The pig, Xena, who was nine years and eight months at the time of her death, was the oldest cloned pig in the world. She was born on July 2, 2000, as the world’s second cloned pig after the first one created in Britain. Xena was created by directly injecting genetic material into an egg stripped of its own genome and transplanting the egg into a surrogate mother.
http://www.japantoday.com/category/national/view/1st-cloned-pig-in-japan-euthanized