Table 6.
Effects of a second iron injection administered on days 6 to 8 on primal cuts1
| Item | Treatment | SEM | P-value | |
|---|---|---|---|---|
| CON | +Fe | |||
| Absolute primal cut weight, kg | ||||
| Boston buttS | 3.72 | 3.71 | 0.08 | 0.96 |
| Picnic shoulder | 3.90 | 3.98 | 0.13 | 0.65 |
| Loin | 9.95 | 10.67 | 0.23 | 0.04 |
| BellyS | 6.34 | 6.30 | 0.16 | 0.87 |
| Spare rib | 1.55 | 1.63 | 0.04 | 0.14 |
| Ham | 9.04 | 9.28 | 0.18 | 0.35 |
| Relative primal cut weight, % slaughter weight | ||||
| Boston butt | 3.29 | 3.23 | 0.06 | 0.53 |
| Picnic shoulder | 3.44 | 3.46 | 0.08 | 0.85 |
| Loin | 8.80 | 9.30 | 0.15 | 0.03 |
| Belly | 5.60 | 5.48 | 0.10 | 0.40 |
| Spare rib | 1.37 | 1.42 | 0.03 | 0.27 |
| Ham | 8.00 | 8.09 | 0.12 | 0.59 |
1Treatment means are reported as least squares means from 12 pigs per treatment; data is based on the left side of the carcass. 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.
SSignificant sex effect present where barrows had heavier primal cuts compared to gilts, P ≤ 0.05.