Evaluation of the genomic breeding value

Evaluation of the genomic breeding value

At this early stage, it is difficult to evaluate the effect of genomic selection on genetic progress. However, based on the genotyped animals so far, evaluations of traditional breeding values and genomic breeding values indicate that genetic progress could be improved by around 30 % with the use of genomic selection.

The greatest effects will be seen in Norsvin Landrace due to the genotyping of Landrace sows. Looking at single traits in the breeding goal (assuming that we have only one selection trait at the time) we would expect a 25 to 80 % increase in progress on maternal traits compared to traditional breeding methods. Likewise, for other production traits in Norsvin Duroc and Landrace, recorded on males only or both males and females, a 5 to 30 % increase is expected.

In summary, results so far confirm that genomic selection facilitates more efficient genetic improvement of traits that has been difficult to improve through traditional breeding, such as sow longevity and other maternal traits. However, to include these traits in selection, they must be measured either in nucleus herds or in commercial herds.