The countries are two of the biggest suppliers of wheat for animal feed.
Costs have risen by 50% in a week, and the National Pig Association (NPA) has urged retailers to pay more for pork.
Farming Minister Victoria Prentis said: «I have already announced an immediate review of fairness in pig industry supply chains and work is under way.»
She added: «This builds on schemes we have introduced to help clear the backlog of pigs, a temporary visa scheme for pork butchers, and conversations with the major banks and retailers to ensure they are showing flexibility to pig farmers at this difficult time.»
Details in link: bbc.com