Avian influenza has been found in another commercial poultry unit in Northern Ireland.
It follows the detection of the disease in a unit located near Clough, Co Antrim, on Saturday.
According to Ulster Farmers’ Union president Victor Chesnutt, the second case was confirmed on a farm located between Lisburn and Moira on Tuesday evening.
Initial diagnostic tests by Agri Food and Biosciences Institute (AFBI) found that avian influenza was present on both units.
Further tests by the National Reference Laboratory have been conducted to determine the strain of the disease on the farms.
The results from the first unit in Clough are expected on Wednesday.
The H5N8 strain of bird flu has been detected in wild birds across Northern Ireland in recent weeks.