On the basis of unpublished farm income data available from the 1991 Teagasc national farm survey, the percentage contribution of livestock headage payments, including sheep headage payments and ewe premia, in disadvantaged areas to family income in 1991 in the "Teagasc West Region", which largely corresponds to the disadvantaged areas, was 40 per cent. Comparable data for 1977 are not available. However, on the basis of tentative estimates based on departmental data and average farm income levels for 1977 derived from the Teagasc farm management survey, livestock headage payments contributed approximately 10 per cent to family farm income in 1977.