Yabe, M.T. et al. 2015. Characteristics of milk production systems and feed strategies for dairy cows in the North and Northwest of Paraná State. Semina: Ciências Agrárias. 36, 6Supl2 (Dec. 2015), 4469–4480. DOI:https://doi.org/10.5433/1679-0359.2015v36n6Supl2p4469.