Table 3.

Effects of a second iron injection administered on days 6 to 8 on individual pig bodyweight and average daily gain¹

Item	Treatment		SEM	P-value
	CON	+Fe
Bodyweight, kg
Birth (day 0)	1.53	1.55	0.01	0.53
Enrollment (days 6 to 8)	2.87	2.85	0.01	0.44
Weaning (days 22 to 25)	7.44	7.40	0.06	0.67
Week 2	10.51	10.85	0.11	0.03
Week 4	19.08	19.96	0.22	0.01
Week 5	27.63	28.15	0.27	0.17
Week 7	40.10	40.77	0.35	0.18
Week 9	53.69	54.72	0.49	0.13
Week 11	67.28	68.49	0.60	0.15
Week 13	81.03	82.70	0.76	0.11
Week 15	91.77	93.63	0.83	0.11
Week 17	103.89	106.88	0.97	0.03
End of study	112.79	115.77	1.03	0.04
Average daily gain, kg
Preweaning2	0.29	0.29	0.004	0.73
Nursery3	0.55	0.56	0.01	0.10
Finisher4	0.91	0.94	0.01	0.05
Wean to end of study	0.81	0.83	0.01	0.04
Enrollment to end of study	0.75	0.78	0.01	0.04

¹Data represents 144 pigs or 72 pigs/treatment. 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.

²Preweaning period included enrollment to weaning.

³Nursery period included weaning to week 5 postweaning.

⁴Finisher period included week 5 postweaning to the end of study.