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Table 2 Estimates of relative additive genetic variance components expressing the heritability coefficients (h2) and their standard errors (VCrel ± SE) on the investigated traitsa Min_TBP, Max_TBP and Range_TBP and in addition on NBA in first parity based on univariate analyses

From: Maximum number of total born piglets in a parity and individual ranges in litter size expressed as specific characteristics of sows

Trait Estimated variance components in relation to the total phenotypic variance
Additive genetic Residual
RA01 (German Landrace sows, n = 5509)
 (i) information on five or more parities used for estimation
  Min_TBP 0.112 ± 0.014 0.888 ± 0.014
  Max_TBP 0.298 ± 0.021 0.702 ± 0.021
  Range_TBP 0.056 ± 0.011 0.944 ± 0.011
  NBA_first 0.123 ± 0.017 0.877 ± 0.017
 (ii) information on exactly five parities used for estimation
  Min_TBP 0.070 ± 0.015 0.930 ± 0.015
  Max_TBP 0.283 ± 0.023 0.717 ± 0.023
  Range_TBP 0.066 ± 0.012 9.934 ± 0.012
RACOM (Large White and crossing sows, n = 3926)
 (i) information on five or more used for estimation
  Min_TBP 0.098 ± 0.018 0.902 ± 0.018
  Max_TBP 0.373 ± 0.030 0.627 ± 0.030
  Range_TBP 0.104 ± 0.022 0.896 ± 0.022
  NBA_ first 0.116 ± 0.020 0.884 ± 0.020
 (ii) information on exactly five parities used for estimation
  Min_TBP 0.070 ± 0.024 0.930 ± 0.024
  Max_TBP 0.390 ± 0.040 0.610 ± 0.040
  Range_TBP 0.084 ± 0.026 0.916 ± 0.026
  1. ainvestigated traits were individual maximum and minimum of number total born piglets (Max_TBP, Min_TBP), and individual variability in number total born piglets (Range_TBP); number of piglets born alive in first parity (NBA_first) for comparing to heritability estimates from earlier studies