Post by gfarries on Jun 3, 2015 9:26:16 GMT
I have been using GCTA to calculate the heritability of several traits in horses using both the additive GRM and dominant GRM.
For some traits I am finding almost zero additive heritability, but using the additive+dominant GRM getting heritabilities of 0.3+.
Source Variance SE
V(G1) 0.000032 3.800158
V(G2) 12.214193 11.414265
V(e) 20.880480 11.182725
Vp 33.094705 2.921379
V(G1)/Vp 0.000001 0.114827
V(G2)/Vp 0.369068 0.333898
Sum of V(G)/Vp 0.369069 0.351796
I am concerned that the standard error for the Vg is very high. My n=289, however my sample population would have very low genetic diversity, Ne for this breed of horse has been estimated at 100.
Any feedback would be greatly appreciated as I am quite new to GCTA.
For some traits I am finding almost zero additive heritability, but using the additive+dominant GRM getting heritabilities of 0.3+.
Source Variance SE
V(G1) 0.000032 3.800158
V(G2) 12.214193 11.414265
V(e) 20.880480 11.182725
Vp 33.094705 2.921379
V(G1)/Vp 0.000001 0.114827
V(G2)/Vp 0.369068 0.333898
Sum of V(G)/Vp 0.369069 0.351796
I am concerned that the standard error for the Vg is very high. My n=289, however my sample population would have very low genetic diversity, Ne for this breed of horse has been estimated at 100.
Any feedback would be greatly appreciated as I am quite new to GCTA.
