Table 3.

Genetic parameters and SE for number of lambs born (NLB) and weaned (NLW) per ewe lambing and peri-parturient rise fecal egg counts of the ewe at lambing (PPR0) and 30 d postpartum (PPR30)^a

Trait	${\sigma }_a^2$	${\sigma }_{pe}^2$	${\sigma }_e^2$	${\sigma }_p^2$	c 2	h 2
NLB	0.03 ± 0.003	0.01 ± 0.003	0.31 ± 0.003	0.34 ± 0.003	0.02 ± 0.01	0.09 ± 0.01
NLW	0.02 ± 0.003	0.01 ± 0.003	0.33 ± 0.003	0.37 ± 0.003	0.03 ± 0.01	0.06 ± 0.01
PPR0	0.13 ± 0.03	0.02 ± 0.02	0.23 ± 0.01	0.38 ± 0.02	0.05 ± 0.06	0.35 ± 0.06
PPR30	0.09 ± 0.03	0.05 ± 0.02	0.23 ± 0.02	0.37 ± 0.02	0.13 ± 0.07	0.24 ± 0.07

^a ${\sigma }_a^2$ = direct additive variance; ${\sigma }_{pe}^2$ = permanent environmental variance; ${\sigma }_e^2$ = residual variance; ${\sigma }_p^2$ = phenotypic variance = ${\sigma }_a^2$ + ${\sigma }_{pe}^2$ + ${\sigma }_e^2$; c² = ${\sigma }_{pe}^2$/${\sigma }_p^2$; h² = heritability = ${\sigma }_a^2$/${\sigma }_p^2$.