The world wants more quality animal protein. As a result of population growth and the dietary switch to animal proteins in emerging economies, demand for dairy products is growing faster than the output from farms. It is estimated that by 2050 the one hectare of farmland that supported one person in the mid 1980s will be required to feed 1.8 people[1]. It is uncertain whether the global supply of suitable farmland and productivity improvements will satisfy this increased demand for food.
New Zealand grass based dairy farming systems are sustainable, low cost and very productive. This is in contrast to 90% of the world where cows are confined and are fed grain-based and other high cost rations. This is borne out by the current milk price to feed cost ratio - on a typical New Zealand dairy farm this ratio is 3.7 times[2] versus 1.9 times[3] in US dairy confinement systems. This trend won’t change soon as crops are also in demand to feed a growing human population and for biofuels production.
Pastoral dairy farms are and have been very profitable: In the 10 years to 2010, New Zealand dairy farms made an average pre-tax rate of return of 11.8%[4] p.a. On average, 37% of this annual return came from operating profits, and the other 63% came from land appreciation. The capital appreciation in pastoral dairy farmland relates to increases in both productivity and milk prices. Over the 15 years to 2010, on average per hectare milk production increased 44%, milk prices increased 87%, pre-tax operating profit per hectare grew by 339% and land grew in value by 119%[5].
The dairy industry is one of New Zealand’s business success stories - The NZ dairy industry is an integral part of the NZ economy, producing more than $NZ11.3billion of exports or 25% of NZ’s merchandise trade. The wholly farmer owned dairy cooperative, Fonterra is New Zealand’s biggest company and the world’s leading exporter of dairy products. Fonterra suppliers represent just 3% of the world milk supply, but nearly 35% of internationally traded dairy products. In its recently announced 2011 financial results, Fonterra noted an increase in their after-tax profit to $771 million and a 19 percent increase in revenue to $19.9 billion.
Dairy farm investments are different from other asset classes; farmland and dairy outputs are tangible, in increasing demand globally, and essential to life. Dairy farm investments can enhance investment portfolios; over the past 10 years, returns from farmland internationally (operating profit and capital appreciation), have generally been superior to and only weakly correlated with returns from shares and bonds. Farmland is a good hedge against inflation.

[1]Source UNFAO, UNDP.
[2]Calculated using a milk price of $6.75/kgMS and an average feed input cost of 16 cents/kg DM
[3]http://future.aae.wisc.edu/data/monthly_values/by_area/2058
[4]Derived from Dairy NZ Economic Surveys. DairyNZ is the industry good organisation, representing New Zealand's dairy farmers.
[5]2009/10 NZ Dairy Industry Statistics and DairyNZ Economic Farm Survey 2009/10.
[6]FAPRI (Food and Agricultural Policy Research Institute) a, research program between Iowa State University and the University of Missouri-Columbia, that provides projections on international commodity markets