Table 3.
Average generation interval (L) and annual genetic gain (ΔG in σ a units) across 75 replicates at various rates of inbreeding (±0.05 %) per generation for sheep, beef and dairy traits
Inbreeding rate (%/generation) | 0.5 | 1.0 | Unpenalized | |||
---|---|---|---|---|---|---|
L | ΔG | L | ΔG | L | ΔG | |
Early trait sheep | ||||||
AI/N + MOET + JIVET (GS) | 1.06 | 0.67 | 1.01 | 0.77 | 0.92 | 0.85 |
AI/N + MOET (GS) | 1.73 | 0.43 | 1.39 | 0.63 | 1.23 | 0.75 |
AI/N (GS) | 2.04 | 0.39 | 1.94 | 0.44 | 1.84 | 0.50 |
AI/N + MOET + JIVET | 1.30 | 0.40 | 1.19 | 0.59 | 0.98 | 0.63 |
AI/N + MOET | 1.73 | 0.37 | 1.48 | 0.51 | 1.27 | 0.57 |
AI/N | 2.16 | 0.32 | 2.02 | 0.34 | 1.90 | 0.41 |
Late trait sheep | ||||||
AI/N + MOET + JIVET (GS) | 1.07 | 0.46 | 1.03 | 0.51 | 1.01 | 0.58 |
AI/N + MOET (GS) | 1.64 | 0.34 | 1.43 | 0.39 | 1.41 | 0.46 |
AI/N (GS) | 2.25 | 0.25 | 2.08 | 0.29 | 1.96 | 0.35 |
AI/N + MOET + JIVET | 1.49 | 0.20 | 1.42 | 0.21 | 1.32 | 0.22 |
AI/N + MOET | 3.20 | 0.21 | 3.12 | 0.22 | 3.03 | 0.23 |
AI/N | 3.24 | 0.14 | 3.13 | 0.15 | 3.06 | 0.15 |
Early trait beef | ||||||
AI/N + MOET + JIVET (GS) | 2.28 | 0.41 | 2.1 | 0.49 | 1.99 | 0.57 |
AI/N + MOET (GS) | 2.93 | 0.36 | 2.71 | 0.41 | 2.59 | 0.48 |
AI/N (GS) | 3.92 | 0.27 | 3.69 | 0.29 | 3.70 | 0.34 |
AI/N + MOET + JIVET | 2.63 | 0.25 | 2.27 | 0.31 | 2.19 | 0.36 |
AI/N + MOET | 3.10 | 0.26 | 2.9 | 0.3 | 2.68 | 0.34 |
AI/N | 4.04 | 0.20 | 3.92 | 0.21 | 3.86 | 0.26 |
Late trait beef | ||||||
AI/N + MOET + JIVET (GS) | 2.38 | 0.36 | 2.24 | 0.41 | 2.14 | 0.42 |
AI/N + MOET (GS) | 3.10 | 0.29 | 2.97 | 0.33 | 2.86 | 0.35 |
AI/N (GS) | 4.08 | 0.22 | 3.93 | 0.26 | 3.92 | 0.28 |
AI/N + MOET + JIVET | 2.72 | 0.21 | 2.58 | 0.23 | 2.51 | 0.24 |
AI/N + MOET | 3.36 | 0.21 | 3.19 | 0.23 | 3.00 | 0.23 |
AI/N | 4.18 | 0.17 | 4.15 | 0.17 | 4.03 | 0.18 |
Dairy | ||||||
AI + MOET + JIVET (GS) | 1.92 | 0.54 | 1.86 | 0.58 | 1.79 | 0.67 |
AI + MOET (GS) | 2.66 | 0.40 | 2.58 | 0.44 | 2.46 | 0.51 |
AI (GS) | 3.55 | 0.28 | 3.41 | 0.32 | 3.35 | 0.35 |
AI + MOET + JIVET | 4.09 | 0.24 | 3.97 | 0.26 | 3.91 | 0.28 |
AI + MOET | 4.62 | 0.24 | 4.52 | 0.26 | 4.47 | 0.28 |
AI | 5.55 | 0.18 | 5.39 | 0.21 | 5.28 | 0.24 |
All standard errors of means (SEM) were less than 0.11 and less than 0.003 for all breeding programs for generation interval and genetic gain, respectively