Silva, M.V.G.B. da et al. 1997. Lasalocid effects on dairy cows production of in a semi-intensive management system. Brazilian Journal of Veterinary Research and Animal Science. 34, 4 (Aug. 1997), 236–239. DOI:https://doi.org/10.11606/issn.2318-3659.v34i4p236-239.