The 7.9 magnitude quake killed five staff at the Wolong Nature Reserve and seriously damaged all of its panda houses, official news agency Xinhua said.

"The first batch of bamboo, apples, and veterinary medicine for the pandas, as well as food and the tents urgently needed by the staff, arrived at the Wolong Reserve on Saturday night," a State Forestry Administration spokesman was quoted as saying.

Aftershocks are still rattling Sichuan province six days after the main quake, which killed at least 32,000 people and injured a further 220,000.

Sixty giant pandas raised at the Wolong sanctuary, nestled high in a valley four hours west of the provincial capital of Chengdu, were safe. Among those were Tuan Tuan and Yuan Yuan, the panda duo offered by China as a goodwill gesture to Taiwan to push its unification goal.

The government had not yet established the safety of the 1,590 pandas living in the wild in Sichuan, Shaanxi and Gansu provinces, Xinhua said.

The giant panda is one of the world's most endangered species and is found only in China. It has become an international wildlife symbol and an icon for the Olympic Games to be held in Beijing in August.