Table 2.

Body weights, morphometry (at birth and at 3 and 12 months of age) and postnatal growth rates in low and high BW male and female pigs

	Males		Females
	Low BW	High BW	Low BW	High BW
At birth:
BW (kg)	1.18 ± 0.05d	1.93 ± 0.05	1.10 ± 0.05d	1.86 ± 0.05
CRL (cm)	25.4 ± 0.7d	29.8 ± 0.4	25.2 ± 0.5d	29.6 ± 0.5
AC (cm)	22.4 ± 0.8c	26.9 ± 0.8	21.6 ± 0.6d	26.7 ± 0.5
BMI (kg m−2)	18.26 ± 0.67b	21.83 ± 0.79	17.30 ± 0.31d	21.45 ± 0.68
Head length:BW (cm kg−1)	8.21 ± 0.63d	5.67 ± 0.23	8.97 ± 0.44d	5.65 ± 0.17
At 3 months:
CW (kg)	25.6 ± 4.6	36.3 ± 3.0	22.6 ± 1.8c	38.2 ± 4.1
CRL (cm)	72.0 ± 11.0	83.6 ± 2.6	75.9 ± 2.1	86.3 ± 5.3
AC (cm)	62.0 ± 12.0	77.9 ± 3.7	64.9 ± 2.5a	82.6 ± 7.1
BMI (kg m−2)	39.20 ± 12.33	49.39 ± 3.79	42.69 ± 1.86	51.60 ± 4.25
Head length:CW (cm kg−1)	1.17 ± 0.53	0.68 ± 0.07	0.91 ± 0.05	0.63 ± 0.15
At 12 months:
CW (kg)	168.8 ± 13.9	176.3 ± 9.9	140.0 ± 5.5a	162.5 ± 6.3
CRL (cm)	150.3 ± 11.3	140.0 ± 2.0	142.4 ± 2.1	150.0 ± 10.4
AC (cm)	139.5 ± 12.5	135.0 ± 5.0	143.4 ± 3.0	135.3 ± 8.2
BMI (kg m−2)	84.13 ± 6.85	94.52 ± 5.25	79.39 ± 4.51	73.66 ± 6.57
Head length:CW (cm kg−1)	0.23 ± 0.03	0.21 ± 0.01	0.218 ± 0.023	0.295 ± 0.050
GR 0–1 months (kg day−1)	0.272 ± 0.024d	0.354 ± 0.017	0.224 ± 0.011d	0.338 ± 0.023
GR 0–3 months (kg day−1)	0.308 ± 0.046d	0.455 ± 0.038	0.278 ± 0.020c	0.445 ± 0.046
GR 0–12 months (kg day−1)	0.535 ± 0.046	0.550 ± 0.039	0.429 ± 0.042	0.532 ± 0.038
FGR 0–1 months (kg day−1 kg−1)	0.195 ± 0.017a	0.146 ± 0.010	0.169 ± 0.009	0.141 ± 0.016
FGR 1–3 months (kg day−1 kg−1)	0.042 ± 0.008	0.051 ± 0.006	0.047 ± 0.003	0.056 ± 0.004
FGR 3–12 months (kg day−1 kg−1)	0.022 ± 0.002	0.017 ± 0.002	0.029 ± 0.003a	0.016 ± 0.002

Values are means ± s.e.m. Abbreviations as in Table 1. Low BW versus high BW within each sex (unpaired t test):

^aP < 0.05

^bP < 0.01

^cP < 0.005

^dP < 0.001. At 3 months: low BW males, n = 7; high BW males, n = 12; low BW females, n = 15; high BW females, n = 13. At 12 months: low BW males, n = 4; high BW males, n = 4; low BW females, n = 5; high BW females, n = 4.