Table 2.

Association analysis of IGF1R DNA copy number variation (CNV) types with growth traits in cattle.

Breeds	Growth traits	CNV type (Mean $\pm$ SE)			$P$ value
		Loss	Normal	Gain
JN	Body height	131.97 $\pm$ 1.10${}^{\mathrm{A}}$	129.18 $\pm$ 0.76${}^{\mathrm{B}}$	126.85 $\pm$ 0.90${}^{\mathrm{B}}$	0.002
	Hip height	134.26 $\pm$ 1.33	132.21 $\pm$ 0.90	130.25 $\pm$ 1.11	0.060
	Body slanting length	154.45 $\pm$ 2.12	151.58 $\pm$ 1.32	148.25 $\pm$ 1.73	0.055
	Chest width	188.55 $\pm$ 2.00	186.05 $\pm$ 1.81	182.00 $\pm$ 1.75	0.077
	Rump length	48.71 $\pm$ 0.63	47.86 $\pm$ 0.56	47.13 $\pm$ 4.16	0.264
	Body weight	420.97 $\pm$ 14.16${}^{\mathrm{a}}$	399.95 $\pm$ 9.24${}^{\mathrm{ab}}$	374.49 $\pm$ 11.42${}^{\mathrm{b}}$	0.029
QC	Body height	134.91 $\pm$ 1.38${}^{\mathrm{A}}$	128.86 $\pm$ 0.74${}^{\mathrm{B}}$	129.05 $\pm$ 0.86${}^{\mathrm{B}}$	0.003
	Hip height	130.73 $\pm$ 1.27	126.27 $\pm$ 0.78	126.61 $\pm$ 0.91	0.054
	Body slanting length	139.09 $\pm$ 2.60	137.29 $\pm$ 1.07	138.02 $\pm$ 1.17	0.753
	Chest width	179.95 $\pm$ 4.05	177.35 $\pm$ 1.46	175.57 $\pm$ 1.64	0.448
	Rump length	45.27 $\pm$ 3.35	44.16 $\pm$ 2.63	43.31 $\pm$ 2.88	0.092
	Hucklebone width	23.82 $\pm$ 1.05${}^{\mathrm{a}}$	23.68 $\pm$ 0.61${}^{\mathrm{a}}$	21.25 $\pm$ 0.58${}^{\mathrm{b}}$	0.011
	Body weight	421.55 $\pm$ 25.43	402.53 $\pm$ 8.84	396.77 $\pm$ 9.92	0.247
XN	Body height	138.14 $\pm$ 1.90	134.61 $\pm$ 0.75	134.60 $\pm$ 0.45	0.091
	Hip height	140.29 $\pm$ 1.74	137.44 $\pm$ 0.53	137.77 $\pm$ 0.35	0.095
	Body slanting length	161.86 $\pm$ 2.44	159.53 $\pm$ 1.25	158.38 $\pm$ 0.86	0.421
	Chest width	194.43 $\pm$ 3.62	192.19 $\pm$ 1.43	192.53 $\pm$ 1.27	0.868
	Cannon circumference	19.86 $\pm$ 0.59	19.22 $\pm$ 0.22	18.90 $\pm$ 0.15	0.130
	Body weight	572.86 $\pm$ 22.69	548.36 $\pm$ 10.14	541.14 $\pm$ 6.12	0.329

Note: a and b denote values that differ significantly at $P\mathit{<}\mathrm{0.05}$; A and B denote values that differ significantly at $P\mathit{<}\mathrm{0.01}$. JN: loss (31), normal (57), and gain (40). QC: loss (11), normal (49), and gain (42). XN: loss (8), normal (35), and gain (73).