The world's first cloned cow died and survived healthy for 21 years

Source: China Youth Network

On October 9, 21-year-old cloned cow Kaga died at a research center in Japan, and he and his twin sister Noto were among the world's first cloned cattle.

The world's first cloned animal was Dolly, a lamb born in 1996. In July 1988, Kaga and Noto were born, known as the world's first cloned cattle. Not only did they live healthily, but they also successfully gave birth to calves in 2000. Noto died in May 2018. In the month before Kaga's death, it had problems with its health, had difficulty standing, and had to be injected with anti-inflammatory drugs.

Kaga and Noto were developed by the Ishikawa Research Center in Japan in collaboration with University. Using somatic nuclear transfer, the researchers bred eight embryos from the DNA of the same cow, but only Kaga and Noto survived.

It is reported that the average lifespan of cattle is 20 years. As cloned cattle, both Kaga and Noto reached an average lifespan, which was a major breakthrough in science. (Compiled and reported by China Youth Network)