Publication Date:
2021-07-16
Description:
Experiments were conducted to evaluate the effects of different dietary levels of protein (%30, %35, %40, %45), fat (%8, %12, %16, %20) and total energy (3500,4000,4500,5000 kcal/kg) on growth of fingerling Roach (Rutilus rutilus caspicus knipowitschi ) in four treatments with triplicates. The crude protein of experiment, fish averaged 2.60 gr stoking density of 25 fish/tank in a during of 57 days, the crude fat of experiment, averaged 5.30 gr stoking density of 15 fish/tank in a during of 67 days and the gross energy of experiment, averaged 5.30 gr stoking density of 25 fish/tank in a during of 57 days which reared into 100L-fiber glass tanks. At the end of each experiments, growth average parameters, such as weight gain(%), specific growth rate, food conversion ratio, condition factor and survival (%) were not significantly different among all treatments (P〉0/05) but protein efficiency ratio showed in fish fed of %30 and %35 protein at levels significantly different with another treatments (P〈0/05). In all of experimentes, significant difference was found whole-body protein, lipid contents of fish fed the different dietary protein, lipid and energy levels indicated that significant difference among of treatments. As regards the economics of feeding and effective protein utilization, the dietary containing %30, %16 fat levels and total energy 5000 kcal/kg would be suitable to growth roach fingerling.
Keywords:
Aquaculture
;
Iran
;
Caspian Sea
;
Protein
;
Fat
;
Energy
;
Growgh
;
Fish roach
;
Rutilus rutilus caspicus knipowitschi
;
Fingerlings
;
Survival
;
Lipid
;
Feeding
Repository Name:
AquaDocs
Type:
monograph
Format:
application/pdf
Format:
application/pdf
Format:
58
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