Dolphenby Farm: Blending Genetics for Grazing Success In the heart of Cumbria’s Eden Valley, Dolphenby Farm is showing how the right mix of genetics and good management can drive a productive spring block calving system. With a 550-cow herd and a focus on combining Irish and New Zealand genetics, co-owner Jonny Slack is building a farm that balances performance, profitability and long-term sustainability. This is the first in a year-long series that will follow Dolphenby through the seasons, sha