Deregressing estimated breeding values and weighting information for genomic regression analyses

Table 1 Relative weights^afor n phenotypic observations on the individual, p observations in twice the halfsib progeny mean with heritability 0.25 and repeatability 0.6, or deregressed EBV with reliability r² for varying values of c, the proportion of genetic variation for which genotypes cannot account

		c
Information Source		0.8	0.5	0.25	0.1
Mean of n repeated records	n
	1	0.79	0.86	0.92	0.97
	2	1.00	1.11	1.22	1.30
	5	1.19	1.35	1.52	1.65
	10	1.27	1.46	1.66	1.81
2 × mean of p half-sib offspring	p
	5	0.79	0.86	0.92	0.97
	10	1.30	1.50	1.71	1.88
	20	1.94	2.40	3.00	3.53
Deregressed EBV with reliability r²	r ²
	0.1	0.31	0.32	0.32	0.33
	0.2	0.63	0.67	0.71	0.73
	0.3	0.96	1.06	1.16	1.23
	0.4	1.30	1.50	1.71	1.88
	0.5	1.67	2.00	2.40	2.73
	0.6	2.05	2.57	3.27	3.91
	0.7	2.44	3.23	4.42	5.68
	0.8	2.86	4.00	6.00	8.57
	0.9	3.29	4.91	8.31	14.21
	1.0	3.75	6.00	12.00	30.00

^aWeights are diagonal elements of the inverse of the scaled residual variance-covariance matrix (with the scalar factored out before inversion). Weights are relative to the information content of an individual observation with c = 0.

ISSN: 1297-9686