There are about 140 species of the genus Pennisetum L. (Rich) in the family Poaceae (Haroun, 2010). Comprising such important species are elephant grass (Pennisetum purpureum Schumach) and pearl millet (Pennisetum glaucum (L.) R. Br.) (Brunken, 1977; Kativu and Mithen, 1987; Kellogg, 2000). Pearl millet, a diploid (2n = 14) dual-purpose annual species of this genus, is used for food (grain) by humans and as feed (forage or fodder) for livestock. The association of pearl millet with high quality forage earns it greater palatability and acceptability by livestock. Elephant grass, on the other hand, is a tetra