GB/T 8477-2008Zhejiang middle white pig (English PDF)

3.1 Origin

White Zhejiang origin to Hangzhou and Huzhou City, Zhejiang Province, mainly in the area of Hangzhou, Jiaxing and Huzhou City in Zhejiang Province and so on.

3.2 species composition

Zhejiang White with Landrace, Yorkshire, Jinhua pigs bred resources.

3.3 conformation

Coat all white, medium size, lighter head and neck, straight or slightly concave face, ears moderately large, was leaning forward or slightly drooping, back and waist long, relatively flat belly line

Straight, legs hip muscle fullness, more than seven pairs of nipples. Adult boar weighing 180kg ~ 200kg, sow 150kg ~ 180kg. Zhejiang White

See Appendix A. Appearance Photos

3.4 Performance

3.4.1 reproductive performance

Accordance with the provisions NY/T 820 was measured. Sow puberty 5.5 months to 6 months of age, the adaptation of 7.5 months to 8 months of age, early ligand

Weight 100kg ~ 110kg. Gilts total number born nine or more sows total number born 12 or more. Sows after weaning in general

Estrus within 7d. Estrus conception rate of 90%.

3.4.2 Growth Fattening Performance

Press 820 and NY/T 822 provisions NY/T were measured. 180 day weight of 90kg, 25kg ~ 90kg liveweight average

ADG 600g ~ 650g, feed conversion rate of 3.3, equivalent to digestible energy 15.6MJ, crude protein digestion 350g ~ 420g.

3.4.3 carcass quality

Press the NY/T 821 and the provisions of NY/T 825 was measured. When weight 90kg slaughter, slaughter rate of 73%, average backfat thickness

25mm, thick-skinned 2mm, eye muscle area of 32cm2, ham percentage of 30%, 58% lean meat, meat color score 3 points, intramuscular fat content

2%.

3.4.4 Crossbreeding

In Zhejiang White as female parent and Duroc, Landrace, Yorkshire parent of the hybridization, the average total number born 12 or more,

21-day-old piglets bred more than 10.5, more than 21-day litter weight 50kg. Du Zhejiang hybrid pigs weighing up to 100kg at 170 days of age.