Outspoken for 7 January 2014: Dairy Farming

Senior rurals reporter Kevin Ikin discusses the sustainability of dairy farming with Ian Mackenzie, a mid-Canterbury cropping and dairy farmer and Federated Farmers' water and environment spokesperson; Alison Dewes, a fourth generation farmer and vet, who also runs an agribusiness consultancy, Headlands; and Hamish Gow, a professor of Agribusiness at Massey University.