. 2018 Jan 31;4(2):197–202. doi: 10.1016/j.aninu.2018.01.002

Table 2.

Changes in newborn piglets' relative organ weight when sows were fed diets with different sources and levels of Fe (n = 5).

Item	Fe levels addition, mg/kg	Relative organ weight¹, g/kg				Piglet birth weight, kg
Item	Fe levels addition, mg/kg	Heart	Liver	Spleen	Kidney	Piglet birth weight, kg
Control	0	6.91	24.09	1.06^b	7.36^b	1.31^a
Fe-Gly²	50	6.98	24.91	1.16^ab	7.57^ab	1.39^a
	80	7.01	24.98	1.20^ab	7.72^ab	1.44^a
	110	7.00	25.51	1.25^a	7.90^a	1.48^b
	140	6.98	25.53	1.26^a	7.90^a	1.46^ab
FeSO₄·H₂O²	50	6.91	24.48	1.12^ab	7.46^ab	1.34^a
	80	6.88	24.65	1.16^ab	7.57^ab	1.39^a
	110	6.94	24.91	1.19^ab	7.57^ab	1.40^a
	140	6.96	24.95	1.21^ab	7.60^ab	1.38^a
SEM		0.239	0.845	0.069	0.259	0.053
P-value
Control vs. Fe-Gly		0.581	0.222	0.035	0.037	0.026
Control vs. FeSO₄·H₂O		0.914	0.403	0.065	0.238	0.193
Fe-Gly vs. FeSO₄·H₂O		0.474	0.376	0.225	0.046	0.047
Fe-Gly	Linear	0.683	0.175	0.016	0.009	0.028
	Quadratic	0.846	0.394	0.051	0.033	0.075
FeSO₄·H₂O	Linear	0.741	0.346	0.029	0.180	0.175
	Quadratic	0.908	0.643	0.092	0.397	0.355

Fe-Gly = ferrous glycine chelate.

^a,b Mean values within a column without a common superscript differ significantly (P < 0.05).

Determined according to: Relative organ weight (g/kg) = Organ weight (g)/Live body weight (kg), Lu et al. (1996).

Fe sources.