Table 5.

Genetic and phenotypic correlations among growth and ultrasound traits^1,2

	BWT	WWT	PWWT	WTUS	ADG50	ADG100	EMDUSa	EMDUSw	FATUSa	FATUSw
BWT		0.36 ± 0.01	0.31 ± 0.01	0.28 ± 0.03	0.35 ± 0.01	0.10 ± 0.01	0.15 ± 0.04	−0.07 ± 0.04	0.13 ± 0.04	−0.02 ± 0.04
WWT	0.50 ± 0.04		0.77 ± 0.01	0.71 ± 0.02	NC3	0.11 ± 0.01	0.42 ± 0.03	−0.11 ± 0.04	0.39 ± 0.03	0.04 ± 0.04
PWWT	0.46 ± 0.04	0.89 ± 0.01		NC	0.75 ± 0.01	0.69 ± 0.01	0.64 ± 0.02	−0.01 ± 0.04	0.52 ± 0.03	0.03 ± 0.05
WTUS	0.57 ± 0.12	0.82 ± 0.06	NC		0.69 ± 0.02	0.62 ± 0.02	0.66 ± 0.02	−0.02 ± 0.04	0.52 ± 0.03	−0.05 ± 0.05
ADG50	0.49 ± 0.04	NC	0.89 ± 0.01	0.77 ± 0.06		0.11 ± 0.01	0.41 ± 0.03	−0.11 ± 0.04	0.38 ± 0.03	0.03 ± 0.04
ADG100	0.27 ± 0.05	0.49 ± 0.04	0.82 ± 0.02	0.56 ± 0.09	0.51 ± 0.04		0.44 ± 0.03	0.00 ± 0.04	0.32 ± 0.04	−0.01 ± 0.05
EMDUSa	0.38 ± 0.18	0.36 ± 0.12	0.54 ± 0.08	0.40 ± 0.14	0.34 ± 0.13	0.22 ± 0.14		NC	0.41 ± 0.03	0.10 ± 0.04
EMDUSw	−0.17 ± 0.13	−0.41 ± 0.11	−0.28 ± 0.11	−0.47 ± 0.15	−0.37 ± 0.11	−0.25 ± 0.11	NC		0.06 ± 0.04	0.11 ± 0.04
FATUSa	0.21 ± 0.15	0.47 ± 0.10	0.63 ± 0.08	0.58 ± 0.10	0.40 ± 0.10	0.25 ± 0.12	0.42 ± 0.16	−0.13 ± 0.16		NC
FATUSw	−0.16 ± 0.14	0.02 ± 0.12	−0.02 ± 0.11	−0.07 ± 0.15	−0.03 ± 0.12	−0.03 ± 0.12	0.29 ± 0.19	0.32 ± 0.13	NC

¹Phenotypic and genetic correlation estimates are presented above and below the diagonal, respectively, and are followed by their approximate standard error.

²ADG50 = pre-weaning average daily gain; ADG100 = post-weaning average daily gain; BWT = birthweight; EMDUS = ultrasonically measured eye muscle depth; FATUS = ultrasonically measured fat depth; PWWT = post-weaning weight; WTUS = scanning weight; WWT = weaning weight. Ultrasound eye muscle and fat depth measurements adjusted to a constant age (EMDUSa, FATUSa) or scanning weight (EMDUSw, FATUSw).

³NC: Model did not converge.