In this study, we examined factors affecting transgenic efficiency of porcine using pEGFP-N1 by intracytoplasmic injection of sperm(ICSI), including injecting temperature, 6-DMAP and BSA. The sperm is dead,frozed-thawed without protection. The oocytes were matured in vitro and transgenic embryos were produced by ICSI. The rate of embryos expressing GFP at the injecting temperature of 30 ℃ is significantly different from that at 38.5 ℃(40.07% vs 20.97%, P < 0.01). Transgenic blastocyst rate is significantly ...