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Cow Cloned from Infertile Donor Gives Birth to Healthy Calf
A cow cloned from cells of a cow that was no longer fertile has given birth to a healthy 45-kilogram (99 pound) calf, a professor at the University of Connecticut said Tuesday.
Cloned cows have calved successfully before, but this is the first time the donor animal was infertile, according to Xiangzhong Yang, director of the university's Transgenic Animal Facility in Storrs, Connecticut.
"Daisy gave birth without any assistance" on Sunday, Yang said in a statement. The calf has been named Norm, and both cow and calf are doing fine.
Daisy was born in July 1999, cloned from cells of a 13-year-old cow.
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