Rising feed costs threaten the sustainability of pig farming in Nagaland, India, where the indigenous Tenyi Vo pig is a vital livelihood source. This study evaluated the effects of jackfruit (Artocarpus heterophyllus) powder supplementation on growth performance and economics in Tenyi Vo pigs. Twenty weaner piglets (60 days old) were assigned to four groups: T1 (control, concentrate feed), T2 (25 g/kg jackfruit powder), T3 (50 g/kg), and T4 (75 g/kg) for nine weeks. Growth parameters included body weight, weight gain, and feed intake; economic metrics included production costs, net profit, and benefit-cost ratio (BCR). The T4 group achieved the highest final body weight (8.80 kg), weekly weight gain (1.16 kg/pig/week), and net profit (Rs. 1910.6/piglet) with a BCR of 1.58 (P<0.05). Feed intake was highest in T3 (10.47 kg total). Jackfruit powder at 75 g/kg significantly enhances growth and profitability, offering a cost-effective feed strategy for smallholder farmers.