2009
DOI: 10.1017/s1751731109004807
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Mating animals by minimising the covariance between ancestral contributions generates less inbreeding without compromising genetic gain in breeding schemes with truncation selection

Abstract: We reasoned that mating animals by minimising the covariance between ancestral contributions (MCAC mating) will generate less inbreeding and at least as much genetic gain as minimum-coancestry mating in breeding schemes where the animals are truncation-selected. We tested this hypothesis by stochastic simulation and compared the mating criteria in hierarchical and factorial breeding schemes, where the animals were selected based on breeding values predicted by animal-model BLUP. Random mating was included as a… Show more

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Cited by 12 publications
(19 citation statements)
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“…This suggests that the advantage of OCS found in this study should be present even if sophisticated mating rules are applied. Henryon et al (2009) showed in a simulation study that minimizing the covariance between ancestral contributions (MCAC mating) generated less inbreeding and at least as much genetic gain as minimum coancestry mating. As long as a central organization manages the database and performs the genetic evaluation and OCS, OCS based on BLUP evaluations and MCAC mating should also be feasible in a small population without AI.…”
Section: Discussionmentioning
confidence: 99%
“…This suggests that the advantage of OCS found in this study should be present even if sophisticated mating rules are applied. Henryon et al (2009) showed in a simulation study that minimizing the covariance between ancestral contributions (MCAC mating) generated less inbreeding and at least as much genetic gain as minimum coancestry mating. As long as a central organization manages the database and performs the genetic evaluation and OCS, OCS based on BLUP evaluations and MCAC mating should also be feasible in a small population without AI.…”
Section: Discussionmentioning
confidence: 99%
“…Hence, if the change in the ancestral contributions due to selection in the next generation is zero, the sum of the squared long-term contributions, P c 2 i , is not expected to increase because of this selection. Henryon et al (2009) found that MCAC mating generated 4-8% less inbreeding than did minimum coancestry mating in truncation selection schemes that included hierarchical and factorial matings without a loss in genetic gain.…”
Section: Minimum Coancestry Matingmentioning
confidence: 99%
“…Minimum covariance of ancestral contributions (MCAC) MCAC mating (Henryon et al, 2009) is designed to pair individuals such that the correlations between the contributions of the ancestors to the future population are minimised. Consequently, changing the contributions of an ancestor by selection has a smaller impact on the contributions of other ancestors.…”
Section: Minimum Coancestry Matingmentioning
confidence: 99%
“…However, performances are not really very different from that of the minimum kinship mating, so the former may be recommended. Henryon et al [26] proposed to reduce the covariance between ancestral contributions (MCAC mating), showing that lower levels of inbreeding can be reached when performing truncation selection. When physiologically feasible, some authors [27] have proved that performing a factorial mating design (i.e.…”
Section: Use Of the Optimum Contribution Selection (Ocs)mentioning
confidence: 99%