Table 3. Pig carcass weight and backfat thickness¹⁾

Items	Gilt²⁾	Barrow
Carcass weight
1+ grade	87.57 ± 2.65	87.83 ± 2.62
1 grade	88.65 ± 5.41^a	88.01 ± 5.32^b
2 grade	88.16 ± 9.63^b	88.54 ± 9.19^a
All of grades	88.21 ± 5.97^a	88.10 ± 6.13^b
Backfat thickness
1+ grade	20.87 ± 2.04	21.68 ± 1.91
1 grade	20.69 ± 3.92^b	22.43 ± 3.64^a
2 grade	20.07 ± 6.91^b	24.51 ± 6.70^a
All of grades	20.61 ± 4.33^b	22.78 ± 4.47^a

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).