An experiment comparing two self-contained grazing systems is described in which a high stocking rate of ewes (23/ha) is compared with a moderate rate (19/ha) which had an induced high lambing percentage. Yields of animal products and pasture utilization patterns are presented and demonstrate the advantage of fitting animal requirements as closely as possible to pasture production. This advantage is emphasized in winter feeding patterns. Some conclusions on management as it affects the technique of "all grass wintering" in Southland are discussed.