Supplementation of herbal immunomodulators on the performance and cost economics of Japanese quails (Coutrinix coturnix japanica) under heat stress

The aim of the present study was to investigate the effect of different herbal immune modulators on the performance and cost economics of broilers. For this, 120 day old Japanese quails (Coturnix coturnix japonica) were randomly divided into four treatment groups with six replicates of five birds each. The experimental design consisted of; T1: control diet, T2: Stressroak liquid, T3: Stress check, T4: Geriforte liquid. The results indicated that cumulative body weight gains were significantly (P<0.05) increased by supplementation of herbal immunomodulators during starter (0–3 weeks) and finisher phases (3–5 weeks) but no significant difference was observed in feed intake during these periods. All the herbal products significantly improved feed conversion ratio and yielded higher returns over feed cost when compared to control. Dietary supplementation of Stressroak herbal liquid, Stress check and Geoforte liquid containing natural vitamin C with bioflavonoids, vitamin E and selenium significantly (P<0.05) improved the performance of quails under summer stress.