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Heritability of egg production in laying hens under cumulative, multitrait and repeated measurement animal models

Author

Listed:
  • A. Wolc

    (Department of Genetics and Animal Breeding, Agricultural University of Poznan, Poland)

  • M. Lisowski

    (Poultry Research Branch at Zakrzewo, National Research Institute of Animal Production, Poland)

  • T. Szwaczkowski

    (Department of Genetics and Animal Breeding, Agricultural University of Poznan, Poland)

Abstract

Six generations of three layer lines (13 770 recorded individuals of A22 line, 13 950 of A88, 9 351 of K66) were used to estimate genetic effects on egg production under cumulative, multitrait and repeatability models. Variance components were estimated by the AI-REML algorithm. The heritability of cumulative records ranged from 0.08 to 0.1. For the repeated measurements model the following genetic parameters were obtained: heritability 0.02-0.03, repeatability 0.04-0.38. The first two months of egg production were found to differ from the other periods: heritability was relatively high (h2 > 0.35) and low or negative correlations with the other periods were found. Heritability was low (h2 < 0.1) from the peak production until the end of recording and the consecutive periods were highly correlated. Further studies on monthly records are suggested.

Suggested Citation

  • A. Wolc & M. Lisowski & T. Szwaczkowski, 2007. "Heritability of egg production in laying hens under cumulative, multitrait and repeated measurement animal models," Czech Journal of Animal Science, Czech Academy of Agricultural Sciences, vol. 52(8), pages 254-260.
    • Handle: RePEc:caa:jnlcjs:v:52:y:2007:i:8:id:2282-cjas
    DOI: 10.17221/2282-CJAS
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    Citations

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    Cited by:

    1. H. Krejčová & J. Přibyl & J. Přibylová & M. Štípková & N. Mielenz, 2008. "Genetic evaluation of daily gains of dual-purpose bulls using a random regression model," Czech Journal of Animal Science, Czech Academy of Agricultural Sciences, vol. 53(6), pages 227-237.
    2. J. Baumgartner & Z. Končeková & J. Benková & D. Peškovičová & J. Simenovová & J. Csuka, 2008. "Changes in egg quality traits associated with long-term selection for lower yolk cholesterol content in Japanese quail," Czech Journal of Animal Science, Czech Academy of Agricultural Sciences, vol. 53(3), pages 119-127.

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