Unfortunately zoos all over the world generate surplus animals. What they don’t do is kill healthy 18 month old giraffes, like Marius at the Copenhagen zoo (http://www.euronews.com/2014/02/10/slaughter-of-marius-the-copenhagen-giraffe-prompts-online-outrage/).
Organisations such as the Association of Zoos and Aquariums in North America and the Zoo and Aquarium Association in Australasia develop studbooks for their species to regulate breeding to maximise genetic diversity. If an animal’s genes become over represented in the zoo population that animal can be contracepted. There is nothing unique about giraffes. They can be castrated like any other animal or animals can be separated to avoid inappropriate pairings. The issue with Marius really started over two years ago. If his genes were over represented why were his parents allowed to breed, and why wait until the giraffe is 18 months old before euthanasing him?
Zoos are too small to be treated individually. Instead they form part of a global collective that constantly moves animals around to maximise breeding effectiveness. Zoos regularly release lists of animals that they want and that they have on surplus. The zoos I have worked for frequently move their surplus animals to other zoos that want them. I do not understand why this could not have been done with Marius as a British zoo made a place available to him.
Many animals become surplus because of their advancing years. The other members of the group kick them out or they are no longer reproductively viable and so are removed to live out the rest of their years in isolation off display. In the wild they would be killed by predators. The zoos I have worked for no longer have a policy of management euthanasia, unless animal welfare is at stake. This does, however, raise a difficult point when it comes to herd animals. Is it better to keep them in social isolation for the rest of their lives, or is it better to euthanase them?
This was hardly the case with Marius and a more enlightened solution to the “problem” caused by a young healthy giraffe could surely have been found.
Dr. F. Bunny