| Seasonal influence on the development of parthenotes and cloned embryos in pigs |
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| 作者姓名： | Zhang Kun Zhang Yunhai Pan Dengke Ma Yufang Wei Hengxi Zhang Jian Li Xuyang Wang Shaohu Li Yan Dai Yunping and Li Ning |
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| 作者单位： | 1. State Key Laboratory for Agrobiotechnology，College of Biological Science，China Agricultural University，Beijing 100094，China; 2. JiPulin Biotech Ltd.，Beijing 100094，China; 3. Danish Institute of Agricultural Sciences，8830 Tjele，Denmark; 4. College of Animal Science and Technology，Anhui Agricultural University，Hefei 230036，China; 5. Institute of Animal Sciences，Chinese Academy of Agricultural Sciences，Beijing 100094，China; 6. Animal Clinical Hospital，China Agricultural University，Beijing 100094，China; 7. Hebei Minghui Group of Pigs Breeding，Sanhe 065200，China |
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| 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 (P<0.05). However, no significant difference was found in the rate of oocytes progressing to MⅡ 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), and an 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.
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Seasonal influence on the development of parthenotes and cloned embryos in pigs |
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| Zhang Kun,Zhang Yunhai,Pan Dengke,Ma Yufang,Wei Hengxi,Zhang Jian,Li Xuyang,Wang Shaohu,Li Yan,Dai Yunping and Li Ning.Seasonal influence on the development of parthenotes and cloned embryos in pigs[J].Progress in Natural Science,2007,17(10):1172-1176. |
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| Authors: | Zhang Kun Zhang Yunhai Pan Dengke Ma Yufang Wei Hengxi Zhang Jian Li Xuyang Wang Shaohu Li Yan Dai Yunping and Li Ning |
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| Institution: | 1. State Key Laboratory for Agrobiotechnology, College of Biological Science, China Agricultural University, Beijing 100094, China; 2. JiPulin Biotech Ltd., Beijing 100094, China; 3. Danish Institute of Agricultural Sciences, 8830 Tjele, Denmark; 4. College of Animal Science and Technology, Anhui Agricultural University, Hefei 230036, China; 5. Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100094, China; 6. Animal Clinical Hospital, China Agricultural University, Beijing 100094, China; 7. Hebei Minghui Group of Pigs Breeding, Sanhe 065200, China |
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| Abstract: | |
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| Keywords: | pig cloned parthenogenetic season |
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