Oliveira, D.H. de et al. 2018. Ileal digestibility of calcium and phosphorus in broilers fed diets with different phytases and Ca:available P ratios. Pesquisa Agropecuaria Brasileira. 53, 11 (Dec. 2018), 1222–1229. DOI:https://doi.org/10.1590/S1678-3921.pab2018.v53.26199.