Table 1.

Estimates of additive and dominance variance components obtained using REMLF90 for models MA, MG and MGD

Trait	MA	MG	MGD
	$${\mathit{\sigma }}_{\mathit{A}}^{\mathbf{2}}$$	$${\mathit{\sigma }}_{\mathit{A}}^{\mathbf{2}}$$	$${\mathit{\sigma }}_{\mathit{A}}^{\mathbf{2}}$$	$${\mathit{\sigma }}_{\mathit{D}}^{\mathbf{2}}$$	$${\mathit{\sigma }}_{\mathit{E}}^{\mathbf{2}}$$	$$\frac{{\mathit{\sigma }}_{\mathit{D}}^{\mathbf{2}}}{{\mathit{\sigma }}_{\mathit{A}}^{\mathbf{2}}+{\mathit{\sigma }}_{\mathit{D}}^{\mathbf{2}}}$$
Milk yield	261500	214200	208900	92640	164700	0.308
Fat yield	279	274	267	104	198	0.281
Protein yield	213	175	166	115	154	0.409
Somatic cell score	0.230	0.264	0.256	0.261	0.555	0.505
Milkability	0.0193	0.0216	0.0122	0.0076	0.0029	0.390
Stature	3.41	5.73	5.80	0.20	6.51	0.033
Udder score	1.85	2.00	1.99	0.27	9.29	0.118
Udder depth	0.313	0.380	0.380	0.119	0.517	0.238
Feet and legs score	1.32	1.20	1.19	0.21	9.89	0.153