Table 9. Open in new tab Variance...

Item	Model M1	Model M2
Direct genetic variance	0.15	0.12	0.13	0.13	0.14	0.14
Residual variance	0.47	0.56	0.50	0.48	0.61	0.53
Heritability, h²_a	0.24 ± 0.17	0.18 ± 0.14	0.20 ± 0.16	0.22 ± 0.16	0.18 ± 0.14	0.21 ± 0.16
EBV accuracy	0.53	0.48	0.50	0.51	0.48	0.50
Model Logl	−113.01	−131.61	−116.51	−108.49	−144.71	−123.13

Item	Model M1	Model M2
Direct genetic variance	0.15	0.12	0.13	0.13	0.14	0.14
Residual variance	0.47	0.56	0.50	0.48	0.61	0.53
Heritability, h²_a	0.24 ± 0.17	0.18 ± 0.14	0.20 ± 0.16	0.22 ± 0.16	0.18 ± 0.14	0.21 ± 0.16
EBV accuracy	0.53	0.48	0.50	0.51	0.48	0.50
Model Logl	−113.01	−131.61	−116.51	−108.49	−144.71	−123.13

Table 9.

Variance component and genetic parameter estimates obtained from the genetic evaluation of the 3 measures of residual feed intake (RFI) using 2 different evaluation models¹

Item	Model M1			Model M2
Item	RFI_C	RFI_O	RFI_S	RFI_C	RFI_O	RFI_S
Direct genetic variance	0.15	0.12	0.13	0.13	0.14	0.14
Residual variance	0.47	0.56	0.50	0.48	0.61	0.53
Heritability, h²_a	0.24 ± 0.17	0.18 ± 0.14	0.20 ± 0.16	0.22 ± 0.16	0.18 ± 0.14	0.21 ± 0.16
EBV accuracy	0.53	0.48	0.50	0.51	0.48	0.50
Model Logl	−113.01	−131.61	−116.51	−108.49	−144.71	−123.13

Item	Model M1			Model M2
Item	RFI_C	RFI_O	RFI_S	RFI_C	RFI_O	RFI_S
Direct genetic variance	0.15	0.12	0.13	0.13	0.14	0.14
Residual variance	0.47	0.56	0.50	0.48	0.61	0.53
Heritability, h²_a	0.24 ± 0.17	0.18 ± 0.14	0.20 ± 0.16	0.22 ± 0.16	0.18 ± 0.14	0.21 ± 0.16
EBV accuracy	0.53	0.48	0.50	0.51	0.48	0.50
Model Logl	−113.01	−131.61	−116.51	−108.49	−144.71	−123.13

¹RFI_C = residual feed intake (RFI) obtained by regressing ADG and metabolic mid-BW (MWT) on DMI on all pooled data, with test group as a fixed effect; RFI_O = RFI obtained by regressing ADG and MWT on DMI for each test group separately; RFI_S = RFI obtained by regressing ADG and MWT on DMI, with test group as a fixed effect but within seasonal (fall, winter) groups.

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