TY - JOUR ID - 114756 TI - The effect of dietary lipid level on the growth of kutum fry (Rutilus frisii kutum) JO - Iranian Journal of Fisheries Sciences JA - IJFS LA - en SN - 1562-2916 AU - Haghighi, D.T. AU - Saad, C.R. AU - Hosseinzadeh Sahafi, H. AU - Mansouri, D. AD - Y1 - 2009 PY - 2009 VL - 8 IS - 1 SP - 13 EP - 24 KW - Rutilus frisii kutum KW - Dietary lipid KW - Nutritional performance KW - Feed Conversion Ratio DO - 10.22092/ijfs.2018.114756 N2 - The study was conducted with a completely randomized design consisting of four treatments in triplicates. Experimental diets were formulated to contain four different lipid levels (8, 10, 12 and 14%) at constant protein level (46.8%) and different gross energy of 4314, 4417, 4519 and 4622kcal/kg, respectively. Kutum fry (average weight, 203±4mg) were randomly assigned and distributed at a density of 2 fish/l into twelve 80 liter fiberglass tanks equipped with a tap-freshwater system and water temperature of 22-24oC. Fish were fed the experimental diets thrice a day at 10% of body weight for 81 days. Statistical analysis indicated that fish fed the lowest lipid level of 8% showed significant differences (p<0.05) with other treatments. Fish growth, survival, protein and energy retention showed a marked decrease with an increase of dietary lipid level. Crude lipid of carcass composition increased, but ash and moisture decreased with an increase of lipid levels. UR - https://jifro.areeo.ac.ir/article_114756.html L1 - https://jifro.areeo.ac.ir/article_114756_8873858d666277e29fdb10976fb8c8d3.pdf ER -