Table 3

Increment in accuracy of selection for low hip score using EBV versus phenotype
Animals with phenotype Animals with parental phenotype Proportion with r > √½.h
h mean r n incr √½.h mean r n incr EBV pheno incr
AKT 0.62 0.74 23 1.18 0.44 0.64 129 1.45 0.597 0.195 3.05
BEARD 0.68 0.73 26 1.08 0.48 0.61 324 1.29 0.923 0.806 1.15
BORD 0.66 0.74 98 1.11 0.47 0.58 910 1.23 0.745 0.583 1.28
ENG 0.59 0.72 18 1.21 0.42 0.62 180 1.47 0.948 0.928 1.02
FCR 0.53 0.66 54 1.24 0.38 0.53 1067 1.39 0.998 0.866 1.15
GDN 0.66 0.73 30 1.12 0.46 0.61 145 1.32 0.928 0.873 1.06
NEWF 0.68 0.75 37 1.11 0.48 0.58 441 1.21 0.829 0.697 1.19
RR 0.57 0.66 20 1.16 0.40 0.52 521 1.28 0.844 0.502 1.68
SHUSK 0.69 0.74 12 1.08 0.49 0.58 288 1.18 0.478 0.209 2.29
TT 0.58 0.70 45 1.19 0.41 0.55 712 1.34 0.928 0.736 1.26
BMD 0.60 0.71 48 1.19 0.43 0.56 402 1.31 0.893 0.754 1.18
GR 0.63 0.73 277 1.15 0.45 0.54 5097 1.21 0.860 0.791 1.09
GSD 0.59 0.69 337 1.15 0.42 0.51 3343 1.21 0.571 0.441 1.29
LAB 0.57 0.70 1004 1.21 0.41 0.52 16160 1.28 0.685 0.494 1.39
ROTT 0.63 0.73 51 1.17 0.44 0.59 565 1.34 0.568 0.361 1.57
Mean 1.16 1.30 1.44

(Left panel) The mean accuracy (r) of EBV of phenotyped animals born in 2010 compared to accuracy of phenotypic selection (h), with the sample size (n) and increment in accuracy (incr). (Middle panel) The mean accuracy of EBV of unphenotyped animals born in 2011, but with parental phenotypes, compared to the accuracy of selection on parental phenotypes (√(½).h). (Right panel) The proportion of unphenotyped animals born in 2011 with EBV accuracy exceeding √(½).h (EBV) compared to the proportion of 2011 born animals with parental phenotypes available (pheno). The top panel utilised parameters for 10 breeds derived from univariate analyses, while the bottom panel utilised parameters for 5 breeds derived from bivariate analyses of hip and elbow score. Increments calculated prior to rounding. Breed abbreviations: Akita [AKT], Bearded Collie [BEARD], Bernese Mountain Dog [BMD], Border Collie [BORD], English Setter [ENG], Flat Coat Retriever [FCR], Gordon Setter [GDN], Golden Retriever [GR], German Shepherd Dog [GSD], Labrador Retriever [LAB], Newfoundland [NEWF], Rottweiler [ROTT], Rhodesian Ridgeback [RR], Siberian Husky [SHUSK] and Tibetan Terrier [TT].

Lewis et al.

Lewis et al. BMC Genetics 2013 14:16   doi:10.1186/1471-2156-14-16

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