Bridi, A.M. et al. 2008. Effects of ractopamine and gender on performance and carcass quality of swine with different halothane genotypes. Semina: Ciências Agrárias. 29, 3 (Sep. 2008), 713–722. DOI:https://doi.org/10.5433/1679-0359.2008v29n3p713.