Genetic parameters and expected responses to selection for components of feed efficiency in a Duroc pig line

Table 7 Average (standard deviation) across 50 replicates for selection intensity, proportion of male (M) and female (F) candidates selected, and accuracy for the evaluated scenarios

Scenario	Intensity	Proportion F	Proportion M	Accuracy
\({\hat{\mathbf{I}}}_{\text{FI}}\)	− 1.53 (0.10)	0.15 (0.02)	0.64 (0.13)
\({\hat{\mathbf{I}}}_{\text{tRFI}}\)	− 1.52 (0.09)	0.15 (0.02)	0.66 (0.13)	0.56 (0.08)
\({\hat{\mathbf{I}}}_{\text{RFI}}\)	− 1.53 (0.09)	0.15 (0.02)	0.61 (0.13)	0.61 (0.05)
\({\hat{\mathbf{I}}}_{{{\text{FI}}/{\text{MW}}}}\)	− 1.50 (0.1)	0.15 (0.02)	0.72 (0.12)	0.47 (0.09)
\({\hat{\mathbf{I}}}_{{{\text{FI}}/{\text{WG}}}}\)	− 1.49 (0.1)	0.15 (0.02)	0.72 (0.14)	0.53 (0.05)
\({\hat{\mathbf{I}}}_{{{\text{FI}}/{\text{FG}}}}\)	− 1.52 (0.09)	0.15 (0.02)	0.65 (0.14)	0.44 (0.09)

\({\hat{\mathbf{I}}}_{\text{RFI}}\) = selection against the consumption of feed beyond individual needs defined by the overall needs; \({\hat{\mathbf{I}}}_{{{\text{FI}}/{\text{MW}}}}\), \({\hat{\mathbf{I}}}_{{{\text{FI}}/{\text{WG}}}}\), \({\hat{\mathbf{I}}}_{{{\text{FI}}/{\text{FG}}}}\) = selection to reduce the amount of feed consumed for maintenance, growth and fat deposition, respectively
\({\hat{\mathbf{I}}}_{\text{FI}}\) = selection against feed intake; \({\hat{\mathbf{I}}}_{\text{tRFI}}\) = selection for reduced traditional \({\text{RFI}}\)

ISSN: 1297-9686