Valvasori E, Lucci C de S, Pires FL, Arcaro JRP, Arcaro Jr. I. Performance of calves fed with sorghum or sugar cane silages as only roughages. Braz. J. Vet. Res. Anim. Sci. 1998;35(5):229-232. doi:10.1590/S1413-95961998000500009