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  • Can roosters' head ornaments serve as a criterion for their selection as valuable reproducers?

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    Author(s) : Łukaszewicz, E.Bagińska, P.Lasoń, M.

    Author Affiliation : Division of Poultry Breeding, Institute of Animal Breeding, Wrocław University of Environmental and Life Sciences, Chełmońskiego 38 a, 51-630 Wrocław, Poland.

    Author Email : ewa.lukaszewicz@upwr.edu.pl

    Journal article : Annals of Animal Science 2017 Vol.17 No.3 pp.747-755 ref.33

    Abstract : It is widely practiced that before mating the roosters are selected as reproducers mainly on the basis of head ornaments appearance. Relationship between males secondary sexual traitssecondary sexual traitsSubject Category: Properties
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    (comb and wattleswattlesSubject Category: Anatomical and Morphological Structures
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    ) with testestestesSubject Category: Anatomical and Morphological Structures
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    size, as all of them are testosterone-dependent traits, were examined. Measurements of head ornaments and testes from two broiler breeder lines and two laying lines of chicken were correlated. The value of fluctuating asymmetryasymmetrySubject Category: Properties
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    (FA) of bilateral traits was also measured. Positive correlations were found for head ornaments and testes weight in one of broiler breeder lines. No correlations were found for males of laying lines. The degree of FA did not differ between lines, except for FA of wattle length, which was higher (P≤0.05) for one of the broiler lines. Results obtained indicated that head ornaments cannot be used as the only criterion for rooster selection as reproducers.

    ISSN : 1642-3402

    URL : http://www.izoo.krakow.pl/en/periodicals

    Record Number : 20173350699

    Publisher : National Research Institute of Animal Production

    Location of publication : Kraków

    Country of publication : Poland

    Language of text : English

    Indexing terms for this abstract:

    Organism descriptor(s) : birdsbirdsSubject Category: Organism Names
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    , fowlsfowlsSubject Category: Organism Names
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    Descriptor(s) : asymmetryasymmetrySubject Category: Properties
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    , broilersbroilersSubject Category: Organism Groups
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    , poultrypoultrySubject Category: Organism Groups
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    , reproductive organsreproductive organsSubject Category: Anatomical and Morphological Structures
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    , secondary sexual traitssecondary sexual traitsSubject Category: Properties
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    , testestestesSubject Category: Anatomical and Morphological Structures
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    , traitstraitsSubject Category: Properties
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    , wattleswattlesSubject Category: Anatomical and Morphological Structures
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    Identifier(s) : chickens, domesticated birds, secondary differences, testicles

    Broader term(s) : Gallus gallusgallus gallusSubject Category: Organism Names
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    , GallusgallusSubject Category: Organism Names
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    , PhasianidaephasianidaeSubject Category: Organism Names
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    , GalliformesgalliformesSubject Category: Organism Names
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    , birdsbirdsSubject Category: Organism Names
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    , vertebratesvertebratesSubject Category: Organism Names
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    , ChordatachordataSubject Category: Organism Names
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    , animalsanimalsSubject Category: Organism Names
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    , eukaryoteseukaryotesSubject Category: Organism Names
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