Ninety (90) unsexed day-old, commercial broiler chicks were purchased from Sandhu Poultry farm, Bikaner. These chicks were weighed individually and uniformly distributed as 45 chicks in each of three groups. Each group was divided into three replicates with 15 chicks in each. The birds were offered feed and water ad-libitum. The chicks were fed with starter mash which contained crude protein 23% and metabolizable energy 2905 Kcal / kg up to three weeks of age. For next 3 weeks i.e. from 4 to 6 weeks of age with finisher mash which contained crude protein 20% and metabolizable energy 3120 Kcal/ kg. Group T1 (control group) was fed standard broiler mash. Group T2 was fed broiler mash + herbiotic FS @ 250 g/ ton of feed. Growth, feed consumption and feed conversion ratio of broilers in group T2 (broiler mash + herbiotic FS @ 250 g/ ton of feed) was better than that recorded on control diet. Findings of present study suggested that supplementation of herbiotic FS was effective in improving performance in broiler chickens.  

Keywords: Herbiotic FS; Broiler; Performance; Feed conversion ratio.