Table 3.

Genetic parameter estimates for growth traits between birth and 12 month of age fitting an animal or sire model accounting for permanent environmental effects due to dam (pe) and litter effects (lit).

Trait	BWT		M3WT		M6WT		M9WT		M12WT
Model	Animal	Sire	Animal	Sire	Animal	Sire	Animal	Sire	Animal	Sire
σ2a	0.046		0.651	–	1.613	–	1.652	–	1.854	–
σ2sire	–	0.009	–	0.455	–	0.799	–	0.375	–	0.200
σ2pe	0.034	0.046	0.397	0.554	0.625	0.995	0.573	1.080	0.577	1.159
σ2lit	0.125	0.156	1.160	1.117	1.124	1.007	2.022	1.915	2.821	2.682
σ2res	0.119	0.142	1.815	2.072	4.991	5.764	9.085	9.940	12.204	13.093
σ2pheno	0.324	0.323	4.023	4.198	8.354	8.565	13.332	13.311	17.456	17.512
s.e.	0.007	0.69	0.09	0.110	0.193	0.222	0.311	0.307	0.425	0.430
h2	0.14	0.11	0.16	0.43	0.19	0.37	0.12	0.11	0.11	0.13
s.e.	0.03	0.03	0.03	0.07	0.03	0.07	0.03	0.04	0.03	0.04
pe2	0.11	0.14	0.10	0.13	0.07	0.12	0.04	0.08	0.03	0.07
s.e.	0.02	0.02	0.02	0.02	0.02	0.02	0.02	0.02	0.02	0.02
lit2	0.39	0.39	0.29	0.27	0.13	0.12	0.15	0.14	0.16	0.15
s.e.	0.02	0.02	0.02	0.02	0.03	0.03	0.03	0.03	0.03	0.03

Where σ²_a ∼ direct additive variance; σ²_sire ∼ Sire variance; σ²_pe ∼ variance of permanent environment due to the dam; σ²_lit ∼variance due to Litter effects; σ²_res ∼residual variance; σ²_pheno∼ total phenotypic variance; s.e. ∼ standard error; BWT ∼ birth weight; M3WT∼ 3 months weight; M6WT∼ 6 months weight; M9WT∼ 9 months weight; M12WT∼ 12 months weight.