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Polymorphisms in eggshell organic matrix genes are associated with eggshell quality measurements in pedigree Rhode Island Red hens

Research output: Contribution to journalArticle

  • I. C. Dunn
  • N. T. Joseph
  • M. Bain
  • A. Edmond
  • P. W. Wilson
  • P. Milona
  • Y. Nys
  • J. Gautron
  • M. Schmutz
  • R. Preisinger
  • D. Waddington

Related Edinburgh Organisations

Original languageEnglish
Pages (from-to)110-114
Number of pages5
JournalAnimal Genetics
Issue number1
Publication statusPublished - Feb 2009


Novel and traditional eggshell quality measurements were made from up to 2000 commercial pedigree hens for a candidate gene association analysis with organic eggshell matrix genes: ovocleidin-116, osteopontin (SPP1), ovocalyxin-32 (RARRES1), ovotransferrin (LTF), ovalbumin and ovocalyxin-36, as well as key genes in the maintenance and function of the shell gland [estrogen receptor (ESR1) and carbonic anhydrase II (CAII)]. Associations were found for (i) ovalbumin with breaking strength and shell thickness; (ii) ovocleidin-116 with elastic modulus, shell thickness and egg shape; (iii) RARRES1 with mammillary layer thickness; (iv) ESR1 with dynamic stiffness; (v) SPP1 with fracture toughness and (vi) CAII with egg shape. The marker effects are as large as 17% of trait standard deviations and could be used to improve eggshell quality.

    Research areas

  • Animals, Chickens, Egg Proteins, Egg Shell, EGGS, Female, POLYMORPHISM

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