Genomic evaluation for a three-way crossbreeding system considering breed-of-origin of alleles

Table 9 Accuracies* of BOA^a, \({{\bf G}}_{{{\bf A}}}\) ^b, and \({{\bf G}}_{{{\bf B}}}\) ^c models calculated for each of the four folds of cross-validation for estimating breeding values of the maternal breed Landrace pigs for crossbred performance for each trait, and weighting factor (\(\varvec{w}\)) of the calculated DRP

Folds	\(\varvec{w}\)	BOA	\({{\bf G}}_{{{\bf A}}}\)	\({{\bf G}}_{{{\bf B}}}\)
ADG
1	0.20	0.133	0.106	0.099
2	0.23	0.190	0.095	0.111
3	0.21	0.159	0.106	0.106
4	0.22	0.094	0.007	0.014
Mean		0.144	0.079	0.083
BF
1	0.09	0.185	0.169	0.171
2	0.07	0.186	0.210	0.199
3	0.10	0.223	0.216	0.215
4	0.09	0.144	0.149	0.141
Mean		0.184	0.186	0.181
LD
1	0.43	0.224	0.206	0.203
2	0.47	0.085	0.107	0.107
3	0.45	0.239	0.232	0.228
4	0.47	0.170	0.208	0.207
Mean		0.179	0.188	0.186

ADG average daily gain, BF back fat thickness, LD loin depth
* Accuracies measured as weighted correlation between DRP and EBV of LR pigs for crossbred performance. Approximate standard errors SE, computed as (1−r²)/N √ (1−r²)/N, were equal to 0.023 to 0.024 for the mean accuracies across the folds, for all combinations of traits and methods.
^aBOA model, model with breed-specific relationship matrices
^b \({\text{G}}_{\text{A}}\) model, model with genomic relationship matrix by allele frequencies obtained across the genotyped population
^c \({\text{G}}_{\text{B}}\) model, model with genomic relationship matrix by breed-specific allele frequencies

ISSN: 1297-9686