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# Table 5 Variance components estimated at generation $${\varvec{t}}$$ = 3 using social (SGM) and classical genetic (CGM) models for group members composed at random or families

Parameter Simulated values Estimatesa from SGM (SD) Estimatesb from CGM (SD) SGM-CGMc
Random group and $$r_{{u_{DS} }}$$ = − 0.5
DGE variance 1 0.975* 0.145 1.023 0.142 − 0.051***
Covariance of DGE and SGE − 0.05 − 0.049 0.018
SGE variance 0.01 0.010 0.004
Litter variance 0.25 0.251 0.045 0.245 0.047 0.006
Pen variance 0.25 0.249 0.050 0.287*** 0.035 − 0.037***
Residual variance 2.50 2.500 0.094 2.543*** 0.086 − 0.044***
Random group and $$r_{{u_{DS} }}$$ = 0
DGE variance 1 1 0.141 0.961** 0.143 0.039*
Covariance of DGE and SGE 0 − 0.001 0.021
SGE variance 0.01 0.010 0.005
Litter variance 0.25 0.245 0.044 0.256 0.043 − 0.011*
Pen variance 0.25 0.250 0.058 0.350*** 0.038 − 0.1***
Residual variance 2.50 2.492 0.089 2.516 0.099 − 0.024*
Random group an $$r_{{u_{DS} }}$$ = 0.5
DGE variance 1 0.980* 0.142 0.929*** 0.137 0.050**
Covariance of DGE and SGE 0.05 0.048 0.021
SGE variance 0.01 0.009 0.005
Litter variance 0.25 0.247 0.045 0.248 0.045 0.000
Pen variance 0.25 0.252 0.064 0.412*** 0.041 − 0.160***
Residual variance 2.50 2.501 0.088 2.478** 0.083 0.023*
Family group and $$r_{{u_{DS} }}$$ = 0
DGE variance 1 0.987 0.154 0.989 0.154 − 0.002
Covariance of DGE and SGE 0 0 0.016
SGE variance 0.01 0.010 0.003
Litter variance 0.25 0.250 0.054 0.251 0.052 − 0.001
Pen variance 0.25 0.251 0.065 0.433*** 0.049 − 0.181***
Residual variance 2.50 2.492 0.093 2.506 0.086 − 0.014
1. aValue was the mean (standard deviation) over 400 replicates for variance components estimated from SGM
2. bValue was the mean (standard deviation) over 200 replicates for variance components estimated from CGM. One sample t-test was carried out to compare the estimates from SGM and CGM with the simulated values
3. cTwo sample t-test was carried out to compare the estimates from SGM with those from CGM
4. P-value indicates the significance: *** < 0.0001, ** < 0.001, and * < 0.01
5. The trait was simulated with an SGE variance of 0.01 and correlations of -0.5, 0 and 0.5 between SGE and DGE 