The rising cost of imported feedstuffs in poultry production is a significant concern for producers. Utilising local resources like Asystasia gangetica, a common perennial weed with high nutritional value, offers a promising alternative. Ducks can better digest high-fibre diets than chickens, making them ideal for this study, which evaluated the effects of pelleted diets containing various levels of A. gangetica on feed intake, growth performance, and meat quality in Muscovy ducks. Sixty 2-week-old ducks were divided into four dietary groups: 0% (control), 5% (T1S), 10% (T2S), and 20% (T3S) during the starter phase, and 0% (control), 10% (T1G), 20% (T2G), and 30% (T3G) during the grower phase with three replicates per group (five birds per replicate). Ducks on T3S and T3G diets had higher crude fibre and ash intakes, while those on the control diet consumed more crude protein (CP) and ether extract. Overall body weight, weight gain, and feed conversion ratio were better (p