Table 5.

Effects of a second iron injection administered on days 6 to 8 on carcass traits¹

Item	Treatment		SEM	P-value
	CON	+Fe
Slaughter weight, kgS	113.13	114.72	1.75	0.53
Hot carcass weight, kgS	82.75	84.85	1.49	0.33
Cold carcass weight, kgS	80.93	82.99	1.48	0.34
Dressing, %	73.15	73.91	0.43	0.22
Shrink loss, %	2.20	2.20	0.06	0.97
Carcass length, cm	81.73	82.37	0.66	0.50
Back fat depth, cm
First rib	3.37	3.43	0.22	0.84
Last rib	2.16	2.60	0.23	0.19
10th ribS	1.82	1.85	0.15	0.88
Last lumbar	1.57	1.50	0.14	0.76
Loin muscle area, cm2	44.06	45.32	1.69	0.60
Absolute organ weight, g
Liver	1,676	1,679	32.4	0.95
Spleen	161	169	7.7	0.47
Relative organ weight, % of body weight
Liver	1.48	1.47	0.03	0.68
Spleens	0.14	0.15	0.01	0.53

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 weights compared to gilts, P ≤ 0.05.

^sSignificant sex effect present where gilts had a heavier relative spleen weight compared to barrows, P < 0.01.