Abstract
Recent studies at this centre (Flanagan 2003, Keady et al. 2006) have shown that grazing swards in the winter (extended grazing), either in mid, late or throughout pregnancy, provides a low-cost system for wintering ewes. With decoupling of subsidy from production post Mid Term Review of the Common Agricultural Policy it is essential to improve efficiency and reduce costs of production. One of the major costs in sheep production is the cost of rearing replacements. The aim of the present study was to evaluate the effect of herbage allowance and concentrate supplementation on animal performance during extended grazing and on compensatory growth during the subsequent grazing season. Furthermore the potential herbage allowance sparing effect of concentrate supplementation was also determined.
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