Table 4.

Estimates of heritabilities (diagonal), phenotypic correlations (below diagonal), genetic correlations (above diagonal), and their SE among litter size, survival rate, gestation length, and litter weight traits

Traits1	TB	LB	LW	SB	SW	AWB	AW3	AWW	GL
TB	0.07 ± 0.03*	0.78 ± 0.08*	0.57 ± 0.15*	−0.13 ± 0.18	−0.29 ± 0.23	−0.08 ± 0.24	0.08 ± 0.23	0.02 ± 0.31	−0.10 ± 0.16
LB	0.84 ± 0.01*	0.07 ± 0.02*	0.92 ± 0.04*	0.27 ± 0.06*	0.55 ± 0.16*	0.53 ± 0.18*	0.03 ± 0.22	−0.01 ± 0.29	−0.29 ± 0.16
LW	0.71 ± 0.01*	0.89 ± 0.01*	0.09 ± 0.04*	0.39 ± 0.17*	0.44 ± 0.19*	0.58 ± 0.15*	0.17 ± 0.21	−0.18 ± 0.09*	−0.26 ± 0.14
SB	−0.12 ± 0.01*	0.34 ± 0.02*	0.34 ± 0.01*	0.13 ± 0.03*	0.94 ± 0.04*	0.66 ± 0.10*	0.43 ± 0.15*	−0.02 ± 0.22	−0.43 ± 0.14*
SW	−0.13 ± 0.02*	0.25 ± 0.02*	0.52 ± 0.01*	0.73 ± 0.09*	0.10 ± 0.02*	0.61 ± 0.13*	0.12 ± 0.09	−0.26 ± 0.26	−0.37 ± 0.15*
AWB	−0.43 ± 0.02*	0.12 ± 0.03*	0.15 ± 0.03*	0.34 ± 0.02*	0.29 ± 0.02*	0.28 ± 0.05*	0.78 ± 0.10*	0.73 ± 0.17*	0.33 ± 0.14*
AW3	−0.19 ± 0.11	−0.19 ± 0.03*	−0.04 ± 0.03	0.20 ± 0.03*	0.13 ± 0.09	0.44 ± 0.02*	0.19 ± 0.04*	0.61 ± 0.16*	0.15 ± 0.13
AWW	−0.12 ± 0.08	−0.11 ± 0.03*	−0.02 ± 0.03	0.09 ± 0.03*	0.01 ± 0.03	0.33 ± 0.03*	0.64 ± 0.02*	0.10 ± 0.04*	0.07 ± 0.18
GL	−0.23 ± 0.02*	−0.22 ± 0.02*	−0.19 ± 0.02*	−0.30 ± 0.02*	−0.15 ± 0.02*	0.21 ± 0.03*	0.14 ± 0.03*	0.09 ± 0.03*	0.29 ± 0.03*

¹TB = total number of kits born; LB = number of kits alive at birth; LW = number of kits alive at weaning; SB = survival rate at birth; SW = survival rate at weaning; AWB = average kit weight per litter at birth; AW3 = average kit weight per litter at week 3; AWW = average kit weight per litter at weaning; GL = gestation length.

*P < 0.05.