The Convention on International Trade in Endangered Species of Wild Fauna and Flora convention has passed a resolution backing conservation of Asian big cats. It has asked China to restrict captive breeding of tigers. "We oppose any proposal to farm wild carnivores, which are easy to breed in captivity but difficult to release in the wild. Promoting farming to satiate the demands of oriental medicine would lead to laundering of wild specimens,' said Rajesh Gopal, secretary of the National Tiger Conservation Authority in India.