This study was conducted to determine the effects of roughages types of R(rice straw), RAS silage[apple pomace 40% + rice straw 60% + sesame oil meal 15%(DM 15% addition of apple pomace + rice straw)] and RAC silage[apple pomace 40% + rice straw 60% + cage layer excreta 30%(DM 30% addition of apple pomace + rice straw)] on daily gain, eating behavior, economical efficiency and carcass characteristics of Korean Native Cattle. The results obtained were as follows: Body weight gain was high in the order of RAC silage $gt; RAS silage $gt; R treatment. Daily gain was the highest at RAC silage treatment as 1.36㎏, but R treatment was the lowest as 1.27㎏. Eating time, ruminating time and bolus number were high in the order of R $gt; RAS silage $gt; RAC silage treatment at 7 months(P$lt;0.05, 0.01), and chewing number was high in the order of R $gt; RAC silage $gt; RAS silage treatment(P$lt;0.05). Eating time, ruminating time, blows number, urinating number and excreting number were lower RAC silage treatment than R and RAS silage treatment at 11 months(P$lt;0.01). Eating time and ruminating time at 15 months were higher RAS silage and RAC silage treatment than R treatment(P$lt;0.01), but bolus number, chewing number urinating number and excreting number were not significantly affected by the treatments. Net income according to the treatments was high in the order of RAC silage(476,498 won) $gt; RAS silage(447,139 won) $gt; R treatment(304,332 won). As mentioned above the results, RAS and RAC silage feeding were highly evaluated about improvement of body weight gain, raughage cost and quantity grade for Korean native cattle.