The present work was aimed at knowing the effect of polyherbal extracts {neem(N), nishynda(N), tulsi(T) and turmeric(T) i.e. NNTT} as growth promoter at the (i) growth performance of broiler and on the (ii) dressing percentage, relative weight of heart, gizzard, liver, spleen and pancreas of the broiler. A total of 50 day-old broiler chicks were purchased from kazi farms limited and randomly divided in two groups, viz., A and B. Group A served as control and was without any supplementation in drinking water. Whereas group B were supplemented with 1ml of polyherbal (NNTT) extracts per liter drinking water. Live body weight was recorded at on 7th day and the final weight was recorded on 42nd day, total feed consumption, feed efficiency and blood parameters of birds were recorded on 21st day and on 42nd day. The treatment groups i.e. B (1700