GB/T 8473-2008Shanghai white pig (English PDF)

3.1 Origin and main characteristics

Shanghai White is a cultivar, originating in Shanghai, with good meat quality, adaptability, calving more advantages; suitable for the production of lean

Commercial pig hybrid female parent.

3.2 physical characteristics

Body hair white, medium size, waist straight. Head moderately large, flat or slightly concave head, face, ears moderately large, slightly forward, mouth medium cylinder long. Ribs 14 pairs to 15 pairs. Stout limbs. Hips. Teat number is generally 7 pairs, symmetrically arranged. Shanghai White appearance photo reference

See Appendix A.

3.3 Reproductive Performance

3.3.1

in accordance with the provisions of NY/T 820 was measured.

3.3.2 Shanghai White estrus symptoms significantly

Sow about 6 months of age puberty, estrous cycle 21d, duration of estrus 3d ~ 4d; suitable early

Hotels of 8 months old, weighing 75kg or more.

3.3.3

gilts average litter size 10.0, the average number of born alive 9.0, average piglet birth weight head 1.2kg; sows average

Litter size 11.5, the average number of born alive 10.5, average piglet birth weight head 1.3kg.

3.4 Finishing Performance

3.4.1

in accordance with the provisions of NY/T 822 was measured.

3.4.2

dietary digestible energy levels 12.17MJ/kg ~ 12.25MJ/kg, crude protein 13.5% to 15.0% of the conditions, weight 25kg ~

When 90kg phase, daily gain 570g, feed conversion rate of 3.6.

3.5 Carcass Quality

3.5.1

in accordance with the provisions of NY/T 825 was measured.

3.5.2

In weighing 85kg ~ 90kg slaughter, slaughter rate of 68.6% on average, ham percentage of 27.3%, the sixth to seventh intercostal rib backfat thickness

25.6mm, thick-skinned 2.9mm, carcass plagioclase 74cm, loin eye area 27.4cm2, 52% lean carcass.

3.6 Meat Quality

3.6.1

in accordance with the provisions of NY/T 821 was measured.

3.6.2

flesh score (out of 5) 3.0 points or more, marbling score (out of 5) 2.5 points or more, muscle pH value of 6.0 to 6.4, the Department of

Hydraulic 88%.