
01-01-2008
Quote:
Originally Posted by snowleopard
Breeding success usually (but naturally not 100% of the time) comes down to space issues. The San Diego Wild Animal Park has had amazing breeding success with many species of antelope, rhino, etc. It has only been in existence since 1972 and blows the majority of zoos in the world out of the water in terms of breeding.
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Dear me that's a bold statement and a half. There are quite a few things to consider when saying things like this... First of all, i allready mentioned before that say, 1 female white rhino in 5 has calves. That would mean, that statistically every zoo with at least 5 females will be "succesfull in breeding them" and only 1 out of 5 city zoo's (with 1.1) would be succesfull. As far as i can tell, the dutch safariparks that house a large herd do not do very much better then 5 random city-zoos put together, since some city zoo's also breed.
Then, San Diego WAP could have started with a large young herd, and a few do well. They can then "dump" the non-breeding females at other parks, and keep the young females born there and breed with them again. This would skew the statistical numbers, since "city-zoos" could end up with non-breeders. The San Diego society is also one of the richest zoo's in the world, so comparing them to a smaller, private-funded zoo is also not very fair.
As for ungulates, as far as i know the WAP does not do a lot better with say 50 females then 5 city-zoos put together with groups of 10 females. I'd say the city-zoo option would even be preferable since they can keep 5 males and so keep the genetic diversity higher then a safari-park.
Then there's breeding vs animal wellfare. You can't even remotely generalise on this, since there are so many species that you can count out of this idea. Most ungulates and felines do well regardless where you put them, and raise their young fine. A gorilla that does not raise her youngster well can be in the greatest exhibit ever, but just never learned how to.
So I would like to get examples of animal parks (and species) that produce a higher baby/females ratio then city zoo's because else you don't really have a point. You can't just point at the rhino's because San Diego could be getting in a lot of potential breeders and dumping all non-breeders and so mess up the numbers. Your point has to be strong enough to withstand some criticism...
The only animals I would see that profit from a safari-park situation are animals that are really skittish and prone to stress like Gerenuk or Douc langurs and animals that have proven to breed better in large herds/flocks like flamingo's and pelicans.
Just my 2 cents...
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