Table 2.
Effects of a second iron injection administered on days 6 to 8 on hemoglobin (Hb) concentration1
| Item | Treatment | SEM | P-value | |
|---|---|---|---|---|
| CON | +Fe | |||
| Hb, g/dL | ||||
| Birth (day 0)S | 9.9 | 9.9 | 0.21 | 0.93 |
| Enrollment (days 6 to 8) | 9.1 | 8.9 | 0.12 | 0.13 |
| Weaning (days 22 to 24) | 10.7 | 13.1 | 0.15 | <0.01 |
| Nursery2 | 11.7 | 12.1 | 0.13 | 0.01 |
| End of study | 11.9 | 12.0 | 0.14 | 0.66 |
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.
2Nursery period was at the end of week 5 postweaning.
SSignificant sex effect present where males had a greater Hb at birth compared to females, P ≤ 0.05.