High-concentrate diets with fibrous by-products for feedlot Nellore heifers oleh ERIC H.C.B. VAN CLEEF, PRISCILA S.N. DE OLIVEIRA, ROSEMARY LAÍS GALATI, DANIEL S. FERREIRA, VIVIANE C. SANTOS, ANTÔNIO CARLOS HOMEM JUNIOR, SERGIO ANTÔNIO G. PEREIRA JUNIOR, RENÉ MAURICIO P. PARDO, JANE MARIA B. EZEQUIEL