Table 2.
Genetic parameters, correlation coefficient, test statistic and variance component ratios estimated using linear and generalised linear mixed models with two additive genetic effects per animal for all traits
| Traits |
|
|
|
|
|
|
|
RLRT 1 |
|
|
|
|---|---|---|---|---|---|---|---|---|---|---|---|
| Net BW gain (g/days) | 0.28 (0.01) | 804.960 (34.870) | 359.660 (18.48) | 445.300 (25.468) | 359.890 (18.074) | 2071.200 (27.362) | 0.899 (0.020) | 122.8*** | 10.58 (2.10) | −0.3 (16.8) | 100.3 (16.8) |
| Fat score | 0.23 (0.01) | 0.044 (0.002) | 0.021 (0.001) | 0.024 (0.002) | 0.020 (0.001) | 0.149 (0.002) | 0.910 (0.022) | 69.2*** | 9.17 (2.20) | 12.3 (22.2) | 87.7 (22.2) |
| Fat score 2 | 0.46 (0.02) | 1.960 (0.085) | 0.790 (0.052) | 1.170 (0.061) | 0.869 (0.048) | 3.290 | 0.904 (0.025) | – | 11.31 (2.58) | −35.7 (20.7) | 135.7 (20.7) |
| Conformation class | 0.16 (0.01) | 58.614 (3.900) | 27.027 (1.980) | 31.587 (2.850) | 26.634 (1.980) | 320.080 (3.289) | 0.912 (0.029) | 27.6*** | 9.12 (2.80) | 7.3 (28.3) | 92.7 (28.3) |
| Conformation class 2 | 0.43 (0.02) | 1.796 (0.083) | 0.678 (0.049) | 1.119 (0.062) | 0.773 (0.048) | 3.290 | 0.888 (0.031) | – | 13.95 (3.26) | −37.9 (20.0) | 137.9 (20.0) |
| Killing out percentage (%) | 0.52 (0.09) | 1.348 (0.267) | 0.701 (0.138) | 0.648 (0.201) | 0.672 (0.135) | 1.262 (0.221) | 0.998 (0.096) | 0.7 | – | – | – |
=heritability; 
=additive genetic variance; 
=additive genetic variance as sire; 
=additive genetic variance as dam; 
=covariance; 
=residual variance; 
=correlation between parental effects; 
=imprinting variance; 
=relative imprinting variance (%); 
=paternal contribution to the imprinting variance (%); 
=maternal contribution to the imprinting variance (%).
Standard errors are given in brackets.
REML likelihood ratio test; RLRT=2 (log-likelihoodimprinting model−log-likelihoodanimal model).
Treated as ordered categorical traits using a generalised linear mixed model.
***P<0.001.