Again, these are only guidelines, and thin animals that have short fleece in cold conditions may need more energy. Common sense is important when feeding sheep, especially in late gestation. Energy is especially important during late gestation as it affects lamb size and vigor at birth. Lack of energy results in small, weak lambs that are more prone to create problems for the shepherd and many of these are at increased risk for mortality. Fresh water and mineral are also crucial.
Lactation is a very demanding period for ewes.
Thus, if ewes are to milk well, they need a high quantity of feed, that is high in energy, protein, minerals and vitamins. Unlimited access to water is also important. Ewes that are suckling more than one lamb will produce more milk because of the lambs nursing stimuli. So, ewes with twins need more feed, and of a higher quality than ewes with singles. If at all possible, ewes should be separated based upon number of lambs suckled and fed accordingly.