Application of Fermented Rice Bran Using Lactobacillus sp. in Artificial Feed For Survival Rate and FCR of Tilapia (Oreochromis niloticus)

Rice bran is the result of the process of milling rice plants into rice, but rice bran has not been utilized properly in the Sidrap area. Feeding with the addition of fermented rice bran using Lactobacillus sp. is expected to increase the use of feed in tilapia aquaculture. This research aims to realize the fermentation of rice bran on the survival parameters and feed conversion ratio (fcr) of tilapia. This research used a completely randomized design with three replications and four treatments, namely (A) 10% dose of rice bran in feed, (B) 15% dose of rice bran in feed, (C) 20% dose of rice bran in feed, and (D) control. feed. The size of the tilapia used is 1.5 g / fish with a density of 20 individuals / 85 L of freshwater. The number of feeding four times a day and given a test feed of 5% of the bodyweight of the fish. The results showed that the bran flour was fermented using Lactobacillus sp. Significantly different in the survival rate and the ratio of tilapia feed conversion and water quality during the study is suitable for use in tilapia fish maintenance. The highest value resulting from the addition of fermented rice bran 15% (18.33) and 20% (19.33) for survival, while the lowest for control (16.67) and feed conversion ratio showed the best results with the provision of fermented rice bran 20 % (3.03).