Table 5

Accuracy of direct genomic estimated breeding value.

POP1(40 k)

POP2(800 k)


h2

480

960

1920

7680

480

1920


0.10

-

-

-

0.44a,a

-

0.30b,a

PHE

0.25

-

-

-

0.56a,b

-

0.41b,b

0.40

-

-

-

0.65a,c

-

0.50b,c


0.10

0.37a,a

0.45b,a

0.56c,a

-

0.43b,a

-

EBV

0.25

0.37a,a

0.49b,b

0.60c,b

-

0.46d,ab

-

0.40

0.39a,b

0.51b,c

0.64c,c

-

0.48d,b

-


The accuracies of Direct Genomic Estimated Breeding Value (DGEBV) are for animals in the prediction set, considering two levels of marker densities, different numbers of bulls in the training set (TS), three heritability levels, and two alternate response variables used for calculating the marker effects - phenotype (PHE) or Estimated Breeding Value (EBV). The accuracy of EBV used for calculating the marker effects was 0.79, 0.90 or 0.94 for the heritability 0.10, 0.25 or 0.40, respectively, regardless the population and number of bulls in the TS. The average progeny size was 73 for all TS sizes, except for those were the phenotypic record was used to estimate the marker effects. The results are presented as the average over 10 replicates. Different letters indicate significant differences (p < 0.05) by t-test (the first letter indicates differences within rows, while the second letter indicates differences within columns).

Brito et al. BMC Genetics 2011 12:80   doi:10.1186/1471-2156-12-80

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