Table 3.

Effect of the average fecal egg count (FEC) of the management group on estimates of variance components and variance component ratios and their SE from animal models for weaning (WFEC) and postweaning (PWFEC) fecal egg counts

Variable	Itema	Management groups with mean FEC of
		<500	500 to 1,500	>1,500
WFEC	σ2a	0.02 ± 0.02	0.08 ± 0.03	0.07 ± 0.03
	σ2l	0.03 ± 0.02	0.06 ± 0.02	0.05 ± 0.02
	σ2e	0.21 ± 0.02	0.19 ± 0.02	0.26 ± 0.03
	σ2p	0.26 ± 0.01	0.33 ± 0.01	0.38 ± 0.02
	h 2	0.09 ± 0.09	0.25 ± 0.08	0.18 ± 0.08
	l 2	0.13 ± 0.08	0.18 ± 0.05	0.13 ± 0.05
PWFEC	σ2a	0.05 ± 0.02	0.08 ± 0.02	0.10 ± 0.03
	σ2l	0	0.05 ± 0.02	0.01 ± 0.02
	σ2e	0.14 ± 0.01	0.24 ± 0.02	0.26 ± 0.02
	σ2p	0.18 ± 0.01	0.37 ± 0.01	0.37 ± 0.01
	h 2	0.25 ± 0.08	0.21 ± 0.06	0.27 ± 0.07
	l 2	0	0.13 ± 0.05	0.03 ± 0.04

^aσ²_a = direct additive variance; σ²_l = variance due to litter effects; σ²_e = residual variance; σ²_p = phenotypic variance = σ²_a + σ²_l + σ²_e; h² = heritability = σ²_a/σ²_p; l² = σ²_l/σ²_p.