Skip to main content

Table 4 Estimated genetic parameters for piglet survival and birth weight traits analysed at the sow level

From: Evaluation of direct and maternal responses in reproduction traits based on different selection strategies for postnatal piglet survival in a selection experiment

Trait Genetic variance NB ABW SDBW SVLB SVLNP
NB 1.920 0.22 − 0.39 0.38 − 0.37 − 0.36
(0.16 to 0.30) (− 0.59 to − 0.17) (0.12 to 0.65) (− 0.84 to 0.05) (− 0.68 to − 0.05)
Pr(h2 > 0) = 1.00 Pr(rg < 0) = 1.00 Pr(rg > 0) = 0.99 Pr(rg < 0) = 0.94 Pr(rg < 0) = 0.98
ABW 0.013 − 0.062 0.22 0.68 − 0.17 0.31
  (0.13 to 0.32) (0.48 to 0.85) (− 0.64 to 0.29) (− 0.04 to 0.65)
  Pr(h2 > 0) = 1.00 Pr(rg > 0) = 1.00 Pr(rg < 0) = 0.77 Pr(rg > 0) = 0.95
SDBW 0.001 0.012 0.002 0.11 − 0.43 − 0.02
   (0.06 to 0.17) (− 0.86 to 0.04) (− 0.41 to 0.35)
   Pr(h2 > 0) = 1.00 Pr(rg < 0) = 0.95 Pr(rg < 0) = 053
SVLB 0.0003 − 0.009 − 0.0003 − 0.0002 0.06 0.18
    (0.02 to 0.12) (− 0.31 to 0.68)
    Pr(h2 > 0) = 1.00 Pr(rg > 0) = 0.76
SVLNP 0.002 − 0.020 0.001 − 0.00001 0.0001 0.13
     (0.06 to 0.19)
     Pr(h2 > 0) = 1.00
  1. Estimates of number piglets born (NB), average piglet birth weight per litter (ABW), standard deviation of piglet birth weight within litter (SDBW), piglet survival rate per litter at birth (SVLB) and piglet survival rate per litter during the nursing period (SVLNP) presented as posterior means of genetic variances, direct heritabilities (on the diagonal), genetic correlations \({\text{r}}_{\text{g}}\) (above diagonal) including their 95% highest posterior density interval (in parentheses), posterior probability of being positive Pr(. > 0) or negative Pr(. < 0) and genetic covariances (below the diagonal) using a Bayesian multivariate analysis at the sow level
\