A new-born panda cub, shown in the BBC Two documentary Natural World Special: Panda Makers Photo: BBC
A conservation project in China has produced 136 panda cubs, with the help of some imaginative but controversial techniques.
Natural World Special: Panda Makers, a BBC Two documentary narrated by Sir David Attenborough, reveals how the Chengdu Research Base is attempting to breed a stable population of 300 bears in captivity and then set them free.
Just 50 years ago, it was thought to be impossible to breed a panda in captivity, but since then pioneering methods have yielded some success.
It is an uphill struggle, though: female pandas are in heat for less than 72 hours a year, and even the use of the drug Viagra and "panda porn" – videos of other pandas mating – doesn't always achieve the desired effect. The documentary, which airs this evening at 8.00pm, follows a futile attempt to persuade a male and young female to mate: subsequently, vets performed an artificial insemination.
Sir David described the Chinese centre – the most costly panda conservation effort ever mounted – as "a man-made solution to a man-made problem, an insurance policy against extinction." Providing pandas with a diet of fresh bamboo alone is a something of a sisyphean task: each adult devours 40lbs a day.
The programme also captures the birth of twin panda cubs. New-born pandas are blind, hairless and noisy – but soon become fluffy, robust and incredibly cute.
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