Physiological performance and productivity of quail layer period supplemented with coconut shell liquid smoke grade 3

Coconut shell liquid smoke (CSLS) contains flavonoids, tannins, and saponins. It has antioxidant characteristics that can help quail to overcome oxidative stress. This study aimed to analyze the effect of coconut shell liquid smoke grade 3 on the physiological performance and productivity of the quail layer period. The research method used a completely randomized design consisting of 5 treatment levels with 3 replications, namely P0 (control), P1 (0.25 mL/L CSLS), P2 (0.50 mL/L CSLS), P3 (0.75 mL/L CSLS) and P4 (1 mL/L CSLS). Variables measured included physiological performance (hematology, superoxide dismutase, malondialdehyde and heterophil/lymphocyte ratio), productivity (water intake, feed intake, egg production, egg mass, and feed conversion ratio), and physical egg quality (egg weight, thick egg white height and percentage of eggshell). The results showed that supplementing CSLS had no significant effect (P > 0.05) on productivity and physical egg quality. The optimum FCR value was obtained at P1 (3.35). Hematology and stress indicators in P1 revealed that quail supplemented with CSLS can lower oxidative stress. It was concluded that CSLS could reduce oxidative stress in the quail layer period. It was found that the optimum stress indicators and FCR were obtained at a dose of 0.25 mL/L CSLS (P1).