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    Utilization of minor cyprinids (Dawkinsia singhala and Puntius chola) from reservoirs as protein sources for feeds of juvenile koi carp (Cyprinus carpio)

    Authors:

    Rochana Weerasingha ,

    National Aquatic Resources Research and Development Agency, Crow Island, Colombo15, LK
    About Rochana
    Inland Aquatic Resources and Aquaculture Division
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    W. G. C. Umesha Soorasena,

    Uva Wellassa University, Badulla, LK
    About W. G. C. Umesha

    Department of Animal Science, Faculty of Animal Science and Export Agriculture

     

    Jacobi Carbons Lanka (Pvt) Ltd, " G" Estate, Wathugahamulla, Nattandiya

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    D. Ananda Athukorala

    National Aquatic Resources Research and Development Agency, Crow Island, Colombo15, LK
    About D. Ananda
    Inland Aquatic Resources and Aquaculture Division
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    Abstract

    Six-weeks of feeding trial was conducted to evaluate the effect of diets formulated using fish meal made from minor cyprinids (Dawkinsia singhala (DS) and Puntius chola (PC)) on the growth of koi carp (Cyprinus carpio) juveniles. Two isonitrogenous (crude protein -35 %) experimental diets with average lipid level (dry matter) of 8.96 ± 0.41 % (mean ± SD) were prepared containing 30.5% DS: 9% fish meal (FM) (T1); 33% PC: 8% FM (T2). Prima® tropical fish feed was used as the control (T3). Each treatment was followed by three replicates and nine cement tanks of 1.5 m ×1.2 m in size were used to conduct the study. Hundred juvenile koi fish with an average weight of 0.58±0.03 g (mean ± SD) were randomly allocated for each tank. At the end of feeding trial, no significant differences were found in weight gain, specific growth rate, feed conversion ratio, protein efficiency ratio and survival rate among fish fed 3 diets (P>0.05). The results indicated that two minor cyprinid species selected in the present study could be utilized as a protein supplement in juvenile koi carp feeds to replace high cost fish meals.

    Keywords: Carp feeds, Koi carps, Minor cyprinids, Ornamental fish, Small indigenous species
    How to Cite: Weerasingha, R., Soorasena, W.G.C.U. and Athukorala, D.A., 2017. Utilization of minor cyprinids (Dawkinsia singhala and Puntius chola) from reservoirs as protein sources for feeds of juvenile koi carp (Cyprinus carpio). Sri Lanka Journal of Aquatic Sciences, 22(1), pp.39–44. DOI: http://doi.org/10.4038/sljas.v22i1.7515
    Published on 01 Mar 2017.
    Peer Reviewed
    CC BY 4.0

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