China's first cloned cow born in Shenzhen

Introduction: China's first cloned cow was born in the transgenic animal breeding base of Shenzhen lvpeng company Unfortunately, the breeder accidentally choked the milk into the calf's trachea when feeding, which resulted in the calf's death one hour and twenty minutes after birth The birth of the cloned cow is one of the important achievements in the project of "animal mammary gland bioreactor research" of China's "863" program Through the joint efforts of the research team led by Professor Chen Yongfu of China Agricultural University and Shenzhen lvpeng company, the project has successfully developed the expression of exogenous genes in breast According to Professor Chen Yongfu, somatic cell cloning technology has great application potential and commercial prospects in expanding excellent animal individuals, improving animal transgenic efficiency, reducing product costs and shortening the industrialization process For this reason, the research group began to concentrate on the technical system of producing transgenic animals through somatic cell cloning last year, reconstructed 1300 cloned embryos, cryopreserved and transplanted 280 embryos, and established six pregnancies, two of which were sheep and two cows that were in the stage of delivery The newly born cloned cow is one of them In spite of the accident, the calf died, but the birth of the cloned calf proved that the technology was successful It is reported that China Agricultural University and Shenzhen lvpeng company will carry out the second batch of cloned cattle breeding.