12 cloned cattle will be born in Shandong Province

Introduction: cloned cattle will be born in wulidun village, caocheng Town, Caoxian County, Shandong Province! This is the first batch of somatic cell nuclear transfer cloned cattle in China, which is completely reproduced by domestic technology It is a native cloned cattle in China According to the technical director of Shandong Zhongda animal embryo engineering center, which is located in wulidun village, 12 cows were pregnant with cloned "baby" It is predicted that four or five of them may be pregnant with twins At present, the 12 "cow mothers" are in good health and the "cow babies" are in normal development and will be born in succession in the near future According to researchers, it is the first time in the world to clone so many cattle in a single batch It is understood that the research project of "asexual reproduction of livestock" (i.e cloning cattle) is jointly researched by the research team led by Professor Chen Dayuan of the Institute of zoology, Chinese Academy of Sciences and the China University Animal Embryo Engineering Center The supporting technology of cattle embryo transfer series operation is completed by the technical personnel of the China University Animal Embryo Engineering Center In 2001, a cloned cow was born in Shenzhen, but it was choked to death when feeding Not long ago, Laiyang Agricultural College also produced two all black cloned cattle However, it is reported that the embryos of the cloned cattle produced in the two times are imported from New Zealand and Japan, neither of which are real domestic cloned cattle in China The experiment of Caoxian cattle cloning began in April 2001 Except for three Luxi Yellow cattle, the other 12 recipient cows were all Holstein cows bred by the center of large and medium animal embryo engineering This time, there are two prototypes of cloned cattle, one is a high-yield "Holstein" cow, the other is a "gap" beef cattle The somatic cells of the cattle were taken from the ears of No 663 "hestan" cow, Xiaowangzhuang dairy farm, Beijing Agricultural Machinery Test Station, and the somatic cells of the beef cattle were taken from the ears of No 018 "gepwei" bull, the adult beef cattle, from the embryo engineering center of China University of animal The cloned high-yield "Holstein" cows produced about 10000 kg of milk per lactation period (305 days), which was one to two times higher than that of ordinary local cows This is the breed that has reached the expected production period in these two days Another breed of "gepwei" beef cattle cloned this time is large in size, fast in growth, good in meat quality, with a slaughter rate of more than 60%, a net meat rate of more than 50%, and a high milk yield of cows (author:) share to feed Weibo share to: