Table 5.
Genetic (above the diagonal), phenotypic (below the diagonal) correlation between weight gain traits and parameters of the growth curve (GR0–2 to GR18–20, α, β, γ)1)
Trait2) | GR0–2 | GR2–4 | GR4–6 | GR6–8 | GR8–10 | GR10–12 | GR12–14 | GR14–16 | GR16–18 | GR18–20 | α | β | γ |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
GR0–2 | - | 0.434 | 0.723 | 0.545 | 0.615 | 0.717 | −0.258 | −0.140 | 0.050 | 0.130 | 0.063 | −0.667 | 0.198 |
GR2–4 | 0.808 | - | 0.742 | 0.550 | 0.502 | 0.706 | 0.295 | −0.300 | −0.527 | −0.241 | −0.298 | −0.657 | 0.654 |
GR4–6 | 0.754 | 0.812 | - | 0.920 | 0.652 | 0.939 | 0.993 | 0.270 | 0.611 | −0.517 | 0.177 | −0.393 | 0.540 |
GR6–8 | 0.743 | 0.777 | 0.799 | - | 0.417 | 0.971 | 0.083 | 0.208 | 0.198 | −0.228 | 0.288 | −0.264 | 0.987 |
GR8–10 | 0.213 | 0.224 | 0.216 | 0.208 | - | 0.981 | 0.507 | 0.143 | 0.329 | −0.235 | −0.277 | −0.485 | 0.671 |
GR10–12 | 0.401 | 0.456 | 0.498 | 0.504 | −0.011 | - | 0.730 | 0.605 | 0.416 | −0.385 | 0.687 | 0.214 | 0.542 |
GR12–14 | −0.05 | −0.03 | −0.024 | 0.002 | 0.190 | 0.079 | - | 0.780 | 0.850 | −0.277 | 0.936 | - | 0.183 |
GR14–16 | 0.188 | 0.192 | 0.244 | 0.220 | 0.280 | 0.224 | 0.228 | - | 0.888 | −0.271 | 0.772 | 0.369 | −0.210 |
GR16–18 | −0.298 | −0.314 | −0.365 | −0.371 | 0.223 | −0.060 | 0.367 | 0.194 | - | 0.021 | 0.930 | 0.723 | −0.543 |
GR18–20 | 0.115 | 0.021 | 0.099 | 0.099 | 0.091 | 0.140 | 0.150 | 0.193 | 0.190 | - | 0.584 | 0.311 | −0.968 |
α | 0.399 | 0.463 | 0.576 | 0.581 | 0.251 | 0.483 | 0.031 | 0.014 | 0.550 | −0.335 | - | 0.528 | −0.388 |
β | −0.590 | −0.665 | −0.624 | −0.569 | 0.096 | −0.071 | 0.475 | 0.231 | 0.649 | 0.190 | 0.696 | - | −0.370 |
γ | 0.073 | 0.021 | 0.006 | 0.005 | 0.297 | 0.219 | 0.544 | 0.542 | 0.711 | 0.514 | −0.560 | −0.264 | - |
Genetic correlations are above the diagonal and phenotypic correlations are below the diagonal, Traits: weight gain traits and growth curve parameter traits.
GR0–2, weight gain from hatch to 2 weeks of age; GR2–4, weight gain from 2 to 4 weeks of age; GR4–6, weight gain from 4 to 6 weeks of age; GR6–8, weight gain from 6 to 8 weeks of age; GR8–10, weight gain from 8 to 10 weeks of age; GR10–12, weight gain from 10 to 12 weeks of age; GR12–14, weight gain from 12 to 14 weeks of age; GR14–16, weight gain from 14 to 16 weeks of age; GR16–18, weight gain from 16 to 18 weeks of age; GR18–20, weight gain from 18 to 20 weeks of age; α, asymptotic live body weight (g); β, inflection point at which 50% of the asymptotic weight is realized (wk); γ, constant scale that is proportional to the overall growth rate (wk).