We have always fed our flock on Carr's 'Tup&Lamb' coarse mix when they need a supplement in the winter, until they changed it and it's now called 'Champion Tup'. There is also a ewe coarse mix but of course tups and all male sheep including wethers, can't have that. Because we keep primitives they don't need a high protein level in any feed they get, and I don't really know what the situation would be for bigger more commercial sheep with males in the flock. Normally ewes would need 16% or 18% protein in their winter feed, which would be far too much for our little sheep anyway, but the highprotein ewe feeds are unsuitable for males.
Our tups are only in with the ewes for 4 weeks in November and they don't get any extra feeding then anyway, unless we have a heavy snowfall. The only time males are in with females and they are being fed supplements is in the first few weeks after lambing if the weather is bad, when the male lambs will be nibbling some feed.