Table 2.

Heritability (H²) and principal component analysis (PCA) of body weight and bone phenotypes in female HS rats^*

Phenotype	H2	PC1	PC2	PC3	PC4
Percent variation explained		46.3	10.6	8.5	8
Body weight	0.67	0.32	−0.14	−0.03	−0.24
Femur length	0.82	0.31	−0.28	0.17	−0.02
Head width	0.90	0.24	−0.10	0.59	0.16
Neck width	0.64	0.18	0.24	0.54	0.23
Axis length	0.90	0.15	−0.16	0.36	−0.25
Femur aBMD	0.71	0.34	0.04	−0.20	−0.10
Femur BMC	0.75	0.39	−0.05	−0.11	−0.07
Lumbar aBMD	0.42	0.31	−0.04	−0.23	−0.23
Lumbar BMC	0.34	0.36	−0.10	−0.13	−0.18
Femur UF	0.69	0.26	0.07	−0.21	0.53
Femur W	0.14	0.22	0.00	−0.18	0.62
Femur neck UF	0.72	0.27	0.49	−0.05	−0.11
Femur neck W	0.67	0.06	0.74	0.07	−0.17

^*H² and PCA values > 0.3 are indicated in bold