Hart, 1990. J. Anim. Sci., 68 (11): 3832-3842 Document reference Hart, S. P., 1990. Effects of altering the grain content of sorghum silage on its nutritive value. J. Anim. Sci., 68 (11): 3832-3842Web https://doi.org/10.2527/1990.68113832xCitation key Hart, 1990