This study investigates the efficacy of Foeniculum vulgare seeds powder on feed intake and feed conversion ratio in broiler chickens over a period of five weeks. The results indicated that the highest level of supplementation (750 gm per 50 kg diet) significantly improved growth performance, while the control group showed the least efficacy. The findings suggest that Foeniculum vulgare seeds can enhance the overall performance and well-being of broiler chickens, making it a recommended additive in poultry production.