High nutrient intake during the early postnatal period accelerates skeletal muscle fiber growth and maturity in intrauterine growth-restricted pigs

Table 2 Effects of the level of nutrient intake on the organ weights, organ to body weight ratios, and morphometry of intrauterine growth-restricted (IUGR) and normal birth weight (NBW) pigs

Items	ANI		HNI		SEM	P value
Items	IUGR	NBW	IUGR	NBW	SEM	BW	NI	BW × NI
Brain, g	58.0	60.4	63.3	56.7	7.2	0.585	0.837	0.255
Heart, g	31.1^a	42.3^b	36.4^a	50.6^c	3.8	< 0.001	0.003	0.439
Brain: BW, %	1.05^c	0.82^b	0.94^b,c	0.64^a	0.11	0.001	0.025	0.573
Heart: BW, %	0.56	0.57	0.54	0.57	0.05	0.406	0.605	0.559
HL, cm	17.8	18.5	18.8	17.0	2.1	0.632	0.801	0.272
AC, cm	35.4^a	42.1^b	37.8^a	45.5^c	1.9	< 0.001	0.012	0.608
CRL, cm	43.6^a	48.3^a,b	46.0^a,b	51.3^b	3.4	0.017	0.871	0.161
BMI, kg/m²	29.1^a	28.2^a	33.3^a,b	38.4^b	4.59	0.431	0.016	0.268
HL:BW, cm/kg	3.2^c	2.5^b	2.8^b,c	1.9^a	0.36	0.001	0.011	0.723

Data are presented as mean values with their standard errors, n = 6 in each group. Mean values within a row with different superscript letters (a, b, c) were significantly different between four groups (P < 0.05)
ANI adequate nutrient intake, HNI high nutrient intake, BW body weight, NI nutrient intake, HL head length, AC abdominal circumference, CRL crown-rump length, BMI body mass index

ISSN: 1865-3499