4Lechniak D,Szczepankiewicz D,Kauss D,et al.IVM media,oocytes diameter and donor genotype at RYR1 locus in relation to the incidence of porcine dip loid oocytes aftermaturation in vitro[J].Theriogenology.2005,64:202-212.
6Abeydeera L R,Wang W H,Cantley T C,et al.Development viability of pig oocytes maturated in a protein-free medium containing epidermal growth factors.Theriognology,2000,54:787-797.
7Delos Reyes M,Lapierre L,Saenz LEffect of the length of the hormal supplementation on in vitro maturation of porcine oocytes[J].Theriogenology,2001,55(1):468.
9Kelly J M, Kleemann D O, Walker S K. Enhanced efficiency in the production of offspring from 4-to 8-week-old lambs [J]. Theriogenology, 2005, 63(7): 1876-1890.
10Gou K M, Guan H, Bai J H, et al. Field evaluation of juvenile in vitro embryo transfer (JIVET) in sheep[J]. Anita Reprod Sci, 2009, 112(3-4): 316-324.