Genetic contributions and inbreeding

John Woolliams

Genetic contributions and inbreeding

In: Utilisation and conservation of farm animal genetic resources

Author:

John Woolliams

John Woolliams ¹Roslin Institute, Roslin Midlothian EH25 9PS, United Kingdom
²Department of Animal and Aquacultural Sciences, Norwegian University of Life Science, P.O.Box 1432, Ås, Norway

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Type:: Chapter

Pages:: 147–165

DOI:: https://doi.org/10.3920/9789086865925_008

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This chapter examines how and why inbreeding accumulates in a population, and introduces the concept of genetic contribution as a simple means of describing the rate of inbreeding (ΔF). The relationship between ΔF and genetic contributions is used to derive the basic principles of managing a population to minimise ΔF. A further relationship between the genetic contributions and the rate of gain in a selected trait is developed to illustrate how the relationships between long term genetic contributions and rates of gain and inbreeding can lead to predictions on the optimum way to select for genetic improvement whilst managing the rate of loss of genetic variation. Approaches to predicting ΔF are examined, and guidelines are given on ways to manage ΔF in practice depending on the sophistication of the breeding scheme. These principles will be developed further for practical implementation in chapter 8.

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Utilisation and conservation of farm animal genetic resources

E-Book ISBN:: 9789086865925

Publisher:: Wageningen Academic

Print Publication Date:: 10 Oct 2007

Subjects
- Life Sciences
  - General
  - Animal & Veterinary

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Genetic contributions and inbreeding

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Utilisation and conservation of farm animal genetic resources

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