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Reproduction


      

 

        Initially the primary method of  breeding giant pandas in captivity  was by artificial insemination, as  they  seemed to lose their interest  in mating once they were                 captured.The current reproductive  rate is considered one young every  two years.

 

 

 

       Giant pandas reach sexual  maturity between the ages of four  and eight, and may be reproductive  until age 20. The mating season is  between March and May, when a  female goes into her estrous  cycle which lasts for two or three  days and only occurs once a  year.The gestation period ranges  from 95 to 160 days.Cubs weigh  only 90 to 130 grams (3.2 to   4.6 ounces), which is about 1/800 of the mother's weight.

 

       If twins are born, usually only one survives in the wild. The mother will select the stronger of the cubs, and the weaker will die. It is thought that the mother cannot produce enough milk for two cubs since she does not store fat.The father has no part in helping raise the cub.