zootecnia},  publisher={Sociedade Brasileira de Zootecnia},  author={Rocha, Anilza Andréia da and Paulino, Mário Fonseca and Fernandes, Henrique Jorge and Barros, Lívia Vieira de and Lopes, Sidnei Antonio and Galon, Leandro and Silva, Aline Gomes da and Almeida, Daniel Mageste de},  year={2012},  month={Feb},  pages={407–413} }