8Biggs C, Tilton JE, Craigon J, et al. Comparison of follicular heterogeneity and o- varian characteristics in Meishan and large- white hybrid pigs. Journal of Reproduction and Fertility, 1993, 97(1):263-269.
9Haley CS, Lee GJ, Ritchieal M. Com- parative reproductive performance in Meishan and Large White pigs and their crosses. Animal Science, 1995, 60(2):259-267.
10Drianeourt M A, Quesnel H, Meduri G, et al. Luteinization and proteolysis in ovarian follicles of Meisha and Large White gilts during the preovulatory period. Journal of Reproduc- tion and Fertility, 1998, 114(2):13.