Christians take this commandment to be applicable to human beings, not to animals. There is killing, and there is murder.
Murder refers to human beings.
Killing means any kind of killing and especially animal killing. If you want to interpret these words, that is something else. We understand the direct meaning. The Vaisnava philosophy teaches that we should not even kill plants unnecessarily. We offer Krishna only the kind of food He demands, and then we eat the remnants.