Table 5.

Genetic and phenotypic parameters for immune competence traits¹

	Ab-IR2	Cell-IR2	FT2	CS2	WtGain2
Vp3	4.42	0.66	11.22	0.32	1.25
Vg3	1.47	0.18	1.38	0.03	0.16
Ab-IR	0.33 ± 0.09	0.15 ± 0.03	−0.01 ± 0.03	0.05 ± 0.03	−0.01 ± 0.04
Cell-IR	0.48 ± 0.19	0.27 ± 0.08	0.08 ± 0.03	−0.05 ± 0.03	0.11 ± 0.03
FT	0.63 ± 0.31	0.60 ± 0.29	0.12 ± 0.07	−0.22 ± 0.03	0.07 ± 0.03
CS	−0.09 ± 0.32	−0.40 ± 0.33	−0.45 ± 0.39	0.10 ± 0.06	−0.04 ± 0.03
WtGain	0.16 ± 0.29	−0.10 ± 0.31	0.28 ± 0.40	−0.20 ± 0.44	0.13 ± 0.07

¹Heritabilities are shown in bold, phenotypic correlations above the diagonal and genetic correlations below the diagonal.

²Cell-IR = cell-mediated immune responses, Ab-IR = antibody-mediated immune responses, FT = flight time, CS = crush score, WtGain = average daily weight gain during the yard weaning period.

³Vp = total phenotypic variance, Vg = genetic variance.