1. Teagasc, Animal & Grassland Research and Innovation Centre, Moorepark, Fermoy, P61 P302, Co. Cork, Ireland.
2. Department of Biological Sciences, Munster Technological University, Bishopstown Campus, T12 P928, Co. Cork, Ireland.
3. Irish Cattle Breeding Federation, Highfield House, Shinagh, Bandon, P72 X050, Co. Cork, Ireland.