If the ABW is 105g; Stocking Density is 1, 000 pcs tilapia; feeding rate is 10% DFR = 105g x .10 x 1, 000 = 10, 500g or 10.5 kgs of feeds (10.5 kgs feeds can be divided into 3 rations which will be fed morning, midday and afternoon) Feed Conservation Ratio - ratio of feeds given to the gain weight FCR = amount of feed consumed weight of fish