This year's Lismullin farming conference had a Brexit theme, with sector impacts provided by Aurivo's chief executive Aaron Forde on dairy, Irish Farmers Journal markets specialist Phelim O’Neill on beef and sheep and Professor Jimmy Burke from UCD on tillage.The dairy sector has a reasonably wide spread of markets and is therefore less exposed to the UK, which is responsible for just 23% of its sales. However, the border will present difficulties for the many companies who source milk either side of the border.