Fonterra needs to take the issue seriously because it needs to ensure consumption continues to grow rather than risking decline.
The briefing comes a week after Fonterra reported record sales and profit, and its biggest-ever farmer payout. In a season of superlatives, milk production and exports also hit record levels.
The company reiterated its forecast for its payout to decline in the 2012 season as global economic growth falters and Northern Hemisphere producers increase output.
Spierings said the long-term outlook for dairy product demand is bullish. Global demand is forecast to grow by 160 billion litres by 2020 while New Zealand's production is expected to grow by five billion litres.
Long term, demand is definitely outpacing supply, he said. "If short-term there a deep recession, the second in three to four years, that could have a impact like it did in 2009. You could see commodity prices coming down for a short while."
Europe's debt crisis could have been avoided "with the right measures" though the many voices and viewpoints in the region have hampered the process, he said.
Fonterra was "so big, so important" that it is intertwined with New Zealand economy in the same way as Nokia was to Finland and Nestle to Switzerland, he said. "It brings a responsibility with it."