Adeola, 1996. J. Anim. Sci., 74 (10): 2411-2419 Document reference Adeola, O., 1996. Bioavailability of tryptophan in soybean meal for 10-kg pigs using slope-ratio assay. J. Anim. Sci., 74 (10): 2411-2419Web http://www.journalofanimalscience.org/content/74/10/2411Citation key Adeola, 1996