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Abstract. This study aimed to improve the quality of Bali beef cattle through the application of liquid smoke technology as an antioxidant in the feed supplement fattening livestock groups in Tanete Riaja District, Barru Regency. The limitation of feed for a particular season in the maintenance of Bali cattle is the main problem to improve livestock performance, especially the quality of meat. Feeding in the form of Urea Coconut Water Liquid Smoke Multi-Nutrient Block (UCSMB) has been carried out in Bali cattle for 45 days of fattening. The study used 12 male Bali cattle aged 2-3 years through a completely randomized factorial 3 x 3 pattern where the first factor was the concentration of liquid smoke; 0, 10 and 20%, while the second factor is the length of maturation; 0, 7 and 14 days. Muscle Longissimus dorsi dissection after slaughter and was then observed the quality of meat regarding pH, shear force value, and organoleptic assessment, i.e. meat tenderness and juiciness. The results of the research showed that the quality of Bali beef increased with increasing concentration of liquid smoke in feed block and maturation times.