Santos, A.X. dos et al. 2013. Effects of supplementation of sunflower cake for lactating cows: productive performance and economic analysis. Semina: Ciências Agrárias. 33, 6Supl2 (Feb. 2013), 3401–3410. DOI:https://doi.org/10.5433/1679-0359.2012v33n6Supl2p3401.