[en] The aim of this study was to evaluate the effects of fattening pig diets containing rice distiller’s by-product (RDP) on growth performance, carcass characteristics and meat quality. A total of 24 castrated male crossbred pigs ♂Duroc ×♀(Landrace × Yorkshire) were used for the experiment. Pigs were divided randomly by weight and litter into 3 diets, with 4 replications of 2 pigs in each pen. Pigs were fed one of 3 diets including DAR0 (control), DAR15 (15% RDP in dry matter) and DAR30 (30% RDP in dry matter) during 8 weeks. The results showed that the diets with RDP tended to affect average daily gain (P=0.09) and feed conversion ratio (P=0.08), while feed cost was decreased (P<0.001). Carcass traits was not significantly different between the diets, however back fat thickness was increased by RDP levels (P=0.03). Drip loss of Longissimus dorsi muscle at 24 and 48 hours was increased (P<0.05), whereas there were not effect on pH value and meat color at 45 min, 24 and 48 hours postmortem. Muscle lipid content was increased (P<0.01), whereas protein content was not influenced by RDP in diets. This suggests that using diet with 30% RDP for fattening pigs can improve lipid content of Longissimus dorsi muscle and reduce feed costs while not affecting growth performance and meat quality.