I usually apportion one small bale a day to 10 ewes, slightly less if they are lambs and slightly more if rams. Mine do tend to turn their noses up at it at first, but they soon come round. I also provide a mineral lick and a small amount of nuts each morning (mine are spoilt too!). My opinion is that when its seriously cold, like it is now, they need plenty to keep them warm. Flock losses during the winter will be minimised as a result. I get annoyed at some local farmers complaining about losing more than a handful of their flock during winter months when they can't be bothered to feed them properly. Some leave their sheep for days with snow on the ground without feeding them, one the basis (allegedly) that they can go three days without being fed!!!! Can't do them any good though, and I wonder whether they would feel them same way if it were them (well that's my rant over for the day!). Plenty of water too - mine go through gallons when being fed dry stuff, nearly as much as the lactating ewes in the spring. Cheers.