Vellasco, C.R. et al. 2016. LEVELS OF CALCIUM AND CALCIUM: PHOSPHORUS RATIO IN DIETS FOR LAIYNG HENS AGED 24 TO 40 WEEKS. Brazilian Animal Science/ Ciência Animal Brasileira. 17, 2 (Apr. 2016), 206–216. DOI:https://doi.org/10.1590/1089-6891v17i226916.