A specialist sale of in-calf heifers met a firm demand from bidders at Swatragh Livestock Mart in Co Derry on Thursday evening.A batch of 25 in-calf heifers belonging to the Northern Counties Co-op sold to an average price of £1,486. All heifers were scanned in calf to the Limousin bull and most were Limousin crosses, with a few Blonde d'Aquitaine registered heifers on offer too.