Your number one priority in a Tiger Park is... to maintain the tiger population. How the fuck do you let 24 tigers die in 36 months? Am I the only one that thinks that maybe after the first 12 months someone should have said, "wait a minute, we've got less tigers now than 12 months ago" and tried to figure out what the fuck was going wrong? How the fuck do you not notice anything is wrong in three years? Surely 24 tigers did not die in the past few months, right?
Go RTFA: "warning bells were sounded regularly for the last eight years", so they did notice, but couldn't come up with the reason for the decline.