Operation of conservation schemes

Theo Meuwissen

Operation of conservation schemes

In: Utilisation and conservation of farm animal genetic resources

Author:

Theo Meuwissen

Theo Meuwissen Department of Animal and Aquacultural Sciences, Norwegian University of Life Sciences, Box 1432, Ås, Norway

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Type:: Chapter

Pages:: 167–193

DOI:: https://doi.org/10.3920/9789086865925_009

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This chapter describes the minimum effective population size needed for a population to survive in the longer term, and this depends among other factors on past effective size. The general recommendation is 50. Selection and mating methods that manage genetic diversity whilst achieving genetic improvement for the breeding goals are described together with similar methods that minimise the inbreeding. In addition, the situation is considered where we want to genetically improve the population in a particular direction. The option to temporarily use some genetics from a related breed to alleviate the inbreeding is treated as well. The selection methods are extended to the use of the information of genetic markers and known genes. The importance of monitoring in a breeding scheme is stressed. Prolonging the generation interval can be a very important method to increase effective population size and reduce genetic drift. Combinations of live and cryoconservation schemes are considered where cryoconservation is used as a backup for the live scheme and where it is used to increase effective population size of small populations.

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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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Operation of conservation schemes

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Utilisation and conservation of farm animal genetic resources

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