Breeding of landrace pigs with desirable characteristics

A nucleus herd of Landrace pigs for high-performance,specialized line breeding was collected from 6 bloodlines including 12 boars and 100 sows.The breeding result was estimated by a farm test using the closed and open breeding strategy and GBS software.After 5 years and three generations of breeding,the number of days for the pig to reach 100 kg reduced 8.51 days,or 5.20% decrease(P 0.05) with a significant EBV decline(P0.05).The mean living BFT decreased from 13.55 mm to 12.16 mm,or a 10.26% reduction(P0.05) with a significant EBV decline as well(P 0.05).