Table 2.
Results of variance component estimation according to trait, sex*and residual variance structure**
| Trait/Sex | Model | σ²a | σ²e | h²d | σ²m | σ²c | AIC | BIC | MSE |
|---|---|---|---|---|---|---|---|---|---|
| GBW/M |
HOM |
44 (9) |
226 (8) |
0.12 (0.02) |
113 (7) |
|
157113 |
157137 |
380.54 |
| GBW/M |
HET |
44 (8) |
225 (8) |
0.11 (0.02) |
120 (7) |
|
156986 |
157748 |
381.22 |
| GBW/F |
HOM |
31 (6) |
193 (6) |
0.10 (0.02) |
78 (5) |
|
155334 |
155358 |
305.67 |
| GBW/F |
HET |
31 (6) |
192 (7) |
0.10 (0.02) |
84 (5) |
|
155163 |
155992 |
305.51 |
| GBW/B |
HOM |
44 (7) |
209 (4) |
0.12 (0.02) |
53 (12) |
47 (12) |
346263 |
346298 |
337.94 |
| GBW/B |
HET |
42 (6) |
212 (7) |
0.12 (0.02) |
58 (12) |
47 (12) |
345807 |
347105 |
338.17 |
| YW/M |
HOM |
308 (58) |
292 (44) |
0.51 (0.08) |
|
|
64302 |
64316 |
569.00 |
| YW/M |
HET |
312 (58) |
268 (18) |
0.54 (0.05) |
|
|
64267 |
64593 |
569.19 |
| YW/F |
HOM |
177 (24) |
281 (18) |
0.39 (0.05) |
|
|
82970 |
82985 |
439.54 |
| YW/F |
HET |
183 (24) |
279 (12) |
0.40 (0.03) |
|
|
82907 |
83386 |
439.97 |
| YW/B |
HOM |
220 (15) |
310 (11) |
0.42 (0.03) |
|
|
202426 |
202443 |
499.54 |
| YW/B | HET | 218 (15) | 306 (10) | 0.42 (0.02) | 202249 | 203229 | 500.04 |
*GBW = weight gain from birth to weaning; YW = long-yearling weight; M = males; F = females; B = both sexes; **HOM = model with homogeneous residual variance; HET = model allowing for differences between sire families in residual variance; σ²a = estimated variance for additive direct genetic effect for the mean of each trait; σ²e = estimated residual variance (average residual variance among sire families), in the case of model HOM (HET); σ²m = estimated variance due to maternal additive genetic effects for the mean of GBW; σ²c = estimated variance due to maternal permanent environmental effects for the mean of GBW; AIC = Akaike Information Criterion; BIC = Bayesian Information Criterion. MSE = average mean squared error of prediction based on a 10-fold cross-validation; standard errors are presented between brackets.