Relatively speaking, if you factor in that roos are allowed to range free throughout their lifetime and are not subjected to long distance transport in cramped conditions. I don't consider any meat to be humane, that's why I'm vegetarian
But I can't very well inflict that on my dogs so yes, I say compared to supporting the raising and slaughtering of pigs, cows, sheep and especially chickens, I'd rather feed roo. Not exclusively, but as part of their diet the dogs seem to tolerate it no problems. If I can find free-range meat from other sources, I feed them that too.