美國熊貓幼崽是雌性

Smithsonian Institution officials say the two-week-old giant panda cub at its National Zoo in Washington is a female. They also revealed the cub's father is National Zoo panda Tian Tian.

The panda mother, Mei Xiang, was artificially inseminated with sperm from Tian Tian and from a San Diego Zoo panda named Gao Gao. A DNA sample was collected to determine the cub's father.

Zookeepers say the mother and cub are healthy, and the cub is starting to develop the distinctive dark markings in her fur around the eyes, ears and back.

China owns the rare pandas at the National Zoo. The cub is expected to stay at the zoo for about four years and will most likely be sent to China.

Mei Xiang's other surviving cub, a male named Tai Shan, was born in 2005 and sent to China in 2010.

The endangered pandas are well known for their difficulty in breeding and producing cubs.美國史密森學會官員說，美國首都華盛頓動物園裏的兩週大的大熊貓幼崽是雌性。而該學會同時披露這個幼崽的父親是動物園熊貓添添。

幼崽的母親美香是通過人工授精的方式，接受添添及美國聖地亞哥動物園大熊貓高高的精液而受孕。園方通過收集DNA的樣本確定了幼崽的父親。

動物園管理員表示，大熊貓幼崽和她的母親都很健康，幼崽開始在眼睛、耳朵周圍和背上長出有深色印記的特徵。

中國擁有華盛頓動物園裏的稀有熊貓。這支幼崽預計在華盛頓動物園裏待大約4年的時間，之後很可能被送回中國。

美香另一隻存活下來的的幼崽名叫泰山是在2005年出生的，並在2010年被送回中國。

瀕臨絕種的熊貓以其難以繁衍和生育幼崽而著名。