View Item 
    •   WorldFish Repository Home
    • WorldFish Community
    • Sustainable aquaculture
    • View Item
    •   WorldFish Repository Home
    • WorldFish Community
    • Sustainable aquaculture
    • View Item
    • Login
    JavaScript is disabled for your browser. Some features of this site may not work without it.
    Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.12348/2500

    Response of two generations of selection to increased body weight in channel catfish, Ictalurus punctatus, compared to hybridization with blue catfish, I. furcatus, Males

    Thumbnail

    Abstract
    • Two generations of selection for increased body weight in Kansas (AU-KS-2) and Marion (AU-MS-2) lines of channel catfish, Ictalurus punctatus, resulted in a 12% and 11% increase in body weight at market size, respectively. The second generation of selection produced no improvement in growth, and there was a slight negative response to selection for body weights during the second generation. Cumulative realized h2 was 0.17"0.03 and 0.15"0.03 for AU-KS-2 and AU-MS-2, respectively, based on growth performance measured against a randomly bred, Kansas control for the two generations. Relative size differences were established by the time the fish reached 80 g, and these relative size differences were maintained the remainder of the experiment. Growth rate of the channel catfish ? blue catfish /, I. furcatus, hybrid was 35% faster than the Kansas control, and better than all three groups of channel catfish. The growth improvement through interspecific hybridization was three times better than through mass selection.
    • External link to download this item: https://doi.org/10.1300/J028v09n03_03
    Collections
    • Sustainable aquaculture [2234]
    Date
    • 1999
    Author
    • Dunham, R.A.
    • Brummett, R.E.
    AGROVOC Keywords
    • breeding; genetics
    Type
    • Journal Article
    Publisher
    • Taylor and Francis Ltd.
    Metadata
    Show full item record


    Copyright © 2018 WorldFish
    Contact Us | Send Feedback
    Powered by CodeObia
     

     

    Browse

    All of WorldFish RepositoryCommunities & CollectionsBy Issue DateAuthorsTitlesSubjectsThis CollectionBy Issue DateAuthorsTitlesSubjects

    My Account

    LoginRegister

    Copyright © 2018 WorldFish
    Contact Us | Send Feedback
    Powered by CodeObia