Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 538467
Title The impact of using old germplasm on genetic merit and diversity - A cattle breed case study
Author(s) Eynard, Sonia E.; Windig, Jack J.; Hulsegge, Ina; Hiemstra, Sipke Joost; Calus, Mario P.L.
Source Journal of Animal Breeding and Genetics 135 (2018)4. - ISSN 0931-2668 - p. 311 - 322.
Department(s) Animal Breeding and Genomics
Animal Breeding & Genomics
Publication type Refereed Article in a scientific journal
Publication year 2018
Keyword(s) Ex-situ conservation - Gene bank - Genetic diversity - Genetic merit

Artificial selection and high genetic gains in livestock breeds led to a loss of genetic diversity. Current genetic diversity conservation actions focus on long-term maintenance of breeds under selection. Gene banks play a role in such actions by storing genetic materials for future use and the recent development of genomic information is facilitating characterization of gene bank material for better use. Using the Meuse-Rhine-Issel Dutch cattle breed as a case study, we inferred the potential role of germplasm of old individuals for genetic diversity conservation of the current population. First, we described the evolution of genetic merit and diversity over time and then we applied the optimal contribution (OC) strategy to select individuals for maximizing genetic diversity, or maximizing genetic merit while constraining loss of genetic diversity. In the past decades, genetic merit increased while genetic diversity decreased. Genetic merit and diversity were both higher in an OC scenario restricting the rate of inbreeding when old individuals were considered for selection, compared to considering only animals from the current population. Thus, our study shows that gene bank material, in the form of old individuals, has the potential to support long-term maintenance and selection of breeds.

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