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2005 Fiscal Year Final Research Report Summary

Selection of sub-populations to preserve with high priorities for the conservation of genetic diversity in the Japanese Black cattle population

Research Project

Project/Area Number 16580234
Research Category

Grant-in-Aid for Scientific Research (C)

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

Principal Investigator

NOMURA Tetsuro  Kyoto Sangyo University, Faculty of Engineering, Professor, 工学部, 教授 (50189437)

Project Period (FY) 2004 – 2005
KeywordsJapanese Black cattle / genetic diversity / genetic resource / strain / sub-population / core set method / Weitzman's method
Research Abstract

Since liberalization of beef import restriction in 1991, domestic production of high-quality beef has received more emphasis in Japan, and meat quality (especially, ‘beef marbling') of Japanese Black cattle has been remarkably improved by the genetic evaluation system of breeding animals. However, due to the intensive use of a few sires with high genetic merit of beef marbling, drastic decline of genetic diversity is an increasing problem of this breed. In the present study, the sub-populations (i.e., local strains) to preserve with high priorities were assessed to conserve the genetic diversity in the Japanese Black population. Two different methods, i.e., the Weitzman's method and the core set method, were applied to the pedigree and body measurement data obtained from 25 major local populations. The results from the two methods strongly suggest that the five traditional populations in Chugoku district (Hyogo, Tottori, Okayama, Hiroshima and Shimane) and the three regional populations in Kyusyu district (Oita, Miyazaki and Kagoshima) should be preserved with high priorities. It has been proposed that rotational mating system with several sire lines could be efficient for the conservation of genetic diversity in the Japanese Black population. The result obtained from this study is expected to give basic information for the application of the rotational mating.

  • Research Products

    (16 results)

All 2005 2004

All Journal Article (16 results)

  • [Journal Article] Joint effect of selection, linkage and partial inbreeding on additive genetic variance in an infinite population.2005

    • Author(s)
      T.Nomura
    • Journal Title

      Biometrical Journal 47

      Pages: 527-540

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Effective size of populations under partial inbreeding and selection on a set of linked additive genes.2005

    • Author(s)
      T.Nomura
    • Journal Title

      Biometrical Journal 47

      Pages: 563-584

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Prediction of inbreeding in commercial females maintained by rotational mating with partially isolated sire lines.2005

    • Author(s)
      T.Honda
    • Journal Title

      Journal of Animal Breeding and Genetics 122

      Pages: 340-348

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Conservation of genetic diversity in the Japanese Black cattle population by the construction of partially isolated lines.2005

    • Author(s)
      T.Honda
    • Journal Title

      Journal of Animal Breeding and Genetics 122

      Pages: 188-194

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Methods for minimizing the loss of genetic diversity in conserved populations with overlapping generations.2005

    • Author(s)
      T.Nomura
    • Journal Title

      Conservation Genetics 6

      Pages: 655-663

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Effective population size under random mating with a finite number of mating.2005

    • Author(s)
      T.Nomura
    • Journal Title

      Generics 171

      Pages: 1441-1442

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Developments in prediction theories of the effective size of populations under selection.2005

    • Author(s)
      T.Nomura
    • Journal Title

      Animal Science Journal 76

      Pages: 87-96

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Prediction of inbreeding in commercial females maintained by rotational mating with partially isolated sire lines.2005

    • Author(s)
      T.Honda, T.Nomura, F.Mukai
    • Journal Title

      Journal of Animal Breeding and Genetics 122

      Pages: 340-348

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Conservation of genetic diversity in the Japanese Black cattle population by the construction of partially isolated lines.2005

    • Author(s)
      T.Honda, T.Nomura, M.Mukai
    • Journal Title

      Journal of Animal Breeding and Genetics 122

      Pages: 188-194

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Effective population size under random mating with a finite number of matings.2005

    • Author(s)
      T.Nomura
    • Journal Title

      Genetics 171

      Pages: 1441-1442

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] A comparison of restricted selection procedures to control genetic gains.2004

    • Author(s)
      S.Ieiri
    • Journal Title

      Journal of Animal Breeding and Genetics 121

      Pages: 90-100

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Monitoring of genetic diversity in the Japanese Black cattle population by the use of pedigree information.2004

    • Author(s)
      T.Honda
    • Journal Title

      Journal of Animal Breeding and Genetics 121

      Pages: 242-252

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Reduction of inbreeding in commercial females by rotational mating with several sire lines.2004

    • Author(s)
      T.Honda
    • Journal Title

      Genetics, Selection, Evolution 36

      Pages: 509-526

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] A comparison of restricted selection procedures to control genetic gains.2004

    • Author(s)
      S.Ieiri, T.Nomura, H.Hirooka, M.Satoh
    • Journal Title

      Journal of Animal Breeding and Genetics 121

      Pages: 90-100

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Monitoring of genetic diversity in the Japanese Black cattle population by the use of pedigree information.2004

    • Author(s)
      T.Honda, T.Nomura, Y.Yamaguchi, F.Mukai
    • Journal Title

      Journal of Animal Breeding and Genetics 121

      Pages: 242-252

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Reduction of inbreeding in commercial females by rotational mating with several sire lines.2004

    • Author(s)
      T.Honda, T.Nomura, F.Mukai
    • Journal Title

      Genetics, Selection, Evolution 36

      Pages: 509-526

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 2007-12-13  

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