Mazutti, K. et al. 2016. Effect of colistin and tylosin used as feed additives on the performance, diarrhea incidence, and immune response of nursery pigs. Semina: Ciências Agrárias. 37, 4 (Aug. 2016), 1947–1962. DOI:https://doi.org/10.5433/1679-0359.2016v37n4p1947.