Open AccessPENGARUH PENAMBAHAN GLISEROL PADA PAKAN TERHADAP PERTUMBUHAN DAN KELANGSUNGAN HIDUP IKAN NILA (Oreochromis niloticus)
Author(s) -
Lusi Herawati Suryaningrum,
Mulyasari Mulyasari,
Reza Samsudin
Publication year - 2017
Publication title -
berita biologi/berita biologi
Language(s) - English
Resource type - Journals
eISSN - 2337-8751
pISSN - 0126-1754
DOI - 10.14203/beritabiologi.v16i2.2833
Subject(s) - nile tilapia , oreochromis , zoology , glycerol , biology , feed conversion ratio , weight gain , fish <actinopterygii> , body weight , fishery , biochemistry , endocrinology
The aim of this research was to determine the optimum percentage of glycerol addition into the diets of Nile Tilapia (Oreochromis niloticus) on growth performance, feed convertion ratio, and survival rate. The research was conducted using 15 aquaria with the size of 60 x 50 x 45 cm3, each containing 25 O. niloticus with average initial weight of 4.63 ± 0.15 g. The experiment was conducted using a complete random design with five treatments and three replications. Isonitrogenous (31%) and isocaloric (17 MJ.kg-1) diets were provided for 60 days of rearing period. Five diets were formulated with glycerol content of 0% (G0); 5% (G5); 10% (G10); 15% (G15), and 20% (G20). Fish were fed twice daily with experimental diet at satiation level. The result showed that addition of 10% glycerol in the diet (G10) presented the highest values for weight gain (105.85 ± 0.40%), specific growth rate (3.44 ± 0.01%), protein retention (27.75 ± 0.02%), protein efficiency ratio (2.53 ± 0.15%), lipid retention (60.44 ± 0.03%), and feed convertion ratio (1.59 ± 0.01%) (P 0.05). Therefore, addition of 10% glycerol into the diet gave a significant increase on growth performance and feed convertion ratio without adverse effect on survival rate of Nile Tilapia.