The large amount of genomic information now available permits us to obtain accurate estimates of genetic relationships between animals and to target specific regions in the genome where there is an interest in maximising diversity. Using a semidefinite programming optimisation approach, we have investigated the effectiveness of using genomic coancestry matrices for controlling the loss of genetic variability in specific genomic regions while restricting the overall loss in the rest of the genome. The results show that genomic management was very successful for avoiding loss of diversity at specific genomic regions (even increased diversity). This management was also successful in restricting the loss of diversity in the remaining genome although the realised rate of coancestry resulted higher than the restriction imposed. There is thus a need of refining the theory of genetic contributions when realised genomic matrices are used.

Fernando Gómez-Romano, Beatriz Villanueva, Jesús Fernández, John A Woolliams, Ricardo Pong-Wong

Proceedings of the World Congress on Genetics Applied to Livestock Production, Volume Genetic Improvement Programs: Selection for harsh environments and management of animal genetic resources (Posters), , 444, 2014
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