Dairy prices have fallen to their lowest level in more than two months in the latest global auction overnight.
The average price was down 0.6 percent to $US3477 a tonne.
It was the fourth consecutive fall in prices.
The price of whole milk powder, a key factor in setting returns to local farmers, was up 1.6 percent at $US3278 a tonne.
The volumes sold were down more than 7 percent.