Donegal Investment Group has reported higher revenues for 2015, which contributed to a marginal increase in adjusting operating profits.

The group said its revenues for the year to the end of December rose by 2.7% to €82.9m, while its adjusted operating profits increased from €0.9m to €1m. 

However, its pre-tax profits from continuing operations fell to €3.75m from €4.2m for the year.

The company said its speciality dairy brand continued to grow "to plan" in Ireland and the UK, while its animal feeds business had a "satisfactory" year with a moderate increase in volumes offset by a slightly reduced selling price. 

However, its produce seed potato business was hit by a number of factors during the year, while its Monaghan Middlebrook Mushrooms business was also impacted by the performance of a European subsidiary. 

Donegal said it was maintaining its total dividend at 16 cent per share. 

Its chairman Geoffrey Vance said that the group has - and will - continue to focus on its three key strategic areas of produce seed potato, speciality dairy and key associate investments.