(a)

PIT-1	Weight estimated breeding values (means ± SE, kg)
	BW	W3	W6	W9	W12
P1	−0.066 ± 0.03	1.017 ± 0.23	0.963 ± 0.281	0.167 ± 0.20a	0.225 ± 0.595
P2	−0.082 ± 0.06	0.708 ± 0.44	0.438 ± 0.321	0.651 ± 0.39ab	0.338 ± 0.670
P3	−0.098 ± 0.04	1.61 ± 0.  27	1.40 ± 0.218	0.890 ± 0.24b	0.250 ± 0.654
P4	−0.27 ± 0.11	1.36 ± 0.64	2.65 ± 1.08	1.54 ± 0.57ab	0.128 ± 0.69
P value	1.40ns	1.92ns	1.19ns	3.66*	0.16ns