Enormous genetic gains have been reported on a Perthshire hill farm since the leap was taken to performance record its Scottish Blackface flock. The pure flock at Wester Tullich, Aberfeldy, were well below the breed’s genetic average back in 1999, but by selecting stock on growth traits, maternal ability and high-index figures Ian Duncan Millar and shepherd Mark Armstrong have seen the farm’s best progeny rise to the top 1% of the breed. After only four years in Signet’s scheme, the […]