(b)

IGF-1	Weight estimated breeding values (means ± SE, kg)
	BW	W3	W6	W9	W12
AA	−0.063 ± 0.04	1.18 ± 0.28	1.45 ± 0.47ab	0.965 ± 0.25	0.304 ± 0.30
AG	−0.083 ± 0.05	1.75 ± 0.35	2.4 ± 0.59a	0.945 ± 0.31	0.285 ± 0.37
GG	−0.24 ± 0.07	0.588 ± 0.51	0.155 ± 0.83b	0.527 ± 0.44	0.337 ± 0.53
P value	2.5ns	2.33ns	2.95*	0.48ns	0.0ns

  ^nsnot significant; *significant; ^aAG; ^bGG; ^abAA.