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Genome mapping for quantitative trait loci controlling growth-, egg-, and meat-related traits

Research Project

Project/Area Number 16380189
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Applied animal science
Research InstitutionHiroshima University

Principal Investigator

TSUDZUKI Masaoki  Hiroshima University, Graduate School of Biosphere Science, Professor, 大学院生物圏科学研究科, 教授 (70212058)

Co-Investigator(Kenkyū-buntansha) ISHIKAWA Akira  Nagoya University, Graduate School of Bioagricultural Sciences, Associate Professor, 大学院生命農学研究科, 助教授 (20211724)
Project Period (FY) 2004 – 2006
Project Status Completed (Fiscal Year 2006)
Budget Amount *help
¥15,600,000 (Direct Cost: ¥15,600,000)
Fiscal Year 2006: ¥4,700,000 (Direct Cost: ¥4,700,000)
Fiscal Year 2005: ¥5,400,000 (Direct Cost: ¥5,400,000)
Fiscal Year 2004: ¥5,500,000 (Direct Cost: ¥5,500,000)
Keywordschickens / quantitative traits / QTL analysis / resource family / genome mapping / microsatellite DNA / Japanese Large Game / White Leghorn / 家系 / DNAマーカー / オオシャモ
Research Abstract

Quantitative trait locus (QTL) analyses were performed to map QTLs controlling growth-related traits (e.g., body weight, shank length), egg-related traits (e.g., egg weight, egg production rate), and meat-related traits (e.g., pH value, meat color) in an F2 resource family developed from a cross of the large-sized, native Japanese cockfighting breed, Oh-Shamo (Japanese Large Game) and the White Leghorn breed of chickens. All in all, 37, 33, and 29 traits were analysed in growth-, egg-, and meat-related traits, respectively. Interval mapping revealed many significant QTLs for many traits as shown below. (1) Growth-related traits: A QTL for shank length at 14 and 16 weeks of age was found on chromosome 4. Three QTLs for shank length at 20 weeks of age were detected on chromosomes 1, 4, and 24. In addition, a QTL controlling 20-week body weight and carcass weight was found on chromosome 4. (2) Egg-related traits: A QTL for egg weight at 300 days of age was detected on chromosome 4. Two QTLs for egg production rate at 400 days of age were identified on chromosomes 3 and 4. A QTL for L^* value of eggshell color was discovered on chromosome 3. Furthermore, two QTLs were found on chromosomes 4 and 11 for egg yolk weight at both 300 and 400 days of age. (3) Meat-related traits: A QTL was identified on chromosomes 4, 13, 3, and 1, respectively, for the pH value of the leg muscle, b^* value of the leg muscle color, b^* value of the deep breast muscle color, and the myoglobin contens in the deep breast muscle. It seems that the discovery of the QTLs for these meat-related traits and the shank length trait mentioned above is the first discovery in the world.

Report

(4 results)
  • 2006 Annual Research Report   Final Research Report Summary
  • 2005 Annual Research Report
  • 2004 Annual Research Report
  • Research Products

    (3 results)

All 2007

All Journal Article (3 results)

  • [Journal Article] Identification of quantitative trait loci affecting shank length, body weight and carcass weight from the Japanese cockfighting chicken breed, Oh-Shamo (Japanese Large Game)2007

    • Author(s)
      Tsudzuki, Masaoki
    • Journal Title

      Cytogenetic and Genome Research (in press)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Identification of quantitative trait loci affecting shank length, body weight and carcass weight from the Japanese cockfighting chicken breed, Oh-Shamo (Japanese Large Game)2007

    • Author(s)
      Tsudzuki M., Onitsuka S., Akiyama R., Iwamizu M., Goto N., Nishibori M., Takahashi H., Ishikawa A.
    • Journal Title

      Cytogenetic and Genome Research (special issue entitled "Avian Genomics in Evolution, Agriculture and Health") (in press)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Identification of quantitative trait loci affecting shank Length, body weight and carcass weight from the Japanese cockfighting chicken breed, Oh-Shamo (Japanese Large Game)2007

    • Author(s)
      Tsudzuki, Masaoki
    • Journal Title

      Cytogenetics and Genome Research (in press)

    • Related Report
      2006 Annual Research Report

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Published: 2004-04-01   Modified: 2016-04-21  

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