Jin Choi and Zahra Aminikhoei and Yi-Oh Kim and Sang-Min Lee
Effects of Dietary Protein and Lipid Levels on Growth and Body Composition of Juvenile Fancy Carp, Cyprinus carpio var. Koi
31 - 37
2015
9
1
International Journal of Bioengineering and Life Sciences
https://publications.waset.org/pdf/10000311
https://publications.waset.org/vol/97
World Academy of Science, Engineering and Technology
A feeding experiment was conducted to determine the
optimum dietary protein and lipid levels for juvenile fancy carp. Eight
experimental diets were formulated to contain four protein levels (200,
300, 400 and 500 g kg1) with two lipid levels (70 and 140 g kg1).
Triplicate groups of fish (initial weight, 12.1±0.2 g fish1) were
handfed the diets to apparent satiation for 8 weeks. Fish growth
performance, feed utilization and feed intake were significantly
(P<0.0001) affected by dietary protein level, but not by dietary lipid
level (P>0.05). Weight gain and feed efficiency ratio tended to
increase as dietary protein level increased up to 400 and 500 g kg1,
respectively. Daily feed intake of fish decreased with increasing
dietary protein level and that of fish fed diet contained 500 g kg1
protein was significantly lower than other fish groups. The protein
efficiency ratio of fish fed 400 and 500 g kg1 protein was lower than
that of fish fed 200 and 300 g kg1 protein. Moisture, crude protein and
crude lipid contents of muscle and liver were significantly affected by
dietary protein, but not by dietary lipid level (P>0.05). The increase in
dietary lipid level resulted in an increase in linoleic acid in liver and
muscle paralleled with a decrease in n3 highly unsaturated fatty acids
content in muscle of fish. In considering these results, it was concluded
that the diet containing 400 g kg1 protein with 70 g kg1 lipid level is
optimal for growth and efficient feed utilization of juvenile fancy carp.
Open Science Index 97, 2015