Managing genetic resources in selected and conserved populations

B. Villanueva, R. Pong-Wong, John Woolliams

Research output: Chapter in Book/Report/Conference proceedingConference contribution


Managing the rate of inbreeding (Delta F) provides a general framework for managing genetic resources in formed breeding populations. Methods for managing Delta F have been developed over the lost five years and they allow the attainment of the greatest expected genetic progress while restricting at the some time the increase in inbreeding. This is achieved by optimising the contribution that each candidate for selection must have to produce the next generation. The methods take into account all available performance and pedigree information and use Best Linear Unbiased Prediction (BLUP) estimates as a predictor of merit. Importantly, these tools give at least equal, but more often more gain than traditional selection based on truncation of BLUP estimated breeding values when compared at the some Delta F Deterministic predictions for the expected gain obtained with optimised selection with Delta F restricted are now available. The optimisation tool can be also applied in a conservation context to minimise Delta F with restrictions to avoid loss in performance in valuable traits. Information on known quantitative trait loci or on markers linked to them can be incorporated into the optimisation process to further increase selection response. Molecular genetic information can also be incorporated into these tools to increase the precision of genetic relationships between individuals and to manage Delta F at specific positions or genome regions.
Original languageUndefined/Unknown
Title of host publicationFarm Animal Genetic Resources
EditorsS. Avendano, G. Simm, K. D. Sinclair, S. Townsend
Place of PublicationNottingham
PublisherNottingham University Press
Number of pages20
ISBN (Print)1-897676-15-8
Publication statusPublished - 2004
EventConference on Farm Animal Genetic Resources - Edinburgh, United Kingdom
Duration: 25 Nov 200227 Nov 2002


ConferenceConference on Farm Animal Genetic Resources
Country/TerritoryUnited Kingdom


  • marker assisted selection identified major gene optimized contributions livestock populations index selection beef-cattle rates accumulation information strategies

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