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

Table 4.

Changes in blood physiological indices of newborn piglets when sows were fed diets with different sources and levels of Fe (n = 5).

Item	Fe level addition, mg/kg	d 1			d 21
Item	Fe level addition, mg/kg	RBC, 10¹²/L	HGB, g/L	HCT, %	RBC, 10¹²/L	HGB, g/L	HCT, %
Control	0	3.75^c	80.80^c	32.78^c	3.83	85.00^b	34.56^b
Fe-Gly¹	50	3.99^bc	90.20^bc	34.06^bc	4.02	94.40^ab	35.52^ab
	80	4.16^ab	95.60^ab	34.98^bc	4.13	100.80^ab	36.58^ab
	110	4.29^a	104.60^ab	36.60^a	4.22	106.60^a	38.18^a
	140	4.30^a	106.40^a	36.74^a	4.23	107.40^a	38.20^a
FeSO₄·H₂O¹	50	3.89^bc	89.20^bc	33.72^bc	3.96	91.00^ab	35.20^ab
	80	3.95^bc	92.40^ab	34.18^bc	4.07	92.00^ab	35.66^ab
	110	4.00^bc	93.80^ab	35.04^ab	4.10	94.60^ab	36.52^ab
	140	4.03^bc	95.80^ab	35.36^b	4.13	96.20^ab	36.64^ab
SEM		0.218	5.763	0.850	0.248	5.254	1.018
Control vs. Fe-Gly		0.005	0.023	0.001	0.005	0.009	0.032
Control vs. FeSO₄·H₂O		0.081	0.282	0.080	0.228	0.148	0.215
Fe-Gly vs. FeSO₄·H₂O		0.015	0.086	0.089	0.415	0.021	0.137
Fe-Gly	Linear	<0.001	<0.001	<0.001	0.001	0.001	0.002
	Quadratic	0.003	<0.001	<0.001	0.004	0.005	0.010
FeSO₄·H₂O	Linear	0.050	0.148	0.021	0.165	0.103	0.092
	Quadratic	0.141	0.359	0.075	0.375	0.266	0.249

Fe-Gly = ferrous glycine chelate; RBC = red blood cells; HGB = hemoglobin concentration; HCT = hematocrit.

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

Fe sources.