A method for deriving the genetic matrix needed for selection across combinations of breeds

Author(s)
Barwick, Stephen A
Johnston, David J
Walmsley, Bradley J
Jeyaruban, M Gilbert
Boerner, Vinzent
Publication Date
2020-09
Abstract
A method is described for deriving the genetic matrix G needed for breeders to select across breeds for any breeding objective. The matrix comprises partitions among selection criteria (G<sub>11</sub>), between selection criteria and the breeding objective traits (G<sub>12</sub>), and among the breeding objective traits (G<sub>22</sub>). A weighting procedure is used to combine the G matrix of individual breeds with known breed differences. Between-breed variances are added to the diagonals of the matrix. Selection across many breeds can be quite different from that across a subset of the breeds. The particular breeds, and the numbers of each breed, that the breeder is prepared to consider in selection changes the genetic matrix and the selection index that should be used.
Citation
Journal of Animal Breeding and Genetics, 137(5), p. 510-519
ISSN
1439-0388
0931-2668
Pubmed ID
32350904
Link
Publisher
Wiley-Blackwell Verlag GmbH
Title
A method for deriving the genetic matrix needed for selection across combinations of breeds
Type of document
Journal Article
Entity Type
Publication

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