Table 6. Lean meat weights of seven primal cuts as measured by AutoFom III¹⁾

Items	Gilt²⁾	Barrow
Belly
1+ Grade	12.12 ± 0.52^b	12.29 ± 0.54^a
1 Grade	12.24 ± 0.90^b	12.40 ± 0.90^a
2 Grade	12.19 ± 1.57^b	12.64 ± 1.54^a
All Grades	9.94 ± 0.70^b	10.10 ± 0.68^a
Boston Butt
1+ Grade	4.55 ± 0.20^a	4.46 ± 0.20^b
1 Grade	4.59 ± 0.32^a	4.45 ± 0.32^b
2 Grade	4.56 ± 0.49^a	4.43 ± 0.48^b
All Grades	3.89 ± 0.32^a	3.76 ± 0.33^b
Rib
1+ Grade	3.67 ± 0.11^a	3.65 ± 0.12^b
1 Grade	3.70 ± 0.21^a	3.65 ± 0.21^b
2 Grade	3.68 ± 0.35^a	3.65 ± 0.34^b
All Grades	3.67 ± 0.23^a	3.62 ± 0.23^b
Tenderloin
1+ Grade	0.99 ± 0.05^a	0.96 ± 0.06^b
1 Grade	1.00 ± 0.08^a	0.96 ± 0.08^b
2 Grade	0.99 ± 0.11^a	0.95 ± 0.11^b
All Grades	0.99 ± 0.08^a	0.96 ± 0.08^b
Loin
1+ Grade	5.83 ± 0.48^a	5.60 ± 0.49^b
1 Grade	5.89 ± 0.61^a	5.55 ± 0.62^b
2 Grade	5.84 ± 0.78^a	5.45 ± 0.82^b
All Grades	6.43 ± 0.64^a	6.11 ± 0.68^b
Picnic shoulder
1+ Grade	8.22 ± 0.28^a	5.60 ± 0.49^b
1 Grade	8.29 ± 0.48^a	5.55 ± 0.62^b
2 Grade	8.27 ± 0.78^a	8.09 ± 0.75^b
All Grades	7.98 ± 0.54^a	7.75 ± 0.57^b
Ham
1+ Grade	17.31 ± 0.77^a	16.95 ± 0.79^b
1 Grade	17.45 ± 1.17^a	16.90 ± 1.18^b
2 Grade	17.33 ± 1.74^a	16.75 ± 1.74^b
All Grades	16.29 ± 1.19^a	15.69 ± 1.27^b

Each value is presented as mean ± SD.
Population numbers for gilts and barrows were 176,461 and 173,718, respectively.
Means within the same row with different superscripts are significantly different (p < 0.05).