SUBSTITUTION OF FERMENTED DUCKWEED MEAL (Lemna Sp.) AS AN ALTERNATIVE PROTEIN SOURCE SOYBEAN MEAL IN SUPPORTING THE GROWTH OF TILAPIA (Oreochromis niloticus)

Tilapia (Oreochromis niloticus) is a freshwater fish commodity that has high economic value, widely cultivated and demand. However, the obstacle often experienced by farmers price of feed caused imported raw materials. Overcoming this can be done looking for alternative materials replace soybean meal flour such as fermented lemna flour. This research was conducted to study growth performance tilapia fed test using (Lemna sp.) substitution. The total treatment used 5 treatments 3 replications, with completely randomized design (CRD). Treatment A (0% TLF), B (25% C (50% D (75% E (100% TLF). Parameters observed were absolute weight gain, daily rate, protein retention, conversion, efficiency ratio, survival water quality. results showed TLF) gave best compared other treatments, where rate reached 7.11 g, (SGR) 3.39%, conversion (FCR) 2.22 retention 36.08%.