ABSTRACT
This research aims to evaluate the supplementation of liquid smoke to mineral blocks on the kinetics and total gas production and Dry Matter Digestibility (DMD) and Organic Matter Digestibility (OMD) in vitro. Mineral blocks are feed additives that can be given to livestock with limited feed. The addition of liquid smoke to mineral blocks is expected to provide an antioxidant effect that improves the fermentation process and digestibility. One indicator of feed quality is the kinetics and total gas production produced during the fermentation process. Meanwhile, the higher the digestibility, the more feed that can be consumed. The experimental design was completely randomized with 3 treatments and 5 replications. The treatment was P1; control P2: Mineral Block Liquid Smoke 1% P3: Mineral block liquid smoke 2%. Data analysis used ANOVA and Duncan's advanced test. The parameters measured were gas production kinetics, DMD, and OMD. Based on research results, it is known that the addition of 1–2% liquid smoke mineral blocks can increase total gas production compared to without the addition of liquid smoke. The 1% addition of liquid smoke to the mineral block produces a total gas production value compared to other treatments. Meanwhile, the addition of 1% liquid smoke to mineral blocks significantly increases KCBO. Based on the research above, it was concluded that the supplementation level of liquid smoke added to mineral blocks was 1% and at the same time increased the quality of the basal diet.
