Lleyn ewes are durable and long lived. Wintering will incur the minimum feed requirements.
Due to her being a medium sized ewe, more ewes can be kept per an acre hence increasing production numbers.
Lamb can be finished well on a grass based system. 180% - 200% lambing percentages can be seen regularly. This gives you more lambs hence more turnover.
Pure bred lambs consistently grade out at U or R, 3L in the 18 - 22kg range.