Ollie ferrets need meat protein there digestive tract is short that means any food they eat has to be of the higest quality because it passes through them so quickly, so feeding bread, milk & sugar & an egg will not give them enough in the way of nutrients , this is why they need meat protein & fat
If you intend to breed i would seriously think hard as i suspect you will feed this mixture to any kits you have, its asking for trouble, all you will end up with is hungry kits & to be honest i dont think your clued up enough to be embarking on any kind of breeding programme if