Female Panda You You

China announced the successful of panda baby birth which is resulted from artificial insemination using frozen sperm.  This is the new opportunities for animals that are difficult to breed.  The announcement on Friday, July 24 2009, revealed that female panda only has three-day fertile period, the period can be fertilized.  This is a reason why panda nearly extinct.  Female panda You You ( called ‘yo yo’ ) birth a baby panda on Thursday, July 23 2009 at Wolong Giant Panda Research Center in Southwestern Sichuan.  This is the third child of Yo Yo and the 10th baby panda that is born at Wolong for this year.

Panda researchers believe that this is the first successful birth from frozen sperm.  This technique has been tried in some countries but failed.  The Sperm derived from male panda, Lolo, and his sperm has been frozen for several years.  Artificial Insemination commonly is used in panda reproduction because the panda’s estrus (libidinous) is very low.   In 2006, as many as 34 panda in China were born by artificial insemination and 30 of them grow up to adulthood.  Similar technique was done in a zoo in US.

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