摘要
The experiments of serial nuclear transfer were conducted between Boer goat and rabbit. The enucleated oocytes of rabbit were used as recipients while the blastomeres of goat morula was used as nuclear donor. The reconstructed embryos developing to morula were used as donor for serial cloning. As a result, two generations of reconstructed embryos were obtained, including 58 first generation reconstructed embryos and 14 second generation reconstructed embryos. The fusion rates were 79.5 and 70%, respectively, and there was no significant difference between them （P〉0.05）. The cleavage rates were 75.9 and 28.6% respectively with significant difference （P〈0.01）. No blastocyst was obtained from the second generation reconstructed embryos while 13.8% of first generation reconstructed embryos developed to blastocyst.
The experiments of serial nuclear transfer were conducted between Boer goat and rabbit. The enucleated oocytes of rabbit were used as recipients while the blastomeres of goat morula was used as nuclear donor. The reconstructed embryos developing to morula were used as donor for serial cloning. As a result, two generations of reconstructed embryos were obtained, including 58 first generation reconstructed embryos and 14 second generation reconstructed embryos. The fusion rates were 79.5 and 70%, respectively, and there was no significant difference between them （P〉0.05）. The cleavage rates were 75.9 and 28.6% respectively with significant difference （P〈0.01）. No blastocyst was obtained from the second generation reconstructed embryos while 13.8% of first generation reconstructed embryos developed to blastocyst.
