“…Some studies have focused on production cost measures of competitiveness (Vink et al, 1998;Blignaut, 1999;Tauer, 2001), whilst others have used profitability measures such as gross margin per litre (Hopps & Maher, 2007), return on assets (ROA) (Gloy et al, 2002) and net farm income (NFI) (El-Osta & Johnson, 1998;Short, 2000). Previous research found a strong link between farm size (total number of cows), milking rate (production per cow) and dairy farm profitability (El-Osta & Johnson, 1998;Short, 2000;Gloy et al, 2002). Other factors that significantly affected dairy enterprise profitability were forage and feed costs per cow (El-Osta & Johnson, 1998), milkings per day and debt-to-asset ratio (DA) (Gloy et al, 2002;Short, 2000), and specialisation in milk production (El-Osta & Morehart, 2000;Short, 2000).…”