From what I understand, there is a ton of grass just sitting there in New Zealand for lambs to eat so it makes little sense to grain-feed them. Even...
I readily admit I have cold hands and feet... they have been that way as long as I can remember. Since at least middle school. And have been that way...
I'd probably do 80% carbs before I'd do 80% fat for a multitude of health reasons, and people around here frequently shoot for the 70+% range of fat....