Table 4.

Effects of a second iron injection administered on days 6 to 8 on pen growth performance¹

Item	Treatment		SEM	P-value
	CON	+Fe
Average daily gain, kg
Nursery2	0.55	0.56	0.02	0.57
Finisher 3,S	0.91	0.94	0.02	0.29
Wean to end of studyS	0.81	0.83	0.01	0.32
Average daily feed intake, kg
Nursery2	0.98	0.98	0.03	0.97
Finisher3,S	2.28	2.31	0.05	0.73
Wean to end of studyS	1.88	1.90	0.04	0.74
Gain/feed
Nursery2	0.56	0.57	0.01	0.11
Finisher3	0.40	0.41	0.005	0.41
Wean to end of study	0.43	0.44	0.004	0.33

¹Data represents 12 pens/treatment with pens stocked at 6 pigs/pen. All pigs received an initial iron injection (200 mg Fe) at birth; the +Fe group received a second iron injection (200 mg Fe) at enrollment.

²Nursery period included weaning to week 5.

³Finisher period included week 5 to the end of study.

^SSignificant sex effect present where barrows had a greater ADG and ADFI compared to gilts, P ≤ 0.05.