The world's first somatic cloned goat was born in China (6.18)

OA show ('918 '); the world's first somatic cloned goat was born at 12:58 on the 16th at Shaanxi northwest agricultural and Forestry University of science and technology The somatic cloned goat, 36 cm in length, 30 cm in height, 2.8 kg in weight and gray and blue in hair, is named Yuanyuan, which is normal in development, lively and lovely The birth of somatic cloned goat marks that China's technology in this field has reached the world's advanced level Zhang Yong, Professor of Bioengineering Research Institute of northwest agricultural and Forestry University of China, who is responsible for the research of this achievement, has been engaged in the theoretical and technical research of mammalian development bioengineering for many years Since 1998, he has started the research on goat embryo cloning He took the lead in overcoming the technical difficulties of embryo segmentation and frozen embryo segmentation of livestock in China His success rate has reached the international advanced level Later, he revealed the rules of interaction between goat and bovine oocytes and the molecular regulation of oocyte generation, development and maturation For the first time in the world, goat preantral follicle oocytes were cultured in vitro to mature and cleaved embryos were obtained In 1990, he obtained the world's first batch of embryo cloned goats, and then obtained the world's first batch of 45 embryo cloned goats of the first, second, third, fourth and fifth generations and the world's first in vitro trophoblast cloned goat, forming the world's largest embryo cloned sheep The first frozen embryo cloned calf in China was obtained in 1997 On January 14, this year, Jining Qingshan sheep cloned embryos were successfully implanted into Guanzhong dairy goat, and the lambs were born on June 16 Guo Jitong, a doctoral student who took part in the study, said that they started the study in October 1997 The somatic cell cloned goat was transplanted from the skin cells taken from the ears of Jining Qingshan sheep and cultured to the enucleated oocytes, which were regenerated, and then implanted into another Guanzhong dairy goat Its pregnancy period was 156 days, which was similar to the traditional insemination and reproduction Pregnancy is about the same At present, the technology of somatic cell cloning has been successfully obtained in the United States, Japan, France and other countries since the birth of Dolly in the United Kingdom in 1997 At present, this is the first case in the world in terms of adult somatic cell cloning of goats Professor Zhang Yong said that "somatic cell cloning of goats" is a key project of the National Natural Science Foundation of China In order to make this technological achievement recognized in China and the world, they have invited relevant authorities of the state to identify it to verify its name China feed industry information network SPK (author:)