Argentina and the united States have many similarities in terms of their dairy. In the following table we can observe some indicators related to the level of production, consumption, and the exportable surplus. This table does not include the milk imported:
We estimate that our friends in the North are a good reference valid where to look at when analyzing the economy of the markets farms. A dairy more orderly, with updated data (the USDA has information dairy closed in march 2015 while the published Minagri only complete until December 2012), a more transparent system of formation of the price of the raw material, which finally results in better conditions for the producer. If your balance exportable represents a minor proportion of the milk produced, by volume produced in the united States is the third largest exporter of dairy products. But in critical moments, you can rely on a large consumption of its internal market.
As proof of this let us look at the next bend five-year compared prices, in current dollars/liter, where it becomes clear that we share with them wakesbut unfortunately, not the holidays. If we consider that we are using the value of the dollar official we may assume that the difference could be greater. 
Transparent market, domestic consumption, strong...much to grow still.