Whole-flint corn grain or tropical grass hay free choice in the diet of dairy calves - Toledo, Ariany Faria de; Silva, Ana Paula da; Poczynek, Milaine; Coelho, Marina Gavanski; Silva, Marcos Donizete da; Polizel, Daniel Montanher; Reis, Maria Eduarda; Virginio Júnior, Gercino Ferreira; Millen, D. D; Bittar, Carla Maris Machado (Journal of Dairy Science, 2020)