"It was surprising to see more product added to the auction given the weak start to New Zealand's milk production season," Kilsby noted.
Anhydrous milk fat gained 5.3 per cent to US$6,764 a tonne, while butter rose 1.2 per cent to US$6,026 a tonne.
Meanwhile, skim milk powder fell 1.2 per cent to US$1,920 a tonne, while cheddar declined 1.9 per cent to US$4,032 a tonne.
"Skim milk powder pricing remains weak and this is unlikely to change while there is so much stock held in Europe," according to Kilsby.
Rennet casein slid 2.4 per cent to US$6,036 a tonne, while lactose dropped 3.8 per cent to US$759 a tonne.
Butter milk powder was not offered at this event.
The New Zealand dollar last traded at 73.20 US cents at 12.24pm in New York, compared with 72.63 US cents at 5pm in Wellington the previous day.
There were 134 winning bidders out of 174 participating at the 17-round auction. The number of qualified bidders rose to 539, up from 537 at the previous auction.