This experiment was conducted to evaluate the effects of replacing fish waste silage (FWS) for soybean meal in diets on growth performance and meat quality in broiler chickens. Fish waste (FW) was fermented with molasses and Lactobacillus plantarum and Aspergillus oryzae for 15 days. A total of 240-day-old male Cobb 500 broiler chickens were used in a 42-d experiment in which the birds were randomly allotted to one of the 5 dietary treatments (containing 0, 30, 60, 90, and 120 g kg-1 FWS) in a completely randomized design. Results indicated that the fermentation process significantly reduced pH and ether extract, while increased crude protein content and lactic acid bacteria count in FW. The use of FWS significantly improved daily weight gain and feed conversion ratio of broilers. The amount of thiobarbiturate reducing substances and lipid content in chicken’s meat fed diet containing FWS was significantly lower than group fed control diet. CONCLUSION: In conclusion, microbial fermentation process is effective on improving nutritive values of FW. Also, feeding of FWS up to 120 g kg-1 improve performance and meat quality of birds and can be used as a suitable protein source in broiler chickens diet

Keywords