Physorg writes:
The animals’ diet consists almost entirely of bamboo, but they will eat only about 20 of the 200 or so species that grow in Georgia. What type they like also varies by the time of year. Sometimes the pandas will eat nothing but one variety for a week, then refuse to eat it anymore. (Sound familiar, parents?)
And the bamboo has to be fresh – the pandas turn up their noses at dry or wilted leaves and discolored stalks.
So the zoo relies on a bamboo hunting team to find and harvest local patches of the plant. The bamboo they collect cannot be grown with pesticides or near polluted waterways. And most important, it must be appetizing to the pandas.
Bamboo grows wild – and fast, like a weed – in many parts of the country. The Atlanta zoo could, of course, grow its own, but that would not be very practical, given the pandas’ ever-changing tastes.
“They might eat golden bamboo from Mr. Smith’s yard but they won’t eat it from Mr. Jones’ yard,” said Jan Fortune, manager of the zoo’s animal nutrition department.
The finicky black-and-white animals are native to China’s Sichuan Province. Lun Lun, the female, weighs around 250 pounds; Yang Yang, the male, is closer to 300 pounds. Each panda eats 20 to 30 pounds of bamboo a day. The leaves and stalks account for about 95 percent of their diet. (They also get soy biscuits and apples as treats.)
That means that the bamboo hunters have to haul in about 400 pounds of bamboo each week to provide enough food for the pandas and a few other zoo animals, like the elephants and gorillas, that also eat the plants.