Biology and Life Sciences
Received: 18 Aug 2018 , Published: 23 August 2018
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|2||W. S. Malinda Harsha Kumara|
A 42-day feeding trial was conducted to evaluate the effect of diets formulated using fishmeal and chicken meat meal on the growth of ornamental koi (Cyprinus carpio) juveniles. Two isonitrogenous (CP 42%) experimental diets were prepared using imported chicken meat meal (T1) prepared from rejected chicken and imported fishmeal (T2). A commercial fish feed was used as control (T3). Ninety 28-days old mixed-sex koi juveniles were randomly allocated to nine glass tanks (45×30×30 cm3 each) at a stocking density of 10 fish per tank. Each treatment had three replicates. The results showed that fat content of T3 were lower (P<0.05) than that of T1 and T2 while ash content of T1 was lower (P<0.05) than T2. There was no differences (P>0.05) in weight gain (WG), specific growth rate (SGR), feed conversion ratio (FCR) and survival of fish fed with control and experimental diets. The chicken meat meal could be used as a protein supplement in koi feeds to replace high cost fishmeal. Hence, ornamental Cyprinus carpio could be raised with lowest cost on T1 than that of from commercial koi diet.
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