CINCINNATI, Oct. 27 (UPI) -- A male Indian rhino calf, conceived by artificial insemination from frozen-thawed sperm, died 13 hours after its birth at the Cincinnati Zoo, officials said.
The 117-pound calf, born Tuesday, died about 7:15 p.m., The Cincinnati Enquirer reported.
The 18-year-old mother, Nikki, had been pregnant once before after the same assisted-reproduction techniques were used but delivered a stillborn female calf, zoo officials said.
But subsequent births are often successful, and Nikki's pregnancy had progressed normally with no signs of complications, said Monica Stoops, reproductive physiologist at the zoo's Center for Conservation and Research of Endangered Wildlife.
When it was born the calf had a heartbeat but was not moving or breathing, so zoo employees did CPR until it began breathing on its own.
Zoo workers with the calf when it died were unable to resuscitate it.
The Indian rhino is listed as a vulnerable species by the International Union for Conservation of Nature.