According to a report in the Yedioth Ahronoth newspaper, vets were asked to treat an adult, female giraffe at Israel's largest zoo, the Safari Park in Ramat Gan.

The team, led by Professor Zohar Amar, took a routine sample of milk and found that it clotted in the way required by Jewish law for kosher certification.

They submitted more milk for verification by the rabbinical authorities and the paper reported that a ruling was made that giraffe meat and milk are acceptable for observant Jews.

The giraffe belongs to the family of grazing animals that have cloven hooves and chew the cud, thereby making them consistent with kosher rules, but the milk test was the final confirmation.

"Indeed, the giraffe is kosher for eating," Rabbi Shlomo Mahfoud, who accompanied the researchers in their work, said.

"The giraffe has all the signs of a ritually pure animal, and the milk that forms curds strengthened that."

But Dr Yigal Horowitz, the zoo's chief vet, said this did not mean there would suddenly be a surge in demand of giraffe food products in Israel.

"This does not mean that tomorrow we are going to drink giraffe milk or eat soup made from giraffe necks," he said.

"After all, this is an animal in danger of extinction."