This research was excecuted at the Branch of Research and Development Center for animal and plant breedings of Ninh Binh province from 2011 to 2014 to evaluate reproductive performance for Wild, Meishan and crossbred FI(Wild x Meishan) sows mated by Wild boars. Four Wild boars, 8 Wild sows, 8 Meishan sows and 32 crossbred FI(Wild x Meishan) sows were used for this study. The results showed that fist mating age of Meishan girls (144,25 days) was earlier than that of Wild (228,50 days) and FI(Wild x Meishan) (158,39 days). The first farrowing age of Meishan (265,88 days) was sooner than that of Wild (358,63 days) and Fl(Wild x Meishan) (283,93 days). Litter size at birth of Meishan were bigger than that of Wild and Fl(Wild x Meishan): 15,19
10.77 and 7.28 piglets per litter
litter size at weaning was 12.88
9.58 and 6.63 piglets per litter, respectively.