Formulated Feed for Rainbow Trout (Oncorhynchus mykiss) The Beginning of Growing Phase

Received: 18-02-2013

Accepted: 15-06-2013

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Issue: Vol. 11 No. 3 (2013)

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CHĂN NUÔI – THÚ Y – THỦY SẢN

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Thu, T., & Tinh, T. (2024). Formulated Feed for Rainbow Trout (Oncorhynchus mykiss) The Beginning of Growing Phase. Vietnam Journal of Agricultural Sciences, 11(3), 310–317. http://testtapchi.vnua.edu.vn/index.php/vjasvn/article/view/1616

Formulated Feed for Rainbow Trout (Oncorhynchus mykiss) The Beginning of Growing Phase

Tran Thi Nang Thu (*) 1 , Tran Thi Tinh 1

  • 1 Trường Đại học Nông nghiệp Hà Nội

    • Keywords

    Oncorhynchusmykiss, rainbowtrout, growing phase, feed formulation

    Abstract


    Formulated feed for rainbow trout at the beginning of growing phase from10g/fishto120g/fishwas conducted incoldwateraquaculture researchcenterin Sapa-Lao Cai. The experiment wasarrangedwithfivedifferentfeedincludingan imported feed from Finland andfourlocal formulated feed(TACB1, TACB2, TACB3, TACB4) containing46% proteinand18% lipid. Fishmealincorporationleveldecreased from62.27% to 52.75% andtheincorporationlevelofplant ingredientsincreases from14.66% to 38.4% in four local formulated feed. After75 daysofexperiment,resultsshowedthatthe growth performanceofrainbow troutarerelativelyhighintheexperimentalfeeds(from 1.43 to 1.47 g/fish/day), survivalrate high(98.0% -99.3%), lowfeedconversionratio(1.41 to 1.44). Therelative gutlength of fish wasproportional to theincorporationlevelofplant ingredients in experimental feed. The growth rate, feedconversionratioand survival rateof fish fed TACB3using56.12% fishmealand25.72% plant ingredientwere similar to fish fedFinlandfeed. The use of TACB3 can be reduce the production cost of 18% in comparison to imported feed, thus TACB3 can beusedasformulatedfeedforrainbowtrout at the beginning of growing phase.

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