Table 7.

Zinc concentration of plasma in sows during gestation and lactation

	Control		DDGS				P-value
Item	ZnSO4	PSZn	ZnSO4	PSZn	LowZn	SE	Diet	Zn source	Diet * Zn source
Plasma Zn, mcg/dL
Initial	69.6	67.0	66.8	72.1	—	2.9	0.67	0.62	0.16
Gestation1	70.0	75.0	75.3	73.3	—	3.6	0.54	0.63	0.25
Gest. LowZn2	—	—	—	—	57.9	2.2	—	—	—
Pre-farrow3	78.3	77.8	79.8	83.5	—	4.7	0.17	0.56	0.42
Lactation4	86.0	76.7	83.2	79.7	—	3.5	0.98	0.08	0.41
Lact. LowZn5	—	—	—	—	49.9	2.4	—	—	—
Weaning6	86.7	97.6	89.8	90.3	—	5.7	0.68	0.28	0.32

¹Samples collected on day 3 of gestation balance period.

²Samples collected on day 3 of LowZn balance period in gestation.

³Samples collected 24 h prior to expected farrowing date.

⁴Samples collected on day 3 of lactation balance period.

⁵Samples collected on day 3 of LowZn balance period in lactation.

⁶Samples collected on about day 21 of lactation.