Four bulls fitted with ruminal cannula were used in a 4 x 4 Latin square designto evaluate the effects of different ruminally inoculated additives on the degradationkinetics of DM, CP, and NDF of corn silage (CS). The treatments were: controlCS incubated in rumen with no additive; LB - CS incubated in rumen inoculatedwith five grams of dehydrated and lyophilized ruminal and intestinal bacteria(Ruminobacter amylophilum: 3.0 x 1011 ufc/kg; Fibrobactersuccinogenes: 3.0 x 1011 ufc/kg; Succinovibrio dextrinsolvens:4.4 x 1011 ufc/kg; Bacillus cereus: 3.5 x 1011ufc/kg; Lactobacillus acidophilus: 3.5 x 1011 ufc/kg and Streptococcusfaecium: 3.5 x 1011 ufc/kg); CE - CS incubated in rumen inoculatedwith 15 grams of cellulolytic enzymes (xylanase; 10%); and SM - CS incubatedin rumen inoculated with three milligrams of sodium monensin. The LB and CEtreatments did not affect the potentially degradable "b" fraction of CS nutrients.However, the SM treatment reduced the DM "b" fraction (51.01%) and the potentialdegradability of CS (72.33%). Use of SM resulted in the greatest NDF indigestiblefraction reducing NDF disappearance after 48 hours of ruminal incubation. Itcan be concluded that the different additives did not improve the effectivedegradability of CS DM, CP, and NDF.
