动物实验,基因编辑 z-bo 2020-08-28 459

　　Scientists at the University of California, Davis hope to use gene editing technology to raise hornless cattle and reduce the harm to animals such as farmers and passersby.

　　School veterinary geneticist Allison Van Ainenum (Allison Van Ainenum) participated in the annual meeting of the American Association for the Advancement of Science to help him and his colleagues use a gene editing technology called CRISPR The horns of Stan cattle grow. He said that he had deleted the DNA. Two calves born without horns are reproduced by combining in vitro fertilization and embryo transfer techniques, and the horns are covered with a layer of fluff.

　　Currently, these two cows have been quarantined.

　　Holstein cows are common black and white cows. To protect the safety of milkers and other animals, breeders cut off the horns or solder the horns with a soldering iron immediately after delivery. It not only caused great pain to the cattle, but also very troublesome. Fwan Aininham said that gene editing technology can accurately add gene mutations to livestock breeding programs, making up for the shortcomings of traditional breeding techniques.