Tạo dòng ông bà trên cơ sở trao đổi gen giữa lợn Landrace của Pháp và Mỹ và nhân giống chọn lọc qua 3 thế hệ
The experiments were conducted to evaluate the process of self-crossing to select and create a GP line on the basis of gene exchange between Landrace pigs imported from France and from the USA. Two pig groups of LVN1 (♂ French Landrace x ♀ American Landrace) and LVN2 (♂ American Landrace x ♀ French Landrace) were bred and selected through 3 generations. Results show that LVN2 pigs were selected as the GP line with the following main performances: In the growing period, ADG was 862.75 g/day, the lean meat was 59.71% and FCR was 2.47 kg. The semen quality of boars was 52.11 (billion/ time) in VAC. The reproductive performance: NB, NBA and NPW were 13.84; 12.65 and 12.22, respectively; The average weights of piglets at birth and weaning were 1.46 and 6.59 kg, respectively; the number of weaning piglets/sow/year was 28.47. The GP line of LVN2 meets the demands of our country's livestock production.
