On a farm near Catlewellan in County Down. Scanned a group of friesian heifers which had previously been scanned to determine which were fit and not fit for breeding. On the previous scan, there was a group of heifers identified as pre pubertal. I suggested that, these animals which were of size for breeding but were not cycling , be isolated separately. The client gave them extra space, put them in with a stock bull and gave them extra feeding. On the scan today ,9 out of 10 animals that were previously identified as being pre pubertal, were pregnant and pregnant to the heat between 3 and 6 days after the previous scan. This is evidence that removal of environmental stressors will prepare animals for enhanced fertility.