Table 2.
Genealogical data and estimates of heritabilities, permanent environmental effects and correlations between NBA12 and NBA3+
| NBA 12 | NBA 3+ | ||
|---|---|---|---|
| Sow with records | 2,570 | 977 | |
| Litters | 4,103 | 2,369 | |
| Mean (SD) | 12.61 (3.51) | 13.14 (3.40) | |
| h2 (SE) | 0.14 (0.02) | 0.19 (0.03) | |
| p2 (SE) | 0.07 (0.02) | 0.08 (0.03) | |
| γ g | 0.81 (0.06) | ||
| γ p | 1.00 (0.00) |
NBA12 = number of born alive piglets at two first parities; NBA3+ = number of born alive piglets at third and subsequent parities; SD: standard deviation; SE: standard error; h2 = heritability; p2 = permanent environmental effect; γg = genetic correlation coefficient of NBA12 and NBA3+; γp = correlation coefficient between permanent effects of NBA12 and NBA3+