Seasonal influence on the development of parthenotes and cloned embryos in pigs

文献类型： 外文期刊

第一作者： Zhang Kun

作者： Zhang Kun;Zhang Yunhai;Pan Dengke;Ma Yufang;Wei Hengxi;Zhang Jian;Li Xuyang;Wang Shaohua;Li Yan;Dai Yunping;Li Ning

作者机构：

关键词： pig;cloned;parthenogenetic;season

期刊名称：PROGRESS IN NATURAL SCIENCE （ 影响因子：0.704； 五年影响因子：0.688 ）

ISSN：

年卷期：

页码：

收录情况： SCI

摘要： Seasonal influence on the developmental ability of porcine embryos was studied by comparisons of the number of cumulus-oocytes-complexes (COCs) per ovary pair and meiotic maturation ability of oocytes in different seasons; and by the observations on developmental competence of the parthenogenetic oocytes and cloned embryos collected from different seasons. We found that the number of COCs per ovary pairs was significantly higher in spring compared to the other seasons ( F < 0. 05 ) . However, no significant difference was found in the rate of oocytes progressing to M II in four seasons ( P < 0. 05 ) . In addition, the rate of blastocyst formation of parthenogenetic embryos in summer was obviously declined compared to the other seasons (P<0.05), andan increased blastocyst rate of cloned porcine embryos was found in spring compared to autumn and winter (P<0. 05) . The results suggest that there should be a seasonal influence on the developmental competence of porcine embryos.

分类号： N1

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