RANDEL, P. F.; VÉLEZ-SANTIAGO, J. Effects of Grazing Alone as Against Three Schedules of Supplementation from Breeding Age to First Parturition in Holstein Heifers. The Journal of Agriculture of the University of Puerto Rico, [S. l.], v. 69, n. 1, p. 69–79, 1985. DOI: 10.46429/jaupr.v69i1.7328. Disponível em: https://revistas.upr.edu/index.php/jaupr/article/view/7328. Acesso em: 7 jun. 2023.