. 2023 Jan 5;13:1070304. doi: 10.3389/fgene.2022.1070304

TABLE 3.

Estimates of genetic ^a (lower diagonal) and phenotypic ^a (upper diagonal) correlations among production, feed efficiency and immune traits measured during the growing period (9–20 weeks of age).

Traits ^b	BW₁₂	ADG	MBW	ADFI	RFI	FCR	KLH-IgM	NDV-IgG
BW₁₂		0.47 ± 0.04^***	0.82 ± 0.01^***	0.44 ± 0.04^***	0.36 ± 0.09^***	−0.42 ± 0.09^**	0.04 ± 0.03	0.05 ± 0.03
ADG	0.43 ± 0.09^***c		0.69 ± 0.02^***	0.72 ± 0.04^***	−0.03 ± 0.12	−0.94 ± 0.01^**	0.18 ± 0.05^***	−0.18 ± 0.05
MBW	0.75 ± 0.02^***	0.86 ± 0.05^***		0.61 ± 0.20^**	−0.01 ± 0.14	−0.53 ± 0.03^***	0.27 ± 0.06^***	0.12 ± 0.06
ADFI	0.78 ± 0.05^***c	0.58 ± 0.18^**	0.44 ± 0.16^**		0.05 ± 0.06	0.88 ± 0.06^***	0.56 ± 0.22^**	0.20 ± 0.18
RFI	−0.66 ± 0.18^*	−0.47 ± 0.08^**	−0.52 ± 0.12^**	0.60 ± 0.15^**		0.22 ± 0.04^***	0.02 ± 0.06	0.04 ± 0.05
FCR	0.44 ± 0.18^*	−0.79 ± 0.06	0.47 ± 0.14^***	0.49 ± 0.16^***	0.51 ± 0.11^**		−0.18 ± 0.15	0.10 ± 0.08
KLH-IgM	−0.47 ± 0.15^**	−0.22 ± 0.19	0.46 ± 0.17^**	0.41 ± 0.13^**	0.62 ± 0.17^***	0.47 ± 0.34		0.01 ± 0.03
NDV-IgG	0.06 ± 0.66	−0.56 ± 0.11^**	0.49 ± 0.15^***	0.34 ± 0.09^**	0.58 ± 0.13^***	0.03 ± 0.57	−0.55 ± 0.38

^{^a}

± SE, standard errors.

^{^b}

BW₁₂ is body weight at week 12 of age; ADG, is average daily gain; MBW, is metabolic weight; ADFI, is average daily feed intake; RFI, is residual feed intake; FCR, is feed conversion ratio; KLH-IgM, is natural antibody of IgM isotype binding to KLH, antigen measured at 16 weeks; NDV-IgG, is specific antibody IgG isotype binding to NDV, antigen measured at 16 weeks of age.

***p < 0.001, **p < 0.01, *p < 0.05.