Nearly 99% of meat comes from factory farms. So your post was misleading because you acted as if the person you were replying to was wrong and you didn't acknowledge that he was talking about factory farms, where the overwhelming MAJORITY of farmed animals are.
Secondly, even in the tiny percent that you are trying to use as an example, there are still cruel practices that take place, and they still end up with their throats slit, which in my view is cruel in and of itself. Not because of the process that takes place, but just the fact that their life is being taken when it is completely unnecessary. In the same way it would be cruel to take your dog's life in order to eat his flesh, it's no different. The only difference is that you've been deeply conditioned to accept one as normal and the other as not.