Kiki HAETAMI, Abun, Junianto, Iskandar, and Rita ROSTIKA
Faculty of Fisheries and Marine Science, Padjadjaran University, Jalan Raya
Bandung-Sumedang KM. 21, 45363, Indonesia, (phone) +6222 7798241, (fax)
+6222 7798212.
Faculty of Animal Husbandry, Padjadjaran University, Jalan Raya BandungSumedang
KM. 21, 45363, Sumedang-West Java, Indonesia, (phone) +6222
7798241, (fax) +6222 7798212.
Corresponding author email: abunhasbunap@gmail.com;
abun_hasbuna.fapet @ yahoo.co.id

ABSTRACT
Nutritional Balance in feed is very important in order to improve the efficiency of feed. The use of oil in omnivore fish can serve as a spare protein energy provider in addition to carbohydrates. Efforts to replace some of the protein functions as an energy source, by feed oil supplements from coconut flesh combined with candlenuts, with or without added of trace element Se, thus improving the optimum use of protein in freshwater fish. This study aims to determine the phsiological and biological features of feed formula (low protein 28%) with fat and selenium supplementation and to get the ratio and type of fat (saturated and unsaturated) compared with high protein (32%), which can increase feed efficiency of Nile tilapia (Oreochromis niloticus) fingerling phase. The preparation stage found that coconut fat supplements were dominated by saturated fatty acid as lauric (42.67%), whereas candlenut fats contained unsaturated fatty acids, linoleic (34.4%) and oleic (48.99%) so the use of candlenut oil (0%, 2% and 4%) can increase the ratio of unsaturated fatty acids in feed. Treatments consist 6×3 with Completely Randomized Design by ratio of unsaturated fat and saturated fat supplement Se. R1 low protein feed without supplements; R2 and R3 low protein feed containing ratio of unsaturated-saturated fat 1:1 (mixture of oil) without and with addition of Se, and then R4 1:2 (coconut oil); 2:1 (candlenut oil) and R6 high protein without of fat supplements 2:3, produces normal physiological hematologic and digestive) images for tilapia health. The main research (feeding trial) showed that low protein feed containing ratio of unsaturated-saturated fat 1:1 (coconut and candlenut mixed-oil were 2% of each) with the addition of selenium 0.15 ppm, was the best feed efficiency in tilapia ranged from 50.14-57.93% and protein efficiency ratio 1.72 – 2.06.
Key words: Coconut and candlenut oil, selenium, feed efficiency, nile tilapia.