不同因素对猪卵母细胞体外成熟培养的影响

本试验旨在探讨不同外源激素组合的添加、胰岛素—转铁蛋白—亚硒酸钠(ITS)的添加、不同培养皿、石蜡油的添加对卵母细胞体外成熟培养(IVM)的影响。结果显示:①孕马血清促性腺激素+人绒毛膜促性腺激素+促卵泡素(PMSG+HCG+FSH)组高于促卵泡素+促黄体素(FSH+LH)组和尿促性腺激素(hMG)组,相互之间差异显著(80.1%、68.3%、53.3%,P<0.05);②添加1% ITS到猪卵母细胞培养液中对卵母细胞成熟率无显著提高(P>0.05),但显著提高了孤雌激活后孤雌胚胎的卵裂率和囊胚率(63.3%、55.1%,18.7%、12.1%,P<0.05);③凹槽皿组猪卵母细胞成熟率显著高于四孔板和30 mm塑料皿组(73.3%、68.0%、68.3%,P<0.05);④石蜡油的添加对卵丘细胞扩展和卵母细胞体外成熟率均有显著提高(84.8%、69.9%,P<0.05)。结果表明培养液中添加PMSG+HCG+FSH和ITS及选用凹槽皿、成熟培养液上覆石蜡油可提高猪卵母细胞IVM效果。

Effect of Different Factors on in Vitro Maturation of Porcine Oocytes

Effects of several factors such as exogenous hormones and ITS,culture methods,paraffin oil on in vitro maturation (IVM) for porcine oocytes were studied.The results indicated that,the group supplemented with PMSG+HCG+FSH was significantly higher than FSH+LH and HMG in mature media with regard to the mature rates of porcine oocytes (80.1% vs 68.3% vs 53.3%,P<0.05);the mature rate of porcine oocytes cultured in mature media supplemented with 1% ITS was not improved,while the cleavage rate and blastocyst rate of parthenogenesis embryos were significantly increased (63.3% vs 55.1%,18.7% vs 12.1%,P<0.05);the groove dish group was significantly higher than four-hole plate and 30 mm plastic dish group in terms of the mature rates of porcine oocytes (73.3% vs 68.0% vs 68.3%,P<0.05);mature media supplemented with paraffin oil was significantly increased the cumulus expansion and maturation rates for porcine oocytes (84.8% vs 69.9%,P<0.05). The results showed that the mature rates of porcine oocytes cultured in groove dish,supplemented with paraffin oil,PMSG+HCG+FSH and ITS were significantly improved.