Updated

Giant panda Xin Xin will be artificially inseminated next year in hopes of adding to the panda family at the Mexican capital's Chapultepec Zoo.

Mexico City Environment Secretary Martha Delgado announced Thursday that two Chinese experts on panda reproduction will arrive in the coming days. The 22-year-old female panda is expected to be inseminated next April.

Pandas are notoriously difficult to breed in captivity. Females are in heat for only a few days a year and male pandas often fail to respond.

No baby panda has been produced at the Chapultepec zoo since Xin Xin was born in 1990.

Xin Xin, whose name means Hope, is the third generation born from a pair of pandas given to Mexico by China in 1975 as a symbol of friendship between the countries.