Hello genius, this took place where the animals were caged and not in the wild. These animals were in the complete control of evil humans. Wake up, you are on the WRONG side of this debate.
What difference does it make how the tiger was fed? So it is ok if the human kills it first and then feeds it to the tiger? What is so special about that and what would be the preferred way of going about doing it? If it was a couple of chickens would just chop their heads off first? Shoot the donkey and the tiger gets lead poisoning from ingesting the bullet? Maybe they should have been Halal killed by just slitting the donkeys throat. Like I said, a bunch of snowflakes, maybe you should find your safe place.