There is irony all-around here!
If a Giraffe is slaughtered in the wild by tigers, hey, no biggie, it's what animals do and it's just the cycle of life...whack 'em in a zoo and feed him to tigers...oh shyt, we can't have that?!
Hilarious.
And maybe they could have chose not to breed him, if inbreeding is a concern? Just snip 'em and keep him. Well, I guess who wants a neutered Giraffe, eh? Plus, gotta fed 'em right? Yeah, that latter part, you know what most do? They sell feed to the visitors to feed the critter, kids and even adults get a kick out of dropping food on their really long tongues!
Obviously the zoo saw a chance to save on tiger food and took it.