I suppose we have very differing opinions on that matter, then.
Personally to me, I feel that zoos are made pretty much for all children to enjoy. Parents will bring up children in different ways, and surely you and I would have very different values in raising children, but I feel that both should be able to enjoy the zoo.
Certainly at the zoos I went to growing up, they only publicly fed animals unrecognizable hunks of meat and if you were watching something like Nat Geo you knew what was coming...I just wouldn't at all expect to see something like a horse head being fed at a zoo.
At least for me, when I was little, horses were always something entirely different from any other animal, and nothing anybody could have told me would have changed my mind on that.
But regardless, I am vegan and would likely raise my children with those same values unless they decided otherwise. They would likely be uncomfortable seeing any animal's heads fed at zoos. Things are a lot different when you're a kid. At least it was that way for me. Obviously now I understand animals' need to eat other animals, but when I was a kid even if I understood it I didn't want to see it, at least not like that. A head is just a bit extreme.
Even if y'all disagree, the thing that you do need to accept is that obviously some of us do feel that way, and something public like a zoo should pay attention to that.