In order to reduce the dependence of the ensiling process on epiphytic lactic acid bacteria (LAB) and on chemical additives, inoculants comprising homofermentative bacteria such as Lactobacillus plantarum, Enterococcus faecium, and Pediococcus species, are often used to control the ensiling fermentation by rapid production of lactic acid and the consequent decrease in pH and improved silage preservation with minimal fermentation losses (Filya, 2004; Muck & Kung,1997). The objective of this study was to determine the effect of microbial inoculation on the fermentation of corn silage treated with Lactobacillus plantarum and Propionibacterium acidipropionici silage inoculants and the subsequent effect on nutritive value and performance by lactating beef cattle.