Genetic markers associated with bone composition in Rhode Island Red laying hens

Table 6 Estimate of additive genetic variance (diagonal), genetic correlation (below diagonal) with standard errors, in addition to the partial phenotypic correlations (above diagonal), for XRD traits

	Tibia density	Tibia breaking strain	Crystal scattering	Crystal orientations	Crystal oriented fraction
Tibia density	0.44 ± 0.06	0.67	0.05	− 0.11	0.05
Tibia breaking strain	0.33 ± 0.05	0.42 ± 0.06	0.02	− 0.05	0.03
Crystal scattering	0.03 ± 0.03	− 0.02 ± 0.04	0.04 ± 0.05	− 0.03	− 0.04
Crystal orientations	− 0.06 ± 0.04	− 0.04 ± 0.04	0.00 ± 0.04	0.05 ± 0.04	− 0.21
Crystal oriented fraction	0.02 ± 0.03	0.03 ± 0.03	− 0.01 ± 0.03	0.00 ± 0.02	0.01 ± 0.03

XRD: X-ray diffraction; genetic correlations are estimated by multi-trait genomic restricted maximum likelihood; partial phenotypic correlations: phenotypes (adjusted for body weight) correlations

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